The PWM DC Motor Speed Controller Module is a compact Pulse Width Modulation (PWM) controller designed to adjust the speed of DC motors without significantly reducing torque. It features an onboard rotary potentiometer for smooth speed adjustment and is ideal for DC motors, cooling fans, pumps, robotics, Arduino projects, and DIY electronics.
Features
- Full Name: PWM DC Motor Speed Controller Module
- PWM speed control technology
- Smooth and precise speed adjustment
- High efficiency with low heat generation
- Rotary potentiometer with ON/OFF switch
- Compact PCB design
- Easy screw terminal connections
- Suitable for brushed DC motors
Specifications
| Specification | Value |
|---|---|
| Product Type | PWM DC Motor Speed Controller |
| Operating Voltage | 6V – 28V DC |
| Maximum Output Current | 3A (Continuous) |
| Maximum Output Power | 80W |
| PWM Frequency | Approx. 16 kHz |
| Speed Control Range | 0% – 100% |
| Efficiency | Up to 95% |
| Control Method | PWM (Pulse Width Modulation) |
| Input/Output Connection | Screw Terminal Block |
Pin Configuration
| Terminal | Description |
|---|---|
| IN+ | Positive DC Input |
| IN− | Negative DC Input |
| OUT+ | Positive Motor Output |
| OUT− | Negative Motor Output |
Note: Connect the DC power supply to IN+ and IN−, and connect the motor to OUT+ and OUT−. Rotating the knob adjusts the motor speed.
Applications
- DC motor speed control
- Cooling fan speed control
- Water pumps
- Mini electric drills
- Robotics projects
- Arduino and ESP32 projects
- DIY automation
- Small conveyor systems
- Educational electronics projects
Advantages
- Smooth speed regulation
- Maintains motor torque at lower speeds
- High efficiency with low power loss
- Compact and lightweight
- Easy installation
- Reliable performance
- Cost-effective solution
Size
| Specification | Value |
|---|---|
| PCB Dimensions | Approx. 32 × 32 mm |
| Knob Diameter | Approx. 20 mm |
| Weight | Approx. 25 g |
Package Includes
- 1 × PWM DC Motor Speed Controller Module
Note: This controller is designed for brushed DC motors only and is not suitable for AC motors or brushless DC (BLDC) motors. Ensure that the supply voltage, motor current, and power requirements are within the module’s specified ratings to prevent damage and ensure reliable operation.






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