R&D CNC Shield Expansion V3.0 UNO R3 Board Drv8825 Stepper Motor Driver Heatsink Electronic Components Electronic Hobby Kit

1 x CNC Shield Board 1 x UNO R3 Board for iduino 4 x drv8825 Stepper Motor Driver 4 x Heat Sink. This expansion board as a driver expansion board, can be used for engraving machines, 3d printers. It has total of four slots, can drive four a4988 stepper motor. Each stepper motor only need two io ports. In other words, six io ports can be well managed for three stepper motors. Very convenient to use. Latest arduino cnc shield version 3. 03grbl 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 enable and direction coolant enable uses removable pololu 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).