Hi, i like to create a board for my esp32 devkit edrums project.
I like to have 12 input for the piezo pads, every input will be connected with 1M ohm resistor and a zener diode in parallel mode and every one of them will be connected with an analog input on my esp32 devkit board. Also i like to connect midi interface and that needs to be connected on tx pin and to 3.3v pin with 220ohm resistor in both pins.
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