The KIT67 DC Motor Speed Controller Kit is a powerful DIY motor control solution designed to provide smooth, efficient speed regulation for a wide range of brushed DC motors. Ideal for students, hobbyists, technicians, and engineers, this kit demonstrates the principles of Pulse Width Modulation (PWM) while delivering reliable motor performance for educational, experimental, and practical applications.
Unlike simple resistor-based speed controllers that waste energy and reduce motor torque, the KIT67 uses PWM technology to regulate motor speed. By rapidly switching the motor supply on and off, the controller adjusts the average power delivered to the motor while maintaining excellent torque throughout the speed range. This results in higher efficiency, cooler operation, and improved motor performance, especially at lower speeds.
The PWM signal is generated by a dependable NE556 dual timer IC, which controls a high-current IRF530 MOSFET responsible for switching the motor load. This robust design allows the controller to regulate common brushed DC motors rated up to 100 V and 7 A, making it suitable for a wide variety of medium-power motor control applications.
The controller itself operates from a 5 V to 15 V DC supply, while the switching circuitry can control motors with supply voltages of up to 100 V DC, provided the motor current remains within the specified limits. An adjustable control allows users to vary the motor speed smoothly from low speed to full output, giving precise control over motor operation.
The completed unit is designed for convenient box mounting, making it suitable for installation into equipment, control panels, laboratory projects, robotics, model engineering applications, and workshop tools.
As a DIY electronics kit, the KIT67 provides valuable hands-on experience in soldering, PCB assembly, PWM motor control, MOSFET switching, and power electronics, making it an excellent educational project as well as a practical motor controller.
Features
Pulse Width Modulation (PWM) DC motor speed controller
Smooth adjustable motor speed control
Maintains high motor torque across the speed range
Controls brushed DC motors up to 100 V and 7 A
PWM generation using NE556 dual timer IC
High-current IRF530 MOSFET output stage
More efficient than resistor-based speed control
Compact design suitable for enclosure mounting
Excellent educational project for power electronics
DIY kit develops soldering and motor control skills
Ideal for hobby, laboratory, and industrial projects
Specifications
Product Code: KIT67
Device Type: DC Motor Speed Controller Kit
Function Group: Motor Control / Speed
Control Method: Pulse Width Modulation (PWM)
PWM Controller IC: NE556
Power Switching Device: IRF530 MOSFET
Controller Operating Voltage: 5-15 VDC
Maximum Motor Voltage: 100 VDC
Maximum Motor Current: 7 A
Speed Adjustment: Continuously variable
Motor Type: Brushed DC motors
Mounting: Box mounted
Construction: DIY electronic kit
PCB Type: Through-hole component assembly
Typical Applications: Robotics, model engineering, conveyor systems, workshop equipment, laboratory experiments, industrial control, educational electronics, automation projects, and general-purpose DC motor speed control.
What's in the box
1 x KIT67 PWM DC Motor Speed Controller Kit for 5-15V Control up to 100V 7A
