MatterControl Connect Firmware Configuration for Prusa i3 Mk2/Mk3
To activate the extra serial port on the Prusa i3 Mk2 or Mk3, you will need to put it into farm mode. Here is how.
- Connect to your printer through USB.
- Open the G-Code terminal in MatterControl and send the printer a G98 command.
- Reboot the printer.
- When the printer's screen shows you a message asking you to "connect monitoring or hold knob to continue" press and hold the knob until the message goes away and the info screen returns.
You can deactivate farm mode in the future by sending the printer a G99 command over USB.