I have used ardunio'a in the past for several model railway projects driving relays and servos. So far so good however this time I would like to use a 4x4 keypad to switch servos and or relays. I can get 4x4 matrix to work but how do I then call a servo / relay function ?
Nothing complex to start the envisaged test been 5 relays with three relays activated with 3 of the servos. I know i could use separate switches but would to prefer to learn how to use a keyboard as future projects may involve multiple servos
thanks in advance