About AMButton AMButton is derived from Analog Multi-Button, it's a library to detect button press events on a setup where multiple buttons are connected to a single Arduino analog pin.

Arduino multi light-strips Arduino Mega code to control multiple WS2812b RGB LED strips using buttons, LCD screen and motion sensor.

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small ...

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.