GRBLControl board:be used forDIYmanufacture、Maintenance writing robot、Micro laser engraving machine and othersCNCHardware development，Receive through serial portGThe code works。coordinationA4988perhapsDRV8825Drive module，To drive the stepper motor。

This control board is well made、Advanced technology，Stable performance，Fully functional，Support doubleYDesign of shaft gantry structureNCequipment，Four axis output（XY1Y2Z）,laser output ，Three axis zero point sensor interface，Already5Secondary upgrade，It solves the problem of serious heating during operation、crash、Common problems of common control boards such as dropping data。

It will be tested before delivery，Please feel free to buy，provideGRBLfirmware。Now order a complimentary cooling fan。Kuixiang carving software is also sold。

Replace the 4988 drive directly into the motherboard

, output pulse and direction, enable signal

To step drive or servo drive

The four wires extracted by common cathode connection are respectively

: Red GND // Blue direction +// Green pulse +// Black enable +