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, 8Ω, 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.