We tested the button pad with the Bus Pirate, but the same basic principals apply to any custom microcontroller code. The board runs at 5volts, so we powered it from the Bus Pirate’s on-board ...

Ned sent in a package of debounce code that monitors multiple buttons, debounces them, and detects button hold and release. This code is tailored for an 8051 processor. Button_debounce_8051.c ...