OSOYOO CNC Engraver Shield Expansion Board + UNO R3 Board + 4PCS A4988 Step Motor Driver with Heatsink Kit for Arduino 3D Printer

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CNC Shield Board: (learn more information, pls go to the ASIN: B0157ZZ28M)

Arduino UNO R3 Board:

MCU: ATmega328

USB interface: ATmega16U2

Operating voltage: 5V

Digital I/O pins: 14 (including 6 with PWM capability)

Analog input pins: 6

I-I/O pin output current: 40mA max

3.3V output current: 150mA max

Flash memory: 32 kB (0.5kB used by bootloader – included)

Static RAM (SRAM): 2 kB


Clock speed: 16MHz

A4988 Stepper Motor Driver:

A4988 Stepper Motor Driver Board is a breakout board for Allegro’s A4988 DMOS Micro stepping Driver with Translator and Overcurrent Protection; please read the A4988 datasheet carefully before using this product.

Low RDS (On) Output

Automatic current decay mode detection / selection

Mix with slow current decay modes

Synchronous rectification for low power dissipation

Internal UVLO

Crossover-current protection

3.3 and 5 V compatible logic supply

Thermal shutdown circuitry

Ground fault protection

Load short-circuit protection

Five selectable step modes: full, 1/2, 1/4, 1/8 and 1/16

Warning: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver. (More generally, rewiring anything while it is powered is asking for trouble).

Package includes:

1x CNC Shield Board

1x Arduino UNO R3 Board

4x A4988 Stepper Motor DriverLatest Arduino CNC Shield Version 3.0