HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller
HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller
HG7881 H-Bridge 4-Channel DC Stepper Motor Driver Controller
Drive up to 4 DC motors or 2 stepper motors with this compact, affordable HG7881-based H-bridge motor driver board. Ideal for robotics, automation, and Arduino/Raspberry Pi projects, it delivers reliable bidirectional motor control with simple logic-level inputs. Available now from The Tech Depot, Bengaluru - fast shipping, 7-day warranty on manufacturing defects, and expert support.
Specifications
| Driver IC | HG7881 (HG7881CP) Dual H-Bridge x 2 |
| Motor Channels | 4 DC motors (independent) or 2 stepper motors |
| Operating Voltage | 2.5 V - 12 V DC |
| Max Continuous Current | 800 mA per channel |
| Peak Current | Up to 1.5 A per channel (short duration) |
| Control Inputs | 2 pins per channel (IN-A direction, IN-B PWM/enable) |
| Logic Voltage | 3.3 V / 5 V compatible (Arduino, ESP32, Raspberry Pi) |
| Motor Control Modes | Forward, Reverse, Brake, Coast (per channel) |
| PWM Speed Control | Yes - via IN-B pin on each channel |
| Board Dimensions | Approx. 26 mm x 21 mm x 15 mm (compact form factor) |
| Connector Type | 2.54 mm pin headers for motor outputs and control inputs |
| Protection | Built-in flyback diodes for back-EMF protection |
| Weight | ~8 g |
| Type | Motor Driver Module |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- 4-Channel Independent Control: Drive four DC motors simultaneously with individual direction and speed control, or pair channels to run two bipolar/unipolar stepper motors.
- Wide Voltage Range (2.5 V - 12 V): Compatible with small hobby motors, N20 gear motors, TT motors, and many 12 V motors used in robotics platforms.
- PWM Speed Control: Smoothly vary motor speed from 0-100 % using PWM signals on the IN-B pin of each channel - works seamlessly with Arduino analogWrite().
- 3.3 V & 5 V Logic Compatible: Direct connection to Arduino Uno, Mega, Nano, ESP8266, ESP32, STM32, Raspberry Pi, and other popular microcontrollers without level shifters.
- Ultra-Compact Design: Tiny PCB footprint makes it easy to fit inside small robots, RC cars, and space-constrained enclosures.
- Built-In Back-EMF Protection: Integrated flyback diodes safeguard the driver IC and your microcontroller from voltage spikes generated by motor coils.
- Simple 2-Pin Control Per Channel: No complex wiring - just connect IN-A (direction) and IN-B (PWM/enable) per motor channel for full bidirectional control.
- Low Dropout Design: Minimal voltage drop across the H-bridge ensures maximum power delivery to your motors.
- Breadboard & PCB Friendly: Standard 2.54 mm pin headers allow direct insertion into breadboards or soldering onto custom PCBs.
Why Choose This Motor Driver?
- Budget-Friendly Multi-Motor Control: Control up to 4 motors with a single, low-cost module - significantly cheaper than L298N or L293D alternatives for light-duty applications.
- Perfect for Small Robotics: Designed for TT motors, N20 gear motors, and small DC motors commonly used in line-following robots, obstacle-avoiding bots, and wheeled platforms.
- 100% Authentic: Sourced directly from trusted, authorized component suppliers - no counterfeit ICs.
- 1-5 days shipping: Ships from our Bengaluru warehouse to most locations across India. Same-day delivery available in Bengaluru.
- Expert Technical Support: Stuck on wiring or code? Our engineers provide free guidance via email and WhatsApp around the clock.
- Extensive Community Resources: Thousands of Arduino tutorials, wiring diagrams, and sample code available online for the HG7881 driver.
Pin Configuration & Wiring Guide
| Pin Label | Function | Description |
| B-IA | Motor B Input A | Direction control (HIGH/LOW) |
| B-IB | Motor B Input B | PWM |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller Online in India
Purchase the HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy HG7881 H-bridge 4 Channel DC Stepper Motor Driver Controller at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.