V3.0 Engraver CNC Shield+R3 Board+4pcs A4988/DRV8825 Driver Expansion Board for 3D Printer Set Kit


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CNC Shield Board

Version: 3.0
Color: Red
Size(L*W*H): 68 x 53 x 18 mm
Voltage: DC 12~36 V (At the moment only the DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)

1. Uses removable A4988 or DRV8825 compatible stepper drivers.
2. The extension board can be used for carving machine, 3 d printer driver expansion board
3. GRBL 0.8 compatible. (Open source firmware that runs on an that turns G-code commands into stepper signals)
4. 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)
5. Compact design. Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
6. Please note that this is an unassembled kit and Basic soldering skills are needed.

– A4988 Stepper Motor Driver

Color: Red
Size(L*W*H): 20 x 15 x 10 mm
Thermal shutdown circuitry: Yes
Crossover-current protection: Yes
Ground fault protection: Yes
Load short-circuit protection: Yes
Compatible logic supply: 3.3V and 5 V
Five selectable step modes: full, 1/2, 1/4, 1/8 and 1/16

1. Mix with slow current decay modes.
2. Internal UVLO and Low RS (On) Output.
3. Automatic current decay mode detection/selection.
4. Synchronous rectification for low power dissipation.
5. Warning: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver.

DRV8825 Stepper Motor Driver

Color: Purple
Size(L*W*H): 20 x 15 x 10 mm
Driving current: 2.5A

Overheating Circuit Protection: Yes
Undervoltage Lockout: Yes
Cross Current Protection: Yes
Short circuit protection to ground: yes
Load Short Circuit Protection: Yes
Six selectable step modes: full, 1/2, 1/4, 1/8, 1/16, 1/32
1. Maximum current 2.5A
2. Support up to 32 subdivisions
3. 4-layer PCB board, better heat dissipation performance
4. The internal resistance of the chip is smaller, the heat generation is lower, and the heat dissipation is better

– R3 Board

MCU: ATmega328
Clock speed: 16 MHz
USB interface: ATmega16U2
Operating voltage: 5 V
I-I / O pin output current: 40 mA max
3.3 V output current: 150 mA max
Digital I/O pins: 14 (including 6 with PWM capability)
Analog input pins: 6
Static RAM (SRAM): 2 kB
Flash memory: 32 kB
Size(L*W*H): 68 x 53 x 10 mm
Package Include:

CNC Shield
R3 Board
A4988 Driver Kit

CNC Shield
R3 Board
DRV8825 Driver Kit

Additional information

Weight 0.091 kg

4988 Kit


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