3D Printer Accessories CNC Shield R3 Board A4988

3D Printer Accessories CNC Shield R3 Board A4988 Driver Kit With Heat Sink For Engraver 3D Printer
Features:CNC shield uses removable A4988 or DRV8825 compatible stepper drivers; the CNC shield extension board can be used for carving machine, 3D printer driver expansion board.
GRBL 0.8 compatible. (Open source firmware that runs on an board that turns G-code commands into stepper signals); PWM Spindle and direction pins,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).
Small size and compact design, Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
A4988 Stepper Motor Driver mixes with slow current decay modes; internal UVLO and low RDS (on) output.
Automatic current decay mode detection/selection; synchronous rectification for low power dissipation.

Specifications:
CNC Shield Board --
Version: 3.0
Color: red
Size: 6.8 * 5.3 * 1.8cm / 2.68 * 2.09 * 0.71in
VoltageL DC 12-36V (at the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)

A4988 Stepper Motor Driver --
Color: red
Size: 2 * 1.5 * 1cm / 0.79 * 0.59 * 0.39in
Thermal Shutdown Circuitry: yes
Crossover Fault Protection: yes
Load Short-Circuit Protection: yes
Compatible Logic Suppluy: 3.3V and 5V
Five Selection Step Modes:full, 1/2, 1/4, 1/8, 1/16
R3 Board--
Color: blue
Size: 6.8 * 5.3cm / 2.68 * 2.09in
Package Size: 15 * 11 * 4cm / 5.9 * 4.33 * 1.57in
Package Weight: 90g / 3.17oz

Note:
This is an unassembled kit and Basic soldering skills are needed.
Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver.

Package List:
1 * R3 Board
1 * CNC Shield Board
4 * A4988 Stepper Motor Driver
4 * Heat Sink
1 * USB Cable
1 * 40-Pin Row Needles