I'm trying to create a stand alone arduino based board and I started with this:-
The problem I have is trying to program it.
I have: An Arduino UNO An Olimex AVR-ISP500
I know there are issues with using the UNO, but I had more success with that method (I managed to get the error that the signature was wrong on the chip (which It will be if it's a 328pu and not a 328p )).
with the ISP500 though I could never get it to sync with the chip.
Can anyone guide me as to what is a bare minimum circuit to be able to program this chip with the ISP500 (I'd rather keep the UNO for experiments)?
I'm quite new to the hardware side of things, so the clearer / simpler the better :)