Red Echo

October 10, 2011

How to program an ATtiny45 or ATtiny85 microcontroller using the Arduino software and hardware. Includes add-ins for treating these microcontrollers as a different kind of Arduino board. The ATtiny chips are tiny and cheap; if you can solve your problem using no more than 5 I/O pins, they cost about $2 in single units and closer to $1.25 in quantity.