120 ohm Termination Resistor

The header for the 120R termination resistor is circled in purple

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DFU Mode

  1. Add a jumper as shown in the image below so the board can be powered via a USB connection image

  2. Connect your device to your Pi via USB
  3. Press and hold the Reset and BOOT buttons down (button locations shown in step 1)
    1. Release Reset button
    2. Release BOOT button
  4. The device should now be in DFU mode. Verify this via the lsusb command, which should look something like this: 
     Bus 001 Device 005: ID 0483:df11 STMicroelectronics STM Device in DFU Mode

Katapult Config

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Klipper Config

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Sample Configuration

A sample configuration file can be found at https://github.com/bigtreetech/MMB/tree/master/Firmware