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grbl-teensy-4 is a motion controller based on the GRBL/HAL Teensy 4 (imxrt1062) port.

Current Status:

Version 1.0 Design is finalized. First batch of PCBs received. Design verified and bench testing completed. Minor changes made for V1.01. Awaiting stress testing in an actual mill.

Design features:

• 5 external stepper drivers supported.
• External interfaces 5V minimum.
• 3 Axis limit switch optoisolator interface.
• Cycle/Start, Feed/Hold, Door and Halt support via an optoisolator interface.
• Spindle on/off, PWM, direction and 0-10V interfaces.
• Flood and Mist coolant relay drivers.
• Vacuum relay driver slaved to Spindle on/off
• 3 additional relay drivers.
• Selectable relay voltage - 5 and 12V.
• I2C interface (3.3V).
• EEPROM (24LC SOIC footprint).
• Screw Terminals for secure wiring.