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KiCad 8.0KiCad
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DC Motor Speed Controller
💡 12V DC Motor Speed Controller – PCB Design using KiCAD
This project showcases a compact, efficient, and cost-effective DC motor speed controller based on Pulse Width Modulation (PWM) using the NE555 timer IC in astable mode. It uses a power MOSFET (IRFZ44N) to drive a 12V DC motor and is protected by a Schottky diode (SS14). The entire design is implemented in KiCAD and is ideal for DIY projects, robotics, and educational purposes.
✅ This is a pure hardware solution — no microcontroller or software programming is required.
🔧 Key Features
⚙️ PWM speed control for 12V DC motors
🎛️ Adjustable duty cycle using a potentiometer
📐 NE555 timer configured in astable mode to generate PWM
💪 IRFZ44N power MOSFET for efficient and high-current switching
🔄 Flyback diode (SS14) to protect against back EMF
🧾 2-layer PCB design using KiCAD
⚡ Designed for high efficiency and thermal reliability
DC Motor Speed Controller
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
For more important ordering information, please refer to
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- ✖ | No sharing or redistributing in any way of the 3D files or derivatives
- ✖ | No remixing
- ✖ | Non-commercial Use (only for personal use)
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