Hello I'm new here!
What is the problem?
I've got an old Fabtotum machine getting dusty and would love to make it communicate with octoprint. it runs on a custom Arduino (named totumduino) connected to a Pi3. If buying a different board and reconnecting it would solve it, would anybody be willing to give some advice? I've not found a single thread on this machine here, so I'm guessing I'm somewhat out of luck. There's not connection to the serial port, so getting that to work is the solution.
I've never tinkered with a machine like this before, so bare with me 
GitHub - FABtotum/FAB_Electronics: Electronics of the FABtotum Personal Fabricator
What did you already try to solve it?
The webcam included does give an image, so that's … something I guess?
To be more complete: it's now communicating with the board through ttyAMA0, but that's where it ends. I don't have any control over the board.
I've got this from the terminal:
Recv: FIRMWARE_NAME:Marlin FIRMWARE_URL:GitHub - FABtotum/FABlin: The FABtotum Personal Fabricator Firmware, a Marlin derivate made to support hybrid manufacturing and digital acquisition PROTOCOL_VERSION:1.0 MACHINE_TYPE:FABtotum EXTRUDER_COUNT:4 UUID:00000000-0000-0000-0000-000000000000
Additional information about your setup
Fabtotum fabricator