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Upload GRBL CNC Firmware

  • When you get the board from PiBot, the firmware have already in the board. you just plug and set the parameters for your machine then can work.
  • if you need upload the firmware to the board, please turn the switch on board to the "3D printer/programming model".
  • In run the cnc please turn back the switch to the "CNC model"




Turn the switch to the 3D printer/programming model



Install the USB Driver for the Controller Board


Download the Firmware and Upload from PiBot Website

Please use the PiBot version upload tool and firmware, if you are a begineer.

The GRBL firmware of PiBot version have been modify the pins to compatible the controller board, you just need to direct upload.


Check the COM Port Number in Device Manager



Run the PiBot Modify Versionarduino"arduino.exe" in the Upload tool Folder and Open the PiBotGRBL.ino from Folder of Firmware



Select the COM which You Have Checked in Device Manager before



Select the Board - PiBot Controller Rev2.x



Verify and Upload the Firmware to the Board



Turn the switch to the Back to CNC Model


The parameters such as stepper setting, just need to set in the software, please check the related tutorails.


Congratuation! You Have Finished upload the firmware to the board :-)


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