[Kevin Fodor] shares his method of reading multiple inputs on one pin of a microcontroller ... that provides a unique voltage value for each button pushed. The only real drawback is that the ...

But if you just want to add in some buttons without reaching for an extra IC you’ll love this hack. [John Boxall] shows how to add four buttons using one ADC pin. The concept is nothing new.

How hard can it be to press a button and toggle the state of an LED on your Arduino? Harder than you might think. When you press a button tied to an INPUT GPIO pin, the pin actually experiences ...

ESP32_Button is an Arduino library designed for creating both GPIO and ADC ... press is completed and button is up attachLongPressUpEventCb Button *btn = new Button(pin number, pullupActive) This ...