Description: 1. Stepper Motor Driver Expansion Board is a microcontroller-controllable module designed for driving 2-phase stepper motors, ideal for use with 3D printers and other CNC machines. It comes with A4988 or 8825 microstepping drivers. 2. Compatibility: Suitable for Arduino, Raspberry Pi, and other single-board computers (SBCs) through UART interface. This makes it easy to integrate into various DIY projects. 3. Stepper Motor Control: Enables precise control of 42Nm stepper motors with a maximum current of 1.75A per phase, providing excellent torque and positioning accuracy for 3D printing applications. 4. Microstepping: Features microstepping capabilities up to 1/32th step (full-step, half-step, and 1/4, 1/8, 1/16, and 1/32 stepping modes) for smooth motor operation and finer control over motion. 5. Protection: Offers thermal protection, current limiting, and overvoltage protection to ensure safe and reliable motor operation. 6. Flexible Configuration: Provides various configuration
| Specification | Details |
|---|---|
| Motor Compatibility | 42-Step Bipolar/Unipolar |
| Driver Module | A4988 (default) or DRV8825 |
| Microcontroller Interface | SPI UART and Stepper Motor Control Pins |
| Power Supply | 12V DC (5V for Logic) |
| Current Rating | Up to 2A per Phase (4A Total) |
| Stepper Motor Step Angle | 1.8° (or 0.9° with Microstepping) |
| Voltage Range | 8-35V DC |
| Operating Temperature | -20°C to 85°C |
| Dimensions | 60mm x 55mm |
| Weight | Approximately 30g |
