PWM DC Motor Speed Controller with Digital Display (5 to 30VDC) – 5 to 15A 360W

The PWM DC Motor Speed Controller with Digital Display is a high-power, adjustable speed control module designed for DC motors, LED dimming, and other PWM-controlled loads. It operates from a 5V to 30V DC supply and handles 5A to 15A of continuous current (up to 360W), making it suitable for a wide range of motorized projects, automation systems, and DIY applications. The digital display provides real-time readout of the PWM duty cycle or voltage, allowing precise, repeatable speed control.

At the heart of the module is a high-frequency PWM (Pulse Width Modulation) control circuit that adjusts the average voltage delivered to the motor by rapidly switching the output on and off. This method is far more efficient than resistive speed control, generating less heat and providing better torque at low speeds. The PWM frequency is typically 15kHz–20kHz, which is above the audible range for most people, ensuring quiet motor operation.

The digital display shows the current PWM duty cycle (0–100%) or output voltage, depending on the mode. A rotary knob or push buttons allow precise adjustment of the speed. The module also includes a power switch and reverse polarity protection for safe operation.

The 5V to 30V input range makes the controller compatible with a broad range of power sources including:

• 12V and 24V battery systems

• 12V and 24V power adapters

• Solar panels and battery banks

• Bench power supplies

The 5A to 15A current rating (variant dependent) provides ample power for:

• DC motors — Brushed motors up to 360W

• LED lighting — Dimming for high-power LED arrays

• Heating elements — PWM control for resistive heaters

• Solenoids and actuators — Duty cycle control

The module features screw terminals for secure input and output connections, and the compact PCB design with mounting holes allows easy integration into control panels, equipment enclosures, and custom projects. The digital display and control knob are panel-mountable for convenient front-panel access.

The module is widely used in motorized projects, robotics, CNC machines, conveyor systems, LED lighting, automotive electronics, and industrial control. It is also popular in educational projects for teaching PWM, motor control, and power electronics.

Important Note: The module requires the input voltage to be within the 5V to 30V DC range. The maximum output current depends on the specific variant (5A, 10A, or 15A). Ensure your power supply can deliver sufficient current for your load. For inductive loads such as motors, keep the load current below 80% of the rated value for reliable operation. The module should be mounted with adequate ventilation for high-power operation.

Whether you are building a variable-speed motorized project, dimming high-power LEDs, or controlling a heating element, the PWM DC Motor Speed Controller with Digital Display provides a reliable, precise solution. It is suitable for individual makers, engineers, and businesses purchasing in bulk for product development or industrial applications.

Features

• PWM speed control — Efficient, precise motor speed regulation

• Digital display — Real-time readout of duty cycle or voltage

• Wide input voltage range — 5V to 30V DC

• High current capability — 5A to 15A (variant dependent)

• Up to 360W output power — Suitable for high-power motors and loads

• High PWM frequency — 15kHz–20kHz for quiet operation

• Rotary knob or push-button control — Precise speed adjustment

• Reverse polarity protection — Protects against input miswiring

• Screw terminals — Secure input and output connections

• Compact PCB design — With mounting holes for easy integration

• Wide application range — DC motors, LED dimming, heating elements, solenoids

Technical Specifications