Update CTL200 laser controller firmware

Last updated: 2026-10-04

  1. Remove the laser from the board and close all open serial connections.

  2. Turn off the controller and set the number 2 configuration switch to ON.

    CTL200 Digital butterfly laser diode controller configuration switch boot mode
    CTL200 configuration switch boot mode

  3. Turn on the controller.

  4. Run the utility cm3wsd.exe (available for download here).

  5. Select the program (hex file) to upload. Download the latest CTL200 firmware from the downloads page.

    Select the Serial Port, the Baud Rate ('115200') and Flash Action ('Program').

    Update microcontroller firmware Step 1

  6. Click Start.

    The program will install on the microcontroller.

    Update microcontroller firmware Step 2

  7. Once finished, turn off the controller and set the number 2 configuration switch to OFF.

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