I am converting an old vending machine into a sitting box and wanted to light it up with leds. It has a 21 button touch key pad (for selecting what snacks you want)…3 columns and 7 rows. the controller has 12 pin connection coming from the top. Attached to that was a 12 pin with the wires connecting to a 8 pin and 4 pin connection.
i am a total newbie, but what would i need to do to program a device so when the buttons are fixed to change to a fixed LED color.
would this be feasible?
this is the controller i wanted to use.