Product Review

CNC Shield Board:
1>PWM Spindle and direction pins
2>2 x End stops for each axis (6 in total)
3>Coolant enable
4>Uses removable A4988 or DRV8825 compatible stepper drivers
5>Compact design
6>Stepper Motors can be connected with 4 pin molex connectors or soldered in place
7>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.)
8>Please note that this is an unassembled kit and Basic soldering skills are needed

DRV8825 Stepper Motor Driver:
1)*Suitable for driving below 8.2V ~ 45V 2.5A stepper motor 
2)*Six different stepping resolutions: full, half, 1 / 4,1 / 8,1 / 16,1 / 32. 
3)*A simple steps and direction control interface. 
4)*Adjustable potentiometer can adjust the maximum output current, resulting in higher step rate. 
5)*Automatic current decay mode detection / selection. 
6)*Thermal shutdown circuit, undervoltage lockout, crossover current protection. 
7)*Ground short-circuit protection and load short-circuit protection. 
8)*DRV8825:20*15*11mm/approx 0.79*0.59*0.43inch(L-W-H) . 
9)*Heat Sink: 9*9*5mm/approx 0.35*0.35*0.2inch(L-W-H). 
10)*Net weight: 4g/approx 0.008oz./pcs.

Package:
1 x CNC Shield Board
4 x DRV8825 Stepper Motor Driver
4 x Mini Heat Sink