Atmel ISP programming from Raspberry Pi GPIO

Demonstrating Atmel AVR ISP programming using a Raspberry Pi. I included a FET and tri-state buffer to protect the Raspberry Pi's GPIO. The ATmega1284P is powered from 3.3V but the buffer should allow the Raspberry Pi to be safely connected to a microcontroller powered from 5V.

 

More information is available in my blog post, blog.stevemarple.co.uk/2012/07/avrarduino-isp-programmer-....

Done