Product Information
- PWM spindle and direction pins, support 4‑axis (X, Y, Z, A ‑ you can copy X, Y, Z or use the pin of D12 and D13 to custom firmware to perform the complete 4).
- Compact structure, stepper motors can be connected to 4 pin connectors or soldered.
- This is a set of disassembled parts and you need basic soldering techniques to solder them together.
- The expansion board can be used as engraving machine, 3D printer and other drive expansion board.
- Compatible with GRBL 0.8. Open source firmware running on for that converts G code commands into stepped signals.

















