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2. Connect

The supply powers the motor, the serial adapter connects the PC.

1. Connect power and the PC

  1. Connect the supply to a power connector: DC+ to positive, DC− to negative. Check twice.

  2. Connect the serial adapter to the UART connector with the UART cable: TX to RX, RX to TX. 3.3 V only.

    The UART connector. TX of the driver goes to RX of the adapter and RX to TX. The UART connector. TX of the driver goes to RX of the adapter and RX to TX.
    Figure 1: The UART connector. TX of the driver goes to RX of the adapter and RX to TX.

  3. Power on.

The LED blinks for about two seconds while the bootloader waits for a host. Then the firmware starts, and the LED stays on steadily: the driver is not calibrated yet, which it reports as an error state.

On, steady
Figure 2: On, steady.
The serial adapter alone

The serial adapter alone powers the driver's logic: it answers over UART without the supply, but reports a Vbus error and will not calibrate or move.

More: Power and the CAN daisy chain · Connectors and pinout.

2. Open Motor GUI or a terminal

  1. Open motorgui.com in Chrome or Edge.
  2. Choose the serial connection.
  3. Press Connect, and choose the adapter's port.

Motor GUI connection bar with UART transport, baud rate and Connect
Figure 3: Motor GUI connection bar with UART transport, baud rate and Connect.

The driver's identity and state appear: hardware and firmware version, serial number, Not calibrated, No errors.

If nothing connects: the port, the cable's TX/RX, the browser (Web Serial needs a Chromium browser).

More: Motor GUI.

  1. Open a terminal on the adapter's port: 256000 baud, line ending CR+LF.
  2. Type #Info.

The driver prints its hardware and firmware version, its CAN ID, whether it is calibrated, and the motor's parameters.

More: The serial terminal.

Check

The driver's identity and live state appear before you change settings. A missing connection is covered in Motor GUI or Troubleshooting.

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