(I think) I need second microcontroller for few reasons:
- First, the display works on 3v3, so it needs a regulator, which has big enough quiescent current to drain the battery within few weeks
- Second, I had big problems with getting to work both display and Timer/Counter1. Using them at the same time created some enormous bugs
- And finally, similar problems occurred with the encoder library I was using, and I was too lazy to write my own encoder-handling code
I attached the circuit diagram. It's missing crystal oscillators (both 8MHz) and few capacitors here and there, but I hope it helps. Thanks for help!
Main.pdf (43.2 KB)