Keypad pin 1 to Arduino digital 3 //C2; Keypad pin 2 to Arduino digital 5 //R1; ... Although the code is an entry-level one, ... you have to fiddle the “rummy” keypad using your analog multimeter. It ...

Hi, creator here. The design is modular, you can add up to 16 analog inputs (3 used by the joystick), so if you want to, you can have 13 sliders without code or hardware modifications.

Little Bird Electronics posted an article about using an analog voltage reference with Arduino. This is a tool available when using an analog-to-digital converter. By setting up either an internal … ...