Hi Graynomad,
I don't have a schematic just a home made circuit board and what I am trying to achieve is just a personal project where I can plug a card into the slot (circuit 1) and get one effect and then the other card creates another. Yes I can do it with a switch to change the resistance detection of the circuit but I want to try and get a greater understanding of writing a program that would do it automatically.
I have just started playing around with arduino's and having fun doing little projects !!
Regards