AVR-Chat

>
>Did you have a look at your serial port connections?? all the
>devices are connected over your PC's serial port, if there is a
>ground potential difference you might have your communications
>garbled up.

It's not a problem. The gounds of everything on the bench tie to the same 
point.


>Can try to put your PC power at the same outlet as the PSU of your
>test boards.You can also have a look if the casing of your serial
>connector 'sparks' if you touched with it to the PC serial port
>ground shield of the PC serial connector.
>I have had very bad experience with PC paralel port and printers,
>sometimes a ground difference of 40 VAC!!!!
>
>
>  Also check your test board PSU, good DC??? , low ripple??, check
>with a scope!!!.

Bench power supply, or batteries, no difference.


FWIW, It's all working today..

I walked in, turned it on, assembled, loaded, and am debugging in the ice, 
as if nothing happened yesterday at all.

#$!@@#!@$ Typical..

At least it's in a good mood so far.