EUROLIGHT A4988 35V 2A is a compact stepper motor driver module compatible with Pololu-style boards, designed to control bipolar stepper motors with microstepping capability. The module supports supply voltages up to 35V and continuous motor current up to 2A with appropriate cooling, and exposes standard control pins for STEP, DIR and ENABLE for easy integration with microcontrollers and motion control systems. The board includes current limiting, adjustable microstepping settings and built-in protection features that make it suitable for a range of small automation and motion control applications.
Advantages
The EUROLIGHT A4988 driver offers precise microstepping control and straightforward pinout compatibility with common Pololu-style sockets, simplifying replacements or upgrades. Adjustable current limiting allows tuning to match motor specifications and to reduce heat generation. Compact size and standard control signals make the module easy to integrate into CNC devices, 3D printers, robotics platforms and custom automation projects. The built-in protection circuits help protect the driver and motor under typical operating conditions.
Suitable for
- CNC routers and small milling machines
- 3D printers and filaments extruder drives
- Robotics and automated positioning systems
- Laboratory equipment and prototyping projects
- Any project requiring bipolar stepper motor control with microstepping
Key specifications
- Maximum supply voltage: up to 35 V
- Maximum continuous motor current: up to 2 A per coil (with adequate cooling)
- Microstepping: full, half, quarter, eighth (configurable via MS1–MS3 pins)
- Control interface: STEP, DIRECTION, ENABLE pins
- Protection: overcurrent and thermal shutdown features
- Form factor: Pololu-compatible module footprint for standard headers
How to use
Connect the motor coils and supply voltage according to the module pinout, ensuring the supply voltage does not exceed 35 V. Use the onboard potentiometer to set the current limit to match the motor’s rated current, and configure microstepping by setting the MS1–MS3 pins to the desired pattern. Drive the module from a microcontroller or motion controller using STEP pulses to advance steps and a DIRECTION signal to set rotation sense; the ENABLE pin can be used to disable the outputs when idle. Observe proper heat dissipation: if operating near current limits, provide a heatsink or airflow to maintain safe module temperature.
Usage recommendations
Verify motor coil resistance and rated current before setting the current limit, start with lower current settings and increase as needed while monitoring temperature. Ensure common ground between controller and driver, use decoupling capacitors on the supply rail, and avoid exceeding the voltage and current ratings. For sustained high-current operation, add a heatsink and maintain airflow to prevent thermal shutdown.
