Brushless Motor Driver Controller Board for Hard Drive BLDC Motor DC 7-12V

This DC 7-12V Brushless Motor Driver Controller Board is a compact and purpose-built solution for driving the small brushless motors found in hard disk drives (HDD) and similar compact BLDC motors. Unlike general-purpose motor drivers, this board is specifically optimized for the 3-wire and 4-wire sensorless brushless motors commonly salvaged from hard drives, CD/DVD drives, and cooling fans, making it a perfect choice for motor reuse and DIY projects.

The board features automatic motor wire detection, intelligently identifying whether a 3-wire or 4-wire brushless motor is connected and adjusting its commutation accordingly. For 4-wire motors, the driver can automatically identify the common (COM) terminal, eliminating complex manual wiring. Speed is directly controlled by the input voltage, with higher voltages producing faster rotation speeds of up to approximately 10,000 RPM under optimal conditions.

Built-in protection circuits including reverse polarity protection, over-current protection, and short circuit protection make this board safe and reliable for extended use. The simple plug-and-play design requires minimal setup, making it ideal for hobbyists, students, and makers exploring brushless motor control, DIY spinning projects, homemade fans, centrifuges, and experimental robotics. Whether you’re repurposing salvaged hard drive motors or building a custom high-speed spinning device, this driver board provides the simplest and most reliable control solution available.

Specification :

• Input Voltage: DC 7V – 12V
• Working Current: ≤ 1.2A
• Output Current: 1.5A maximum
• Compatible Motor Types: 3-wire and 4-wire sensorless brushless DC motors
• Primary Application: Hard drive motors, CD/DVD drive motors, cooling fan motors
• Speed Control: Voltage-based (higher voltage = higher speed)
• Speed Range: 0% – 100% (variable via supply voltage)
• Maximum Speed: ~10,000 RPM (voltage dependent)
• Motor Wire Detection: Automatic 3-wire/4-wire detection
• COM Terminal Detection: Automatic identification for 4-wire motors
• Protection: Reverse polarity, over-current, short circuit protection
• PCB Color: Green and Black
• Board Dimensions: 63mm × 45mm
• Operating Temperature: -20°C to +60°C
• Mounting: Onboard mounting holes
• Applications: HDD motor recovery projects, DIY fans, centrifuges, experimental robotics