Hi, for a few months ago I set some fuses wrong and ended up with a ATMega2560 prototype board that was of no use. I knew from the beginning that it could be "saved" through HV programming but put it to the side because I had more boards to work with...It's now time to save this one.
I have had a read through this tutorials of how to do it: http://www.societyofrobots.com/member_tutorials/node/239
and the original one that the above is based on: http://mightyohm.com/blog/2008/09/arduino-based-avr-high-voltage-programmer/
The first questions I have is regarding using a ATMega2560 as a programmer instead of the smaller boards they use in the tutorials, do I use the same ports (PD,PC,PA..etc) as in the tutorial or the same arduino pins? Do I have to change the sketch?
Second question, what pins should I use on the bricked MCU for HV programming? Same ports (PA,PB,PC..etc) or different pins from the smaller MCUs?