[{"id":764,"date":"2018-02-06T23:27:07","date_gmt":"2018-02-06T14:27:07","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=764"},"modified":"2018-02-25T14:20:49","modified_gmt":"2018-02-25T05:20:49","slug":"year-2038-countdown-clock","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/year-2038-countdown-clock\/","title":{"rendered":"Year 2038 countdown clock"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p><iframe loading=\"lazy\" title=\"7segment LED x 10 display clock\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/E-os8XCysBw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-0\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-0\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-0\" data-slide-to=\"1\"><\/li><li class=\"\" data-target=\"#custom-carousel-0\" data-slide-to=\"2\"><\/li><li class=\"\" data-target=\"#custom-carousel-0\" data-slide-to=\"3\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-1024x768.jpg\" alt=\"\" width=\"640\" height=\"480\" class=\" size-large wp-image-770\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-1024x768.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-300x225.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-768x576.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-640x480.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1406-48x36.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-1024x768.jpg\" alt=\"\" width=\"640\" height=\"480\" class=\" size-large wp-image-771\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-1024x768.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-300x225.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-768x576.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-640x480.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1506-3-48x36.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-1024x768.jpg\" alt=\"\" width=\"640\" height=\"480\" class=\" size-large wp-image-772\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-1024x768.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-300x225.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-768x576.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-640x480.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1505-48x36.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-1024x768.jpg\" alt=\"\" width=\"640\" height=\"480\" class=\" size-large wp-image-773\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-1024x768.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-300x225.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-768x576.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-640x480.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/IMG_1507-48x36.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-0\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-0\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<p>The Year 2038 problem is a problem in which time values are stored as<br \/>\na signed 32-bit integer, and this number is interpreted as the number<br \/>\nof seconds since 00:00:00 UTC on 1 January 1970.  In such<br \/>\nimplementation, after 2038-01-19 03:14:07(UTC), the variable will<br \/>\noverflow and may cause system failure.<br \/>\nFor more, see <a href=\"https:\/\/en.wikipedia.org\/wiki\/Year_2038_problem\">wikipedia<\/a>.<\/p>\n<p>This device counts down the time to the moment that the year 2038<br \/>\noccurs. It continuously calibrates the internal RTC by accessing an<br \/>\nntp server.<\/p>\n<p>In this device, the year 2038 problem <em>do<\/em> take place.<\/p>\n<pre><code class=\"cpp\">      if (dispmode == MODE_UNIXTIME) {\n        dispDigits(now.unixtime()-SECONDS_UTC_TO_JST);\n      } else if (dispmode == MODE_COUNTDOWN) {\n        dispDigits((0x7FFFFFFF - (now.unixtime()-SECONDS_UTC_TO_JST))); \/\/ y 2038!\n      } else if (dispmode == MODE_CLOCK) {\n        dispClock(now);\n      } else if (dispmode == MODE_DATE) {\n        dispDate(now);\n      }\n<\/code><\/pre>\n<p><iframe loading=\"lazy\" title=\"7segment LED x 10 display clock (Demo the year 2038 problem) Failed ver.\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/hJBHb5ON73I?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Just casting values in <code>dispDigits()<\/code> by <code>(int32_t)<\/code> makes things fine.<\/p>\n<p><iframe loading=\"lazy\" title=\"7segment LED x 10 display clock (Demo the year 2038 problem)\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/Mgxpzdlathw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2>Materials<\/h2>\n<ul>\n<li>Micro controller: ESP-WROOM-02<\/li>\n<li>LED driver IC: HT16K33<\/li>\n<li>7 segment LED x 4: OSL40562-IB x 2 (anode common)<\/li>\n<li>7 segment LED x 1: OSL10561-IB x 2 (anode common)<\/li>\n<li>RTC: DS1307<\/li>\n<li>32kHz Crystal<\/li>\n<li>push switch (vertical)<\/li>\n<li>CR2032 battery holder<\/li>\n<li>PCA9306 I2C level converter<\/li>\n<li>Original PCB<\/li>\n<\/ul>\n<h2>Hardware<\/h2>\n<p>To say simply, this is a 10-digits 7-segment LED display with WiFi<br \/>\nconnection.<\/p>\n<h2>Software<\/h2>\n<p>I used Adafruit HT16K33 Arduino library (<code>Adafruit_LEDBackpack<\/code>) for<br \/>\ndriving 7 segment LEDs. However, this driver is written for<br \/>\ncathode-common LEDs. So I inherit the <code>Adafruit_LEDBackPack<\/code> class and<br \/>\nmodified display method for anode common LEDs (<code>Anodecommon_7seg<\/code>).<\/p>\n<p>The clock is always calibrated by ntp service and RTC with battery<br \/>\nstores time even if the power is not supplied.<\/p>\n<h3>API<\/h3>\n<p>This device provides HTTP service and REST API.<\/p>\n<table>\n<thead>\n<tr>\n<th>API<\/th>\n<th>parameter<\/th>\n<th>value<\/th>\n<th>effect<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>mode<\/td>\n<td>value<\/td>\n<td>int<\/td>\n<td>change mode<\/td>\n<\/tr>\n<tr>\n<td>status<\/td>\n<td>&#8212;<\/td>\n<td>&#8212;<\/td>\n<td>show status<\/td>\n<\/tr>\n<tr>\n<td>config<\/td>\n<td>timezone<\/td>\n<td>string<\/td>\n<td>change local timezone<\/td>\n<\/tr>\n<tr>\n<td>countdown<\/td>\n<td>date<\/td>\n<td>string<\/td>\n<td>set user-specified countdown timer<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>time<\/td>\n<td>string<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>timezone<\/td>\n<td>string<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre><code>$ curl http:\/\/esp_7seg.local\/status\n{\"unixtime\":1517957705,\"countdown\":629525942,\"mode\":0}\n\n$ curl \"http:\/\/esp_7seg.local\/mode?value=2\"\n{\"mode\":2}\n<\/code><\/pre>\n<h3>Web Interface<\/h3>\n<p>By accessing assigned URL (default: http:\/\/cc2038.local\/ ), you can use user-specified countdown feature easily.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-1024x705.png\" alt=\"\" width=\"640\" height=\"441\" class=\"alignnone size-large wp-image-789\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-1024x705.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-300x207.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-768x529.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-640x441.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2018\/02\/Screen-Shot-2018-02-11-at-21.50.34-48x33.png 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2>GitHub<\/h2>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/y2038_countdown.git#secret=660d11e931f8d\" title=\"GitHub - omzn\/y2038_countdown: A countdown clock for the year 2038 problem\" data-secret=\"660d11e931f8d\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>The Year 2038 problem is a problem in which time values are stored as a signed 32-bit integer, and this number is interpreted as the number of seconds since 00:00:00 UTC on 1 January 1970. In such implementation, after 2038-01-19 03:14:07(UTC), the variable will overflow and may cause system failure. For more, see wikipedia. This device counts down the time to the moment that the year 2038 occurs. It continuously calibrates the internal RTC by accessing an ntp server. In this device, the year 2038 problem do take place. if (dispmode == MODE_UNIXTIME) { dispDigits(now.unixtime()-SECONDS_UTC_TO_JST); } else if (dispmode == MODE_COUNTDOWN) { dispDigits((0x7FFFFFFF &#8211; (now.unixtime()-SECONDS_UTC_TO_JST))); \/\/ y 2038! } else &#8230;<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":766,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-764","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=764"}],"version-history":[{"count":17,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/764\/revisions"}],"predecessor-version":[{"id":793,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/764\/revisions\/793"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/766"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=764"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=764"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":754,"date":"2017-12-01T12:35:08","date_gmt":"2017-12-01T03:35:08","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=754"},"modified":"2017-12-01T12:35:08","modified_gmt":"2017-12-01T03:35:08","slug":"gesture-presentor-ble","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/gesture-presentor-ble\/","title":{"rendered":"Aquatan gesture presenter BLE"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>A new BLE version of <a href=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/gesture-presentor\/\">Gesture presentor<\/a>. Now it&#8217;s wireless and with a rechargeable battery.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-1\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-1\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-1\" data-slide-to=\"1\"><\/li><li class=\"\" data-target=\"#custom-carousel-1\" data-slide-to=\"2\"><\/li><li class=\"\" data-target=\"#custom-carousel-1\" data-slide-to=\"3\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-755\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_1008-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-756\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0994-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-757\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0968-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-758\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/IMG_0960-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-1\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-1\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<h2>Materials<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.adafruit.com\/product\/2829\">Adafruit Feather 32u4 Bluefruit LE<\/a><\/li>\n<li><a href=\"http:\/\/ssci.to\/2085\">SparkFun gesture sensor<\/a><\/li>\n<\/ul>\n<h2>Wiring<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\"alignnone size-large wp-image-759\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/12\/aquatan_ble.png 1326w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2>Code<\/h2>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/gesture_presenter_ble#secret=660dc94903cdd\" title=\"GitHub - omzn\/gesture_presenter_ble: A gesture presenter device\" data-secret=\"660dc94903cdd\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>A new BLE version of Gesture presentor. Now it&#8217;s wireless and with a rechargeable battery. Materials Adafruit Feather 32u4 Bluefruit LE SparkFun gesture sensor Wiring Code<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":755,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-754","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=754"}],"version-history":[{"count":0,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/754\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/755"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=754"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=754"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":743,"date":"2017-11-19T19:56:23","date_gmt":"2017-11-19T10:56:23","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=743"},"modified":"2017-11-19T20:23:07","modified_gmt":"2017-11-19T11:23:07","slug":"smart-lighting","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/smart-lighting\/","title":{"rendered":"Aqua-tan Smart Lighting"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>A device to manage LED lights in an aquarium.<\/p>\n<h2>Smart lighting<\/h2>\n<p>The smart lighting enables to turn on and off the LED lights in an aquarium. It also supports dimming. For example, the light can dim slowly by the specified duration (e.g. 1 hour).<br \/>\nAs was implemented in the smart cooler and feeder\uff0cESP-WROOM-02 has a Web interface and Web APIs. By the Web APIs, we can turn on and off the lights from a remote site.<\/p>\n<p>For the hardware, we have the controller board and LED board connected to 3-wires cable. The controller board has ESP-WROOM-02 and 7 segment display. The LED board has 4 LED drivers with 300mA, and 12V COB LEDs are connected. The LED board can be connected as the daisy-chain.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-2\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-2\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-2\" data-slide-to=\"1\"><\/li><li class=\"\" data-target=\"#custom-carousel-2\" data-slide-to=\"2\"><\/li><li class=\"\" data-target=\"#custom-carousel-2\" data-slide-to=\"3\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-746\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0941-e1511073360117-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-747\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0942-e1511073324255-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-745\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0940-e1511073397436-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-1017x1024.jpg\" alt=\"\" width=\"640\" height=\"644\" class=\" size-large wp-image-744\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-1017x1024.jpg 1017w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-298x300.jpg 298w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-768x773.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-640x644.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-300x302.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0939-e1511073432555-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-2\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-2\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<h2>Materials<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.switch-science.com\/catalog\/2500\/\">ESPr developer<\/a><\/li>\n<li>DC-DC converter (12V -> 5V 500mA)<\/li>\n<li>MOSFET (2SK4017)<\/li>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/11629\">SparkFun 7-Segment Serial Display &#8211; White<\/a><\/li>\n<li>COB LEDs (12V 300mA)<\/li>\n<li><a href=\"http:\/\/akizukidenshi.com\/catalog\/g\/gI-10431\/\">LED driver: NJW4616U2<\/a><\/li>\n<\/ul>\n<h2>Wiring<\/h2>\n<h3>Controller<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\"alignnone size-large wp-image-751\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire-1.png 1168w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h3>LED board<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\"alignnone size-large wp-image-752\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/wire_led-1.png 1458w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2>Code<\/h2>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/smart_lighting#secret=660dc94a3089f\" title=\"GitHub - omzn\/smart_lighting: Aqua-tan smart lighting: An ESP based smart aquarium project\" data-secret=\"660dc94a3089f\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>A device to manage LED lights in an aquarium. Smart lighting The smart lighting enables to turn on and off the LED lights in an aquarium. It also supports dimming. For example, the light can dim slowly by the specified duration (e.g. 1 hour). As was implemented in the smart cooler and feeder\uff0cESP-WROOM-02 has a Web interface and Web APIs. By the Web APIs, we can turn on and off the lights from a remote site. For the hardware, we have the controller board and LED board connected to 3-wires cable. The controller board has ESP-WROOM-02 and 7 segment display. The LED board has 4 LED drivers with 300mA, and &#8230;<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":747,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-743","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=743"}],"version-history":[{"count":1,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/743\/revisions"}],"predecessor-version":[{"id":750,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/743\/revisions\/750"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/747"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=743"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=743"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":741,"date":"2017-11-19T13:31:42","date_gmt":"2017-11-19T04:31:42","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=741"},"modified":"2017-11-19T13:37:31","modified_gmt":"2017-11-19T04:37:31","slug":"aquatansmartfeeder","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/aquatansmartfeeder\/","title":{"rendered":"Aqua-tan Smart Feeder"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>A device to feed fish at the specified time.<\/p>\n<h2>Smart feeder<\/h2>\n<p>The smart feeder feeds to the aquarium tank at the specified time by rotating the drum of food. The number of rotation is counted by the push button around the axis.<br \/>\nAs was implemented in the smart cooler\uff0cESP-WROOM-02 has a Web interface and Web APIs. By the Web APIs, we can feed fish remotely. Of course, we can set time for the feed.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-3\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-3\" data-slide-to=\"0\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-731\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0827-e1511064207391-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-3\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-3\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<h2>Materials<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.switch-science.com\/catalog\/2500\/\">ESPr developer<\/a><\/li>\n<li>AE-MOTOR8830 (DRV8830)<\/li>\n<li>DC motor (LEGO Mindstorms RCX motor)<\/li>\n<li>Push button (LEGO Mindstorms RCM push button)<\/li>\n<li>SSD1306 OLED monitor (128&#215;32)<\/li>\n<\/ul>\n<h2>Wiring<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\"alignnone size-large wp-image-742\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-12.58.17.png 1364w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2>Code<\/h2>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/smart_feeder#secret=660dc94b5f605\" title=\"GitHub - omzn\/smart_feeder: Aqua-tan smart feeder: An ESP based smart aquarium project\" data-secret=\"660dc94b5f605\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>A device to feed fish at the specified time. Smart feeder The smart feeder feeds to the aquarium tank at the specified time by rotating the drum of food. The number of rotation is counted by the push button around the axis. As was implemented in the smart cooler\uff0cESP-WROOM-02 has a Web interface and Web APIs. By the Web APIs, we can feed fish remotely. Of course, we can set time for the feed. Materials ESPr developer AE-MOTOR8830 (DRV8830) DC motor (LEGO Mindstorms RCX motor) Push button (LEGO Mindstorms RCM push button) SSD1306 OLED monitor (128&#215;32) Wiring Code<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":731,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-741","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=741"}],"version-history":[{"count":0,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/741\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/731"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=741"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=741"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":729,"date":"2017-11-19T00:30:32","date_gmt":"2017-11-18T15:30:32","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=729"},"modified":"2017-11-19T01:01:39","modified_gmt":"2017-11-18T16:01:39","slug":"aquatansmartcooler","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/aquatansmartcooler\/","title":{"rendered":"Aqua-tan Smart Cooler"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>For my home aquarium, I am developing distributed smart management system with several components using ESP-WROOM-02 boards.<br \/>\nThe components are cooler, feeder, light, pump, and environment monitor.<\/p>\n<h2>Smart cooler<\/h2>\n<p>Smart Cooler is simple. It has cooling fan and thermometer for water temperature.<br \/>\nThe ESP-WROOM-02 provides a Web interface (and also Web APIs) for parameters and metrics. We can set higher and lower bounds of temperature via Web and the cooling fan is activated according to the current water temperature.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-4\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-4\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-4\" data-slide-to=\"1\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-1024x1024.jpg\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-730\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-1024x1024.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-150x150.jpg 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-300x300.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-768x768.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-640x640.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-48x48.jpg 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-50x50.jpg 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/IMG_0826-e1511017557435-75x75.jpg 75w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\" size-large wp-image-736\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40.png 1324w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-4\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-4\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<h2>Materials<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.switch-science.com\/catalog\/2500\/\">ESPr developer<\/a><\/li>\n<li>DC-DC converter (12V -> 5V 500mA)<\/li>\n<li>DC Fan (24V &#8211; 9V)<\/li>\n<li>DS18B20<\/li>\n<li>MOSFET (2SK4017)<\/li>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/11629\">SparkFun 7-Segment Serial Display &#8211; White<\/a><\/li>\n<\/ul>\n<h2>Wiring<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-1024x1024.png\" alt=\"\" width=\"640\" height=\"640\" class=\"alignnone size-large wp-image-736\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-1024x1024.png 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-150x150.png 150w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-300x300.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-768x768.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-640x640.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-48x48.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-50x50.png 50w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40-75x75.png 75w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2017\/11\/Screen-Shot-2017-11-19-at-0.28.40.png 1324w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2>Code<\/h2>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/smart_cooler#secret=660dc94c85bae\" title=\"GitHub - omzn\/smart_cooler: Aqua-tan smart cooler: An ESP based smart aquarium project\" data-secret=\"660dc94c85bae\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>For my home aquarium, I am developing distributed smart management system with several components using ESP-WROOM-02 boards. The components are cooler, feeder, light, pump, and environment monitor. Smart cooler Smart Cooler is simple. It has cooling fan and thermometer for water temperature. The ESP-WROOM-02 provides a Web interface (and also Web APIs) for parameters and metrics. We can set higher and lower bounds of temperature via Web and the cooling fan is activated according to the current water temperature. Materials ESPr developer DC-DC converter (12V -> 5V 500mA) DC Fan (24V &#8211; 9V) DS18B20 MOSFET (2SK4017) SparkFun 7-Segment Serial Display &#8211; White Wiring Code<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":730,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-729","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=729"}],"version-history":[{"count":1,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/729\/revisions"}],"predecessor-version":[{"id":737,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/729\/revisions\/737"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/730"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=729"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=729"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":710,"date":"2016-12-02T11:18:28","date_gmt":"2016-12-02T02:18:28","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=710"},"modified":"2016-12-02T11:18:28","modified_gmt":"2016-12-02T02:18:28","slug":"christmas2016","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/christmas2016\/","title":{"rendered":"Christmas tree 2016"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>It&#8217;s December!<br \/>\nI made a cool Christmas tree using LEDs and Arduino.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-5\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-5\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-5\" data-slide-to=\"1\"><\/li><li class=\"\" data-target=\"#custom-carousel-5\" data-slide-to=\"2\"><\/li><li class=\"\" data-target=\"#custom-carousel-5\" data-slide-to=\"3\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-768x1024.jpg\" alt=\"img_7906\" width=\"640\" height=\"853\" class=\" size-large wp-image-713\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7906-36x48.jpg 36w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-768x1024.jpg\" alt=\"img_7890\" width=\"640\" height=\"853\" class=\" size-large wp-image-712\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7890-36x48.jpg 36w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-768x1024.jpg\" alt=\"img_7889\" width=\"640\" height=\"853\" class=\" size-large wp-image-711\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7889-36x48.jpg 36w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<div class=\"item\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-768x1024.jpg\" alt=\"img_7910\" width=\"640\" height=\"853\" class=\" size-large wp-image-714\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/12\/IMG_7910-36x48.jpg 36w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><br \/>\n<\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-5\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-5\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<p>https:\/\/twitter.com\/masasan_km\/status\/803834893348274176<\/p>\n<h3>Materials<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/12587\">Pro Micro 3.3V<\/a><\/li>\n<li>NeoPixel LED string \uff0832 LEDs\uff09<\/li>\n<li>3D printer<\/li>\n<\/ul>\n<h3>Code<\/h3>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/christmas2016#secret=660dc94dc125a\" title=\"GitHub - omzn\/christmas2016\" data-secret=\"660dc94dc125a\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>It&#8217;s December! I made a cool Christmas tree using LEDs and Arduino. https:\/\/twitter.com\/masasan_km\/status\/803834893348274176 Materials Pro Micro 3.3V NeoPixel LED string \uff0832 LEDs\uff09 3D printer Code<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":715,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-710","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=710"}],"version-history":[{"count":0,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/710\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/715"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=710"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=710"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":680,"date":"2016-11-11T12:33:30","date_gmt":"2016-11-11T03:33:30","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=680"},"modified":"2016-11-13T17:05:34","modified_gmt":"2016-11-13T08:05:34","slug":"what_we_lost_in_mbp2016","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/what_we_lost_in_mbp2016\/","title":{"rendered":"&#8221;What we lost in MacBook Pro 2016&#8243; device"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>Apple removed the famous start up sound from MacBook Pro 2016 as well as physical esc key.<br \/>\nSo I created a device having these features.<\/p>\n<p>When the ESC keyboard is powered on and launched, the MP3 player unit will emit the mac startup sound.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-6\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-6\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-6\" data-slide-to=\"1\"><\/li><\/ol><div class=\"carousel-inner\">\n<div class=\"item active\"><a href=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-1024x644.jpg\" alt=\"img_7637\" width=\"640\" height=\"403\" class=\" size-large wp-image-682\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-1024x644.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-300x189.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-768x483.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-640x403.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7637-e1478777221431-48x30.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><br \/>\n<\/div>\n<div class=\"item\">\n<a href=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-1024x713.jpg\" alt=\"img_7638\" width=\"640\" height=\"446\" class=\" size-large wp-image-683\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-1024x713.jpg 1024w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-300x209.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-768x535.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-640x446.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7638-48x33.jpg 48w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><br \/>\n<\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-6\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-6\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<p>https:\/\/twitter.com\/omzn\/status\/796903974913773568<\/p>\n<h3>Materials<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/12587\">Pro Micro 3.3V<\/a><\/li>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/13773\">Cherry MX Switch Breakout<\/a><\/li>\n<li><a href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/DFPlayer_Mini_SKU:DFR0299\">DFPlayer Mini<\/a><\/li>\n<li>Speaker, 8\u03a9, 0.5W<\/li>\n<\/ul>\n<p>MP3 player unit can be purchased from AliExpress from around 150 yen.<\/p>\n<h3>Wiring<\/h3>\n<p><a href=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1-300x263.png\" alt=\"esc_key_mp3_bb\" width=\"300\" height=\"263\" class=\"alignnone size-medium wp-image-685\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1-300x263.png 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1-768x674.png 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1-640x562.png 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1-48x42.png 48w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/esc_key_mp3_bb-1.png 861w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<h3>Code<\/h3>\n<p>Add the MP3 player startup code to the ESC keyboard code setup().<br \/>\nSince the sound does not emit well as it is done in the sample, we increase the delay between the commands sent to the MP3 player.<\/p>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/esc_keyboard_mp3#secret=660d062643ad8\" title=\"GitHub - omzn\/esc_keyboard_mp3\" data-secret=\"660d062643ad8\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>Apple removed the famous start up sound from MacBook Pro 2016 as well as physical esc key. So I created a device having these features. When the ESC keyboard is powered on and launched, the MP3 player unit will emit the mac startup sound. https:\/\/twitter.com\/omzn\/status\/796903974913773568 Materials Pro Micro 3.3V Cherry MX Switch Breakout DFPlayer Mini Speaker, 8\u03a9, 0.5W MP3 player unit can be purchased from AliExpress from around 150 yen. Wiring Code Add the MP3 player startup code to the ESC keyboard code setup(). Since the sound does not emit well as it is done in the sample, we increase the delay between the commands sent to the MP3 player.<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":686,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-680","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=680"}],"version-history":[{"count":0,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/680\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/686"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=680"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=680"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":659,"date":"2016-11-06T15:49:43","date_gmt":"2016-11-06T06:49:43","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=659"},"modified":"2016-11-10T13:34:13","modified_gmt":"2016-11-10T04:34:13","slug":"esc-only-keyboard","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/esc-only-keyboard\/","title":{"rendered":"ESC (only) keyboard"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<p>As you know, Apple removed physical esc key from new MacBook Pro. Ok, I made a device that can enter esc key only.<br \/>\nControlled by Pro Micro (Arduino compatible), the key cap and body are made by 3D printer.<\/p>\n<div class=\"carousel slide\" id=\"custom-carousel-7\" data-ride=\"carousel\"><ol class=\"carousel-indicators\"><li class=\"active\" data-target=\"#custom-carousel-7\" data-slide-to=\"0\"><\/li><li class=\"\" data-target=\"#custom-carousel-7\" data-slide-to=\"1\"><\/li><\/ol><div class=\"carousel-inner\">\n    <div class=\"item active\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-225x300.jpg\" alt=\"img_7569\" width=\"225\" height=\"300\" class=\" size-medium wp-image-661\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7569-36x48.jpg 36w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/div>\n    <div class=\"item\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-225x300.jpg\" alt=\"img_7572\" width=\"225\" height=\"300\" class=\" size-medium wp-image-662\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-225x300.jpg 225w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-768x1024.jpg 768w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-640x853.jpg 640w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-300x400.jpg 300w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/IMG_7572-36x48.jpg 36w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/div>\n<\/div><a class=\"left carousel-control\"  href=\"#custom-carousel-7\" data-slide=\"prev\"><span class=\"glyphicon glyphicon-chevron-left\"><\/span><\/a><a class=\"right carousel-control\" href=\"#custom-carousel-7\" data-slide=\"next\"><span class=\"glyphicon glyphicon-chevron-right\"><\/span><\/a><\/div>\n<p>https:\/\/twitter.com\/omzn\/status\/791899233645244416<\/p>\n<p>https:\/\/twitter.com\/omzn\/status\/791899378080370688<\/p>\n<h3>Materials<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/12587\">Pro Micro 3.3V<\/a><\/li>\n<li><a href=\"https:\/\/www.sparkfun.com\/products\/13773\">Cherry MX Switch Breakout<\/a><\/li>\n<\/ul>\n<h3>Wiring<\/h3>\n<table>\n<thead>\n<tr>\n<th>Pro Micro<\/th>\n<th>Cherry<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>GND<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Code<\/h3>\n<p><script src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/plugins\/embed-extended\/assets\/js\/embed.js?ver=1.4.0\"><\/script><iframe loading=\"lazy\" class=\"ee-iframe\" sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-admin\/admin-ajax.php?action=embed_extended_iframe&#038;url=https:\/\/github.com\/omzn\/esc_keyboard#secret=660dc94f8ab86\" title=\"GitHub - omzn\/esc_keyboard: esc key only keyboard project\" data-secret=\"660dc94f8ab86\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" data-class=\"wp-embedded-content\"><\/iframe> <\/p>\n<h3>Case<\/h3>\n<ul>\n<li><a href=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2016\/11\/case.zip\">STL data<\/a><\/li>\n<\/ul>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>As you know, Apple removed physical esc key from new MacBook Pro. Ok, I made a device that can enter esc key only. Controlled by Pro Micro (Arduino compatible), the key cap and body are made by 3D printer. https:\/\/twitter.com\/omzn\/status\/791899233645244416 https:\/\/twitter.com\/omzn\/status\/791899378080370688 Materials Pro Micro 3.3V Cherry MX Switch Breakout Wiring Pro Micro Cherry GND 1 2 2 Code Case STL data<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":660,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[19],"jetpack-portfolio-tag":[],"class_list":["post-659","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-products","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=659"}],"version-history":[{"count":1,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/659\/revisions"}],"predecessor-version":[{"id":663,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/659\/revisions\/663"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/660"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=659"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=659"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":642,"date":"2016-11-06T15:30:53","date_gmt":"2016-11-06T06:30:53","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=642"},"modified":"2025-01-30T12:46:40","modified_gmt":"2025-01-30T03:46:40","slug":"profile","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/profile\/","title":{"rendered":"Profile"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<figure id=\"attachment_34\" aria-describedby=\"caption-attachment-34\" style=\"width: 193px\" class=\"wp-caption alignright\"><a href=\"http:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2011\/10\/DSC_1735_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-34\" title=\"Osamu and Taiji (my son)\" src=\"http:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2011\/10\/DSC_1735_2-e1317483310954-193x300.jpg\" alt=\"Osamu and Taiji (my son)\" width=\"193\" height=\"300\" srcset=\"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2011\/10\/DSC_1735_2-e1317483310954-193x300.jpg 193w, https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp\/wp-content\/uploads\/2011\/10\/DSC_1735_2-e1317483310954.jpg 437w\" sizes=\"auto, (max-width: 193px) 100vw, 193px\" \/><\/a><figcaption id=\"caption-attachment-34\" class=\"wp-caption-text\">Osamu and Taiji (my son)<\/figcaption><\/figure>\n<h3>Name<\/h3>\n<p>Osamu Mizuno<\/p>\n<h3>Affiliation \/ Title<\/h3>\n<p>Professor<br \/>\nDirector of Faculty of Information and Human Sciences<br \/>\nFaculty of Information and Human Sciences, Kyoto Institute of Technology<\/p>\n<h3>Degree<\/h3>\n<p>Ph.D (Engineering) (Osaka University)<\/p>\n<h3>Career<\/h3>\n<dl>\n<dt>Professor (Jan 2017 &#8211; present)<\/dt>\n<dd>Faculty of Information and Human Sciences, Kyoto Institute of Technology, Japan<\/dd>\n<dt>Associate Professor (Sep 2009 &#8211; Dec 2016)<\/dt>\n<dd>Graduate School of Science and Technology, Kyoto Institute of Technology, Japan<\/dd>\n<dt>Scientist Adviser (Jul 2015 &#8211; Sep 2015)<\/dt>\n<dd>Department of Computer Engineering, Faculty of Engineering, Kasetsart University, Thailand<\/dd>\n<dt>Visiting Researcher (Mar 2012 &#8211; Jan 2013)<\/dt>\n<dd>Software Analysis &#038; Intelligence Lab., Queen&#8217;s University, Canada<\/dd>\n<dt>Scientist Adviser (Feb 2008 &#8211; Mar 2008)<\/dt>\n<dd>Department of Computer Engineering, Faculty of Engineering, Kasetsart University, Thailand<\/dd>\n<dt>Assistant Professor (Apr 2002 &#8211; Aug 2009)<\/dt>\n<dd>Graduate School of Information Science and Technology, Osaka University, Japan<\/dd>\n<dt>Assistant Professor (Apr 1999 &#8211; Mar 2002)<\/dt>\n<dd>Graduate School of Engineering Science, Osaka University, Japan<\/dd>\n<dt>Ph.D. (Sep 2001)<\/dt>\n<dd>Graduate School of Engineering Science, Osaka University, Japan<\/dd>\n<\/dl>\n<h3>Lectures<\/h3>\n<ul>\n<li>Software Engineering<\/li>\n<li>Software Metrics<\/li>\n<li>Empirical Software Engineering<\/li>\n<\/ul>\n<h3>Major publications<\/h3>\n<ul>\n<li><a href=\"http:\/\/se.is.kit.ac.jp\/pman\/pman3.cgi?MODE=list;MENU=simple;FROM=author;SEARCH=mizuno;LOGIC=or;SORT=t_descend;PTYPE=all;OPT=shortvn;OPT=jcr;OPT=note;LANG=en\">Complete list of my publications<\/a><\/li>\n<li><a href=\"http:\/\/scholar.google.com.au\/citations?user=Ha-gD8IAAAAJ&#038;hl=en\">Citations<\/a><\/li>\n<\/ul>\n\n<h3>Academic Society<\/h3>\n<h4>Memberships<\/h4>\n<ul>\n<li>A member of IEEE, IEICE, IPSJ.<\/li>\n<li>Review committee of IEICE (from 2003)<\/li>\n<\/ul>\n<h4>Conference\/Workshop Chairs<\/h4>\n<ul>\n<li>Program Committee Chair of 12th International Conference on Software Engineering Research, Management and Applications(SERA2014)<\/li>\n<li>Finance Chair of <a href=\"http:\/\/mmde.is.kit.ac.jp\/SNPD2012\/\">13th ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel\/Distributed Computing (SNPD 2012)<\/a><\/li>\n<li>Publicity Co-chairs of the 22nd annual International Symposium on Software Reliability Engineering (ISSRE2011)<\/li>\n<li>Program committee chair of JASPIC SPI Japan2007 (2007)<\/li>\n<\/ul>\n<h3>Program Committee Members<\/h3>\n<ul>\n<li>Program Committee Member of the 15th IEEE-RIVF International Conference on<br \/>\nComputing and Communication Technologies (RIVF2019)<\/li>\n<li>Program Committee Member of the 10th International Workshop on Empirical Software Engineering in Practice (IWESEP 2018)<\/li>\n<li>Program Committee Member of the 3rd International Conference on<br \/>\nComputational Big Data, Cloud Computing, Data Science &amp;<br \/>\nEngineering (BCD2018)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/paris.utdallas.edu\/qrs18\/index.html\">the 2018 IEEE International Conference on Software Quality, Reliability &amp; Security (QRS 2018)<\/a><\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 42nd Annual International Computers, Software &amp; Applications Conference (COMPSAC2018)<\/a><\/li>\n<li>Program Committee Member of the 2nd International Conference on<br \/>\nComputational Big Data, Cloud Computing, Data Science &amp;<br \/>\nEngineering (BCD2017)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/paris.utdallas.edu\/qrs17\/index.html\">the 2017 IEEE International Conference on Software Quality, Reliability &amp; Security (QRS 2017)<\/a><\/li>\n<li>Program Committee Member of the 9th International Workshop on Empirical Software Engineering in Practice (IWESEP 2017)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 41st Annual International Computers, Software &amp; Applications Conference (COMPSAC2017)<\/a><\/li>\n<li>Program Committee Member of The IIAI\/IEEE International Conference on Applied Computer and Communication Technologies (COMCOM2017)<\/li>\n<li>Program Committee Member of the 12th IEEE-RIVF International Conference on<br \/>\nComputing and Communication Technologies (RIVF2016)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 40th Annual International Computers, Software &amp; Applications Conference (COMPSAC2016)<\/a><\/li>\n<li>Program Committee Member of the 11th IEEE-RIVF International Conference on<br \/>\nComputing and Communication Technologies (RIVF2015)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 39th Annual International Computers, Software &amp; Applications Conference (COMPSAC2015)<\/a><\/li>\n<li>Program Committee Member of 13th International Conference on Software Engineering Research, Management and Applications (SERA2015)<\/li>\n<li>Program Committee Member of <a href=\"http:\/\/iwesep2014.naist.jp\/\">The 6th International Workshop on Empirical Software Engineering in Practice (IWESEP2014)<\/a><\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 38th Annual International Computers, Software &amp; Applications Conference (COMPSAC2014)<\/a><\/li>\n<li>Program Committee Member of <a href=\"http:\/\/www.compsac.org\/\">The 37th Annual International Computers, Software &amp; Applications Conference (COMPSAC2013)<\/a><\/li>\n<li>Program Committee Member of <a href=\"http:\/\/mmde.is.kit.ac.jp\/SNPD2012\/\">13th ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel\/Distributed Computing (SNPD 2012)<\/a><\/li>\n<li>Program Committee Member of <a href=\"http:\/\/sites.google.com\/site\/iwesep2012\/\">4th International Workshop on Empirical Software Engineering in Practice (IWESEP 2012)<\/a><\/li>\n<li><a href=\"http:\/\/mensura.wordpress.com\/\">The Joint Conference of the 21th International Workshop on Software Measurement (IWSM) and the 6th International Conference on Software Process and Product Measurement (Mensura 2011)<\/a>\u00a0<\/li>\n<li><a href=\"http:\/\/www.cs.iupui.edu\/~ydai\/DASC09\/\">The 8th IEEE International Conference on Dependable, Autonomic and Secure Computing (DASC&#8217;09)<\/a>\u00a0<\/li>\n<li><a href=\"http:\/\/www.sersc.org\/SS\/ATSRS\/\">Special Session on Advanced Technologies for Software Reliability and Safety (ATSRS)<\/a>\u00a0in\u00a0<a href=\"http:\/\/www.sersc.org\/ASEA2009\/\">2009 International Conference on Advanced Software Engineering &amp; Its Applications (ASEA2009)<\/a>\u00a0<\/li>\n<li><a href=\"http:\/\/sdlab.naist.jp\/IWESEP2009\/index.html\">2009 International Workshop on Empirical Software Engineering in Practice (IWESEP 2009)<\/a><br \/>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>Name Osamu Mizuno Affiliation \/ Title Professor Director of Faculty of Information and Human Sciences Faculty of Information and Human Sciences, Kyoto Institute of Technology Degree Ph.D (Engineering) (Osaka University) Career Professor (Jan 2017 &#8211; present) Faculty of Information and Human Sciences, Kyoto Institute of Technology, Japan Associate Professor (Sep 2009 &#8211; Dec 2016) Graduate School of Science and Technology, Kyoto Institute of Technology, Japan Scientist Adviser (Jul 2015 &#8211; Sep 2015) Department of Computer Engineering, Faculty of Engineering, Kasetsart University, Thailand Visiting Researcher (Mar 2012 &#8211; Jan 2013) Software Analysis &#038; Intelligence Lab., Queen&#8217;s University, Canada Scientist Adviser (Feb 2008 &#8211; Mar 2008) Department of Computer Engineering, Faculty of &#8230;<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":805,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[18],"jetpack-portfolio-tag":[],"class_list":["post-642","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-profile","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=642"}],"version-history":[{"count":10,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/642\/revisions"}],"predecessor-version":[{"id":1437,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/642\/revisions\/1437"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/805"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=642"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=642"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}},{"id":635,"date":"2016-11-06T15:20:48","date_gmt":"2016-11-06T06:20:48","guid":{"rendered":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/?post_type=jetpack-portfolio&#038;p=635"},"modified":"2016-11-06T15:39:47","modified_gmt":"2016-11-06T06:39:47","slug":"research","status":"publish","type":"jetpack-portfolio","link":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/portfolio\/research\/","title":{"rendered":"Research"},"content":{"rendered":"<div class=\"entry-content\" itemprop=\"text\">\n<h2>Fault-proneness Filtering (2006~)<\/h2>\n<p>The fault-prone module detection in source code is of importance for assurance of software quality. Most of previous fault-prone detection approaches are based on software metrics. Such approaches, however, have difficulties in collecting the metrics and constructing mathematical models based on the metrics.<\/p>\n<p>In order to mitigate such difficulties, we propose a novel approach for detecting fault-prone modules using a spam filtering technique, named Fault-Prone Filtering. Because of the increase of needs for spam e-mail detection, the spam filtering technique has been progressed as a convenient and effective technique for text mining. In our approach, fault-prone modules are detected in a way that the source code modules are considered as text files and are applied to the spam filter directly.<\/p>\n<p>In order to show the usefulness of our approach, we conducted an experiment using a large source code repository of Java based open source project. The result of experiment shows that our approach can classify about 85% of software modules correctly. The result also indicates that fault-prone modules can be detected relatively low cost at an early stage.<\/p>\n<h2>Data Mining from Software Project Data in Industries (1998~)<\/h2>\n<p>We have applied various data mining techniques to data<br \/>\ncollected from industries in Japan. The aim of this study is<br \/>\nto investigate significant factors to either of the quality<br \/>\nof software product, cost for the development, and duration<br \/>\nof the development.<\/p>\n<p>So far, we used association rules mining, Bayesian belief<br \/>\nnetwork, decision trees, Bayesian classifier, factor<br \/>\nanalysis, and so on.<\/p>\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\" itemprop=\"text\">\n<p>Fault-proneness Filtering (2006~) The fault-prone module detection in source code is of importance for assurance of software quality. Most of previous fault-prone detection approaches are based on software metrics. Such approaches, however, have difficulties in collecting the metrics and constructing mathematical models based on the metrics. In order to mitigate such difficulties, we propose a novel approach for detecting fault-prone modules using a spam filtering technique, named Fault-Prone Filtering. Because of the increase of needs for spam e-mail detection, the spam filtering technique has been progressed as a convenient and effective technique for text mining. In our approach, fault-prone modules are detected in a way that the source code modules &#8230;<\/p>\n\n<\/div>\n","protected":false},"author":1,"featured_media":644,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"jetpack-portfolio-type":[18],"jetpack-portfolio-tag":[],"class_list":["post-635","jetpack-portfolio","type-jetpack-portfolio","status-publish","format-standard","has-post-thumbnail","hentry","jetpack-portfolio-type-profile","entry-lead"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio"}],"about":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/types\/jetpack-portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/comments?post=635"}],"version-history":[{"count":0,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio\/635\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media\/644"}],"wp:attachment":[{"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/media?parent=635"}],"wp:term":[{"taxonomy":"jetpack-portfolio-type","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-type?post=635"},{"taxonomy":"jetpack-portfolio-tag","embeddable":true,"href":"https:\/\/se.is.kit.ac.jp\/~o-mizuno\/wp-json\/wp\/v2\/jetpack-portfolio-tag?post=635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}]