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Description: 1. The HG7881 is a versatile 4-channel DC-2-channel stepper motor driver board designed for various IoT projects and applications. 2. It features four fully independent half-bridge drivers that can handle a maximum voltage of 35V and current up to 6A per channel, allowing operation with a wide range of DC motors and stepper motors. 3. The board provides two additional channels for operating bipolar or unipolar stepper motors with adjustable current control for each phase (2-18 Ohms) for precise motor movement. 4. The HG7881 includes an adjustable micro-stepping mode, which supports full-step, half-step, and 1/4th stepping modes to produce finer motor movements and improve accuracy. 5. This driver board comes with built-in over-current protection, over-voltage protection, thermal protection, and short-circuit protection to ensure safe operation under different conditions. 6. It has a compact size (103mm x 70mm) and easy-to-use interface, making it suitable for various DIY projects
| Specification | Details |
|---|---|
| Driver Type | Dual H-Bridge 4-Channel |
| Motor Support | DC Motors Stepper Motors |
| Output Current | Up to 2A per Channel (peak) |
| Voltage Rating | Input: 5V to 36V; Output: 0.8V to VCC |
| Channel Control | PWM 1-100% Duty Cycle |
| Stepper Motor Control | Microstep Resolution: Full Half Quarter |
| Communication | UART (serial) |
| Operating Temperature | -40°C to 85°C |
| PCB Size | 80mm x 60mm |
| Weight | Approximately 20g |
| Connectors | 2x USB headers 1x UART header |
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