Open up a serial connection to the Arduino board and check if GRBL is running. Click the 'Upload' and GRBL should compile and flash to your Arduino! Note: flashing with a programmer also works by using the 'Upload Using Programmer' menu command.)ģ. Make sure your board is set to the Arduino Uno in the 'Tool->Board' menu and the serial port is selected correctly in 'Tool->Serial Port'. 3. Connect your Arduino Uno to your computer. Compile and upload GRBL to your Arduino.(Click the 'file' down-down menu, navigate to 'Examples->Grbl', and select 'GrblUpload') Open the 'GrblUpload' Arduino example.

zip file or the wrong folder, you will need to navigate to your Arduino library, delete the mistake, and re-do this step.)

IMPORTANT: Select the 'Grbl' folder inside the 'grbl-master' folder, which only contains the source files and an example directory.

(Click the 'Sketch' drop-down menu, then navigate to 'Include Library', and select 'Add.

Load GRBL into the Arduino IDE as a Library.

(Please make sure you are using the most recent version of the Arduino IDE.)

Unzip the download and you’ll have a folder called 'grbl-master'.

Plug the shield into an Arduino board and load the GRBL Firmware following the steps bellow: Do a visual check of all soldered points on the new boardĢ. #include ĪccelStepper motorX(1, MOTOR_X_STEP_PIN, MOTOR_X_DIR_PIN) ĪccelStepper motorY(1, MOTOR_Y_STEP_PIN, MOTOR_Y_DIR_PIN) ĪccelStepper motorZ(1, MOTOR_Z_STEP_PIN, MOTOR_Z_DIR_PIN) ĪccelStepper motorA(1, MOTOR_A_STEP_PIN, MOTOR_A_DIR_PIN) If you need a limit (home) switch for the A axis (as well as x, y, z), you will need to use one of the analog pins for the sensor.Īnd here is the test code from the link in the op modified to include the A axis. #define CW 0Ĭonst byte stepPin = 12 // x axis > 2, y axis > 3, z axis > 4 a axis > 12Ĭonst byte dirPin = 13 // x axis > 5, y axis > 6, z axis > 7 a axis > 13Ĭonst byte enablePin = 8 // enable on the CNC shield is held HIGH (disabled) by defaultĭigitalWrite(enablePin, LOW) // enable steppers That means that you no longer have the spindle enable or spindle direction control. You use the 4th motor (A) just like the other 3 except the step pin for the A is pin 12 and the dir pin is pin 13 once the jumpers are in place.

Arduino uno cnc shield v3 datasheet