Elliot Williams @ hackaday.com show us how to use your Arduino to program AVR TPI enabled microcontrollers.
Turning an Arduino of virtually any sort into a simple AVR 6-pin ISP programmer is old hat. But when Atmel came out with a series of really tiny AVR chips, the ATtiny10 and friends with only six pins total, they needed a new programming standard. Enter TPI (tiny programming interface), and exit all of your previously useful DIY AVR programmers.
Turn Arduino into an AVR TPI Programmer – [Link]