GRBLDuino Mega Shield Relay

This is a non-stock item and will ship in approximately 4 days after ordering.

GRBLDuino Mega Shield Relay is the first user friendly GRBL v1.1 compatible 3-axis Arduino CNC controller shield with spindle and coolant control relays.

Available in kit form, which requires soldering of standard through-hole components, or assembled and tested.

Features:

• Fits Arduino Mega (not included)
• Designed for Pololu DRV8825 stepper motor drivers (not included)
• Works with power supplies up to 45 volts DC
• Relays for up to 5 amps at 250v for spindle and coolant control
• Screw terminals for all machine control connections
• Dual end stop terminals for each X, Y, and Z axis - does not support auto-squaring
• High or low activation limit switches/end stops
• Emergency stop, abort, door safety, hold, and resume connections
• Spindle speed (PWM), enable, and direction connections
• Flood and mist coolant connections (relay controlled and non)
• Probe connection
• 3 axis capability
• Full microstepping control for each axis
• Genuine Nichicon capacitors

To have a complete CNC machine, you also need:

• 1 control computer (to send G code to GRBL)
• 1 Arduino Mega running GRBL v1.1
• 1 stepper motor driver per axis (pin compatible with Pololu DRV8825)
• 1 stepper motor per axis
• 1 stepper motor power supply (max 45v DC)
• 1 spindle, pen, laser, drag knife
• 1 CNC machine structure

Find more details including schematics, parts lists, and tutorials at the blog.

Colors may vary. Arduino not included. Stepper drivers not included.