That is essentially my plan. I ordered a LCD to play with, as I don't want to monkey with my working printer. Each button on my printer is attached to a single pin on the atmega, I think running the button board through the rpi gpio will be the easy part. And honestly the serial relay part to a remo...

Have you made any progress with this? I am interested for a similar project. I would like my RPi to capture and pass on to a wireless device, the contents of the LCD for my 3D printer. The printer is based on the mighyboard , schematic https://www.thingiverse.com/thing:16058 . The best answer from t...