ARDUINO CNC SHIELD V3.xx

GRBL 0.8c compatible. (Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals
4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins D12 and D13)
2 x End stops for each axis (6 in total)
Spindle, Coolant enable and direction
Uses removable A4988 compatible stepper drivers. (A4988, DRV8825 and others)
Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
Compact design
Stepper Motors can be connected with 4 pin molex connectors.
Runs on 12-36V DC (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)