MatterControl 1.5.3 for OS X cannot connect to FormBot via USB

  • I am using MatterControl 1.5.3 on OS X 10.9.5, and I am using FormBot, which is similar to gCreate gMax.

    I have selected the 3D printer using the wizard, and plugged the printer to the computer via USB. However when I click "connect", it says "Unable to communicate with printer" "Status: Unknown Reason"

    Then I clicked "edit" to open the edit dialog. For serial port, it lists:




    and the third one is chosen

    Then the baud rate are shown:




    and it is the 250000 that is selected.

    and the "Auto Connect" option is checked.

    When I switch to 115200, the printer takes forever to respond (never).

    So anything wrong here? And what setting should I use?


  • With everything you've mentioned, it seems like the printer should be able to connect.

    Can you confirm that the printer can connect using similar software (Cura, Arduino IDE, etc.)?

  • Oh..... after I installed an updated version of FTDI driver, it works 🙂

    Could you please tell us the correct /dev file and baud rate? Is it /dev/tty.usbserial-<name> and 256000?


  • Glad to hear it!

    250000 is the standard baud rate; /dev/tty.usbserial-<name> sounds right.

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