Hi, I am a newbie that tries not to ask questions until all options are explored but now, I have reached the point when I need to ask for some help. In short, I have made custom PCB based on 328P-PU with FT232RL and everything works fine on Arduino ver. 0022. I can upload sketches, auto-reset before upload works fine but in Arduino versions 1.0 and above I get error Invalid device signature (0x000000) During last couple of weeks none of these helped: - Triple checked all wiring - Changed differed version of bootloaders on chip - Changed boards.txt to fit device signature of the chip - Changed programmer from arduino to stk500 - Followed many guides that explains how this can be solved
But still no luck to resolve it. I hate the fact that with ver.0022 everything works fine.
So far I have reached conclusion that this error could be related to -V "Universal command" described in this topic: http://arduino.cc/forum/index.php/topic,99478.msg746079.html#msg746079 which is not supported in Optiboot.
Any help or hint is appreciated, Thank you in advance