I have a project that requires an arduino to replace a 3x4 keypad.
I have mapped out which pins are needed to do the keypresses such as:
Key 1 = 9,3 Key 2 = 8,3 etc...
But I am stuck on how I would simulate the actual key press? eg, 9 and 3 need be joined for the hardware expecting the keypress "1".
Is this actually possible with an Arduino?