The CNC Expansion Board is an Arduino compatible board suitable for CNC projects of controlling up to four stepper motors by using four A4988 stepper motor driver boards(not included). The board’s pinout is compatible with open source CNC control firmware Grbl. The shield allows external power supply upto 36V for powering powerful motors, Also has the pins for setting up end stops, hold & resume operation.
Supply Voltage: Up to 36 V(depends on driver)
4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins A4 and A3)
2 x End stops for each axis (6 in total) + one Probe