What I'm doing with my LK204-25-PC is wiring five switches directly to the 10pin keypad header as follows: SW1 crosses pins 1 and 6 SW2 crosses pins 2 and 7 SW3 crosses pins 3 and 8 SW4 crosses pins 4 and 9 SW5 crosses pins 5 and 10 This is basically just using the diagonals - SW1 is row1/column1 SW...

I'd like to use two of the GPO's on my LK204-25PC to vary the power to two or three of my case fans like this: GPO1 GPO2 Fan Voltage OFF OFF 12v ON OFF 7v OFF ON 5v ON ON 0v (off) Unfortunatley, I don't know how to design a circuit to do this. Heh. Anyone care to help? I think this would be a great ...