If you are using pushbuttons and don't quite have enough digital I/O, here's a little trick to free up a pin or two. +5V +_| -|_ PB1 + | \ / 20K \ / \_______________\ To AVR | \ / Input +_| / -|_ PB2 \ 150K + | / | …

Two Pushbuttons on One Input for More I/O

system July 9, 2010, 8:48am 7

This is very good. Thanks for posting the trick.

Álvaro