laser powered rhythm machine.
Project showcase by vtol
Multifunctional network device for autonomous activity in the city environment. Its main function is communication through Wi-Fi networks.
It's a power shield with Li-po battary. That one is from local russian company - should be hard to get it shipped, but you can find many similar. Like this one - https://www.lelong.com.my/arduino-lipo-power-shield-tensen-F869764-2007-01-Sale-I.htm
With standard buttons directly soldered to pins (no multiplexers were used).
any arduino will work, but you can even connect i2c keys drectly to ESP
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