CNC V3 Shield with 4 A4988 Drivers
CNC Controller Shield
CNC V3 Shield with 4 A4988 Drivers
Complete Arduino-compatible motion control for 3D printers and milling machines.
The CNC V3 Shield is an all-in-one motion control solution combining an Arduino-compatible interface with four A4988 stepper motor drivers. It provides everything needed to drive CNC machines, 3D printers, or robotic systems with precision and reliability.
4
Axes
2A
Max Current per Axis
12-36V DC
Power Input
Key features
4-Axis Control
Supports X, Y, Z plus one additional axis
Integrated Drivers
Four replaceable A4988 stepper drivers
Microstepping
Up to 1/16 step resolution for smooth motion
Fan Control
Dedicated PWM output for cooling fan
Heat Management
Includes large heatsinks and fan connector
Endstop Inputs
Three-axis limit switch connectors
Technical specifications
Pinout
Applications
3D printers (Cartesian and CoreXY)
CNC routers and milling machines
Multi-axis robotic arms
Laser engravers and pen plotters
Pick-and-place machines
Automated test equipment
Hobbyist CNC projects
What's in the box
CNC V3 Shield board
4 × A4988 stepper driver modules
4 × heatsinks for drivers
Screw terminal blocks and pin headers
Downloads
Datasheet (PDF)
GRBL Configuration Guide
Schematic Diagram
Example Code (Arduino)
GRBL Settings Example
plaintext
$0=10 // Step pulse, microseconds
$1=25 // Step idle delay, milliseconds
$2=0 // Step port invert, mask
$3=0 // Direction port invert, mask
$4=0 // Step enable invert, boolean
$5=0 // Limit pins invert, boolean
$6=0 // Probe pin invert, boolean
$10=3 // Status report, mask
$11=0.010 // Junction deviation, mm
$12=0.002 // Arc tolerance, mm
$13=0 // Report inches, boolean
$20=0 // Soft limits, boolean
$21=0 // Hard limits, boolean
$22=0 // Homing cycle, boolean
$23=0 // Homing dir invert, mask
$24=25.000 // Homing feed, mm/min
$25=500.000 // Homing seek, mm/min
$26=250 // Homing debounce, milliseconds
$27=1.000 // Homing pull-off, mm
Always set the current limit on each A4988 driver using the VREF adjustment before powering motors; a typical setting for NEMA 17 (1.2A) is 0.96V. Use a multimeter to measure VREF between the potentiometer and GND.
