This shield is designed to allow you to control a CNC router or milling machine from an Arduino board. It contains 4 driver sockets which allows compatible A4988 driver modules to be inserted providing the ability to drive 3 stepper motor axis (XY& Z) plus an optional 4th auxiliary motor. Additional connectors provide easy connection of end stop sensors and control buttons.
CNC Shield Board Features:
- GRBL 0.8c compatible. (Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals).
- 4-Axis support (XYZA-Can duplicate XYZ or do a full 4th axis with custom firmware using pins D12 and D13).
- Open source firmware that runs on an UNO for Arduino that turns G-code commands into stepper signals
- Jumpers to set the Micro-Stepping for the stepper drivers.
- Endstop connections.
- 12-36V input current.
- X, Y, Z axis and extruder stepper motor control.
A4988 Stepper Motor Driver Features:
- Automatic current decay mode detection / selection.
- Internal UVLO.
- Mixed with slow current decay modes.
- Synchronous rectification for low power dissipation.
- Crossover-current protection.
- Thermal shutdown circuitry.
- 3.3 and 5 V compatible logic supply.
- Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step.
- Output drive capacity of up to 35 V and ± 1.2 A
- Thermal shutdown circuitry.
- Ground Fault Circuit.
- Load short-circuit protection.
- Adjustable current control lets you set the maximum current output with a potentiometer.