1. Introduction
The Walfront High-Performance 15A Dual-Channel DC Motor Controller Board is designed for precise and efficient control of two independent DC motors. This robust electronic component features an integrated brake function, making it suitable for a wide range of applications including industrial automation, robotics, drones, remote-controlled vehicles, and various DIY electronic projects. This manual provides essential information for safe and effective use of the motor controller board.
2. Safety Information
Please read and understand all safety instructions before operating this device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Power Disconnection: Always disconnect the power supply before performing any installation, wiring, or maintenance on the motor controller board.
- Correct Polarity: Ensure all power and motor connections are made with correct polarity. Incorrect wiring can damage the board and connected components.
- Avoid Short Circuits: Prevent short circuits between terminals or components. Use appropriate insulation and ensure wires are securely connected.
- Operating Limits: Operate the board strictly within its specified voltage and current limits to prevent overheating and damage.
- Environmental Conditions: Keep the board away from moisture, water, dust, and extreme temperatures. Operate in a well-ventilated area.
- Professional Installation: If you are unfamiliar with electronic wiring, seek assistance from a qualified professional.
3. Product Features
- Dual-Channel Control: Independently controls two DC motors.
- High Current Capacity: Supports up to 15A per channel, suitable for various motor sizes.
- Integrated Brake Function: Allows for quick stopping and holding of motors.
- Wide Application Range: Ideal for robotics, automation, drones, and DIY projects.
- Compact Design: Space-efficient for integration into various systems.
4. Specifications
| Specification | Value |
|---|---|
| Model Number | Walfrontgdoifwqc2u |
| Maximum Current | 15A (per channel) |
| Channels | Dual |
| Brake Function | Yes |
| Item Weight | 50 g |
| Package Dimensions | 14.4 x 11.4 x 2.3 cm |
| Battery Usage | No |
5. Setup
Follow these steps to correctly set up your Walfront DC Motor Controller Board:
- Identify Terminals: Locate the power input terminals (POWER, GND), motor output terminals (MOTOR1, MOTOR2), and control signal input pins (GND, PWM1, DIR1, PWM2, DIR2, +5V).
- Power Supply Connection: Connect your DC power supply to the POWER and GND terminals. Ensure the voltage is within the board's operating range and the polarity is correct.
- Motor Connection: Connect your DC motors to the MOTOR1 and MOTOR2 terminals. Each motor requires two connections.
- Control Signal Connection: Connect your microcontroller or control source to the signal input pins.
- Connect the common ground of your control source to the GND pin.
- For Motor 1: Connect PWM1 for speed control and DIR1 for direction control.
- For Motor 2: Connect PWM2 for speed control and DIR2 for direction control.
- The +5V pin can be used to power external low-current components if needed, but ensure not to exceed its current rating.
- Initial Check: Before applying full power, double-check all connections for correctness and security.
6. Operating Instructions
The Walfront DC Motor Controller Board uses Pulse Width Modulation (PWM) for speed control and digital signals for direction and brake functions.
- Direction Control (DIR1/DIR2): Apply a HIGH or LOW digital signal to the DIR pin for each motor to set its rotation direction. For example, HIGH for forward and LOW for reverse (or vice-versa, depending on motor wiring).
- Speed Control (PWM1/PWM2): Apply a PWM signal to the PWM pin for each motor. The duty cycle of the PWM signal determines the motor's speed. A higher duty cycle results in higher speed.
- Brake Function: The brake function is typically engaged when both direction pins for a motor are set to the same state (e.g., both HIGH or both LOW), or when the PWM signal is set to 0% duty cycle while direction pins are active. Refer to your specific control logic for implementation.
- Example Control Logic (Conceptual):
- Motor Forward: DIR = HIGH, PWM = 50% duty cycle.
- Motor Reverse: DIR = LOW, PWM = 50% duty cycle.
- Motor Stop (Freewheel): PWM = 0% duty cycle.
- Motor Stop (Brake): DIR = HIGH, PWM = 0% duty cycle (or both DIR pins HIGH/LOW if using a different control scheme).
7. Maintenance
Proper maintenance ensures the longevity and reliable operation of your motor controller board.
- Keep Clean: Regularly inspect the board for dust, debris, or foreign objects. Use a soft, dry brush or compressed air to clean.
- Keep Dry: Ensure the board remains in a dry environment to prevent corrosion and electrical shorts.
- Inspect Connections: Periodically check all wire connections to ensure they are secure and free from damage or corrosion.
- Heat Dissipation: Ensure adequate airflow around the board, especially during high-current operation, to prevent overheating of components.
8. Troubleshooting
If you encounter issues with your motor controller board, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not moving | No power to the board Incorrect motor wiring No control signal (PWM/DIR) Motor fault | Check power supply connection and voltage Verify motor connections and polarity Ensure control signals are active and correct Test motor independently |
| Motor moving erratically | Unstable power supply Noisy control signals Loose connections | Use a stable power supply with sufficient current capacity Ensure clean control signals; add decoupling capacitors if necessary Check all wiring for secure connections |
| Board or components overheating | Excessive motor load Short circuit Insufficient heat dissipation Operating beyond current limits | Reduce motor load Inspect for short circuits Ensure adequate ventilation; consider adding a heatsink if necessary Verify motor current draw is within 15A limit |
| Motor only moves in one direction | Incorrect DIR pin wiring DIR signal not changing state | Verify DIR pin connections Check control code or signal source for proper DIR signal toggling |
9. Warranty and Support
For warranty information, technical assistance, or further inquiries regarding the Walfront High-Performance 15A Dual-Channel DC Motor Controller Board, please contact Walfront customer service or refer to the official Walfront website. Please have your model number (Walfrontgdoifwqc2u) and purchase details available when seeking support.
