Hi,
a couple of years ago, I started to build a radioactive@home kit (Rev.2.61) (
http://radioactiveathome.org/en/ ) but then never found time to finnish ist. Yesterday I stumbled upon the pcb again und finnished it. Unfortunately it does not work. The project seems to be abandoned, so no help from there.
No idea what could be wrong. I doublechecked parts placement and soldering. Everything seems ok. The display shows just all pixels on in the upper row and all pixels off in the second row.
5V supply voltage is there and the 20MHz oscillator works with ~1,6Vpp. Besides that, nothing really happens on the board. No PWM for the HV, no RX/TX, no display :-(
The ATMega came as 'Preprogrammed' and currently I suspect it to not be programmed or to be dead. I'm not a µcontroler guy so I kind of hit a wall here.
Is there anything how I could check if it's a problem of the µC or if I need to re-re-recheck the rest of the board?
Any help is highly appreciated
Thanks