The 4.5V to 35V PWM DC Motor Speed Controller is a compact and efficient speed regulation module designed for controlling the speed and direction of DC motors using Pulse Width Modulation (PWM) technology. This controller provides smooth and precise motor speed adjustment with minimal power loss, making it ideal for robotics, DIY electronics, automation systems, and motor-driven projects.

Supporting a wide operating voltage range from 4.5V to 35V DC, this module can deliver up to 5A continuous current and handle loads up to 90W. The PWM duty cycle is adjustable from 1% to 100%, allowing accurate speed control for motors, fans, pumps, LED dimming, and other DC loads.

Operating at a high PWM frequency of 20kHz, the controller ensures quiet motor operation and efficient performance. Its compact size and lightweight design make it suitable for portable electronics, embedded systems, and space-constrained installations.

This PWM speed controller is widely used in Bangladesh for DC motor projects, robotics, automation systems, mini electric vehicles, and DIY engineering applications.

Features:

• Adjustable PWM DC motor speed controller module

• Wide operating voltage range from 4.5V to 35V DC

• Supports up to 5A continuous output current

• Maximum output power up to 90W

• Smooth speed adjustment from 1% to 100% duty cycle

• High PWM frequency of 20kHz for silent motor operation

• Efficient PWM control minimizes power loss and heating

• Compact and lightweight design for easy installation

• Suitable for DC motors, fans, pumps, and LED dimming

• Stable performance for robotics and automation projects

• Low standby current consumption

• Easy to integrate into DIY electronics systems

Specifications:

• Working Voltage: DC 4.5V – 35V

• Output Current: 0 – 5A

• Maximum Output Power: 90W

• PWM Duty Cycle: 1% – 100% adjustable

• PWM Frequency: 20kHz

• Quiescent Current: 7µA (standby)

• Dimensions: 30mm × 26mm × 14mm

• Weight: Approx. 13g

How to Use:

• Connect the input terminals to a suitable DC power supply

• Connect the DC motor or load to the output terminals

• Turn the potentiometer knob to adjust motor speed

• Increase duty cycle for higher speed and reduce for slower speed

• Ensure the motor voltage matches the input supply voltage

• Avoid exceeding 5A load current for safe operation

• Use proper heat dissipation for high-power applications

• Disconnect power before wiring adjustments

Applications:

• DC motor speed control

• Robotics and automation projects

• Mini electric vehicles and DIY machines

• Cooling fan speed regulation

• Water pump flow control

• LED brightness adjustment

• Conveyor and mechanical systems

• Electronics laboratory projects

• DIY engineering and embedded systems

Package Includes:

• 1 × PWM DC Motor Speed Controller Module

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