I bought the graphical LCD version from EBay (fish...) that I stumbled upon while doing some other shopping and before I knew what it was and where it originated from. Now that I've read good part of this thread, I don't think I want to mess around with mine. I wouldn't mind buying another one, though, with the intention of being able to update its firmware. Looking at the documentation of the original project, there is a version for ATMega644 or 1284; there are schematics in that pdf and everything. Has crystal measurements (I think), DC-DC for Zener (again, I think), input protection with rail-to-rail zeners and tons of more parts than the one I've got, which doesn't have much more than a few R, a few C and uC and screen. But no one seems to be talking about it (ATMega644)? Does this actually exist (there seems to be code for it)? Can I buy it? Or do I need to design a PCB for it myself (if the software already exist, that's a viable option for me).