85W 12V High Speed Brushless Vacuum Blower Motor with Built-in Driver & PWM Control

Specifications

• Motor Type: High-Speed Brushless Vacuum Blower (Integrated Driver)

• Operating Voltage: 12V DC

• Rated Power: 85W

• Estimated Current Draw: ~7.1A (at maximum load)

• Speed Control: 5V PWM Signal (1KHz frequency)

• Speed Feedback: FG Signal output

• Power Wiring: Thick Red (12V+), Thick Black (GND)

• Logic Wiring (4-Pin): Thin Red (EN / Enable), Thin Green (PWM Input), Thin White (FG Output), Thin Black (Logic GND)

• Direction: Single direction (Impeller optimised for forward suction)

Key Applications and Projects

• DIY Smart Robotic Vacuums: Using the 12V rating to run directly off a 3S LiPo battery, while using the Arduino PWM to throttle suction based on carpet vs. hard floors.

• Solder Fume Extractors: Creating a high-static-pressure desktop extractor that actually pulls heavy solder smoke through a dense carbon filter.

• Workbench Dust Collection: Hooking the motor up to a mini cyclone separator to suck up CNC router dust or 3D printer debris.

Unlock New Capabilities (Project Evolution)

• The Smart Automated Solder Fume Extractor: Breathing flux fumes is terrible for your lungs. Build the ultimate workbench extractor! Mount this high-speed motor inside a 3D-printed enclosure with a carbon filter. Connect the Green PWM wire to an Arduino, and wire an MQ-135 Air Quality Sensor. When the sensor detects smoke from your soldering iron, the Arduino can automatically wake the motor up via the EN pin and ramp the PWM signal to maximum suction, clearing your workspace instantly!

Package Includes:

• 1 x 85W 12V High Speed Vacuum Brushless Motor

• 1 x Pre-attached Wiring Harness (Thick Power + 4-Pin Logic)

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What is the operating voltage? The main power input requires a 12V DC power supply.

2. How much power does it draw? It is rated for 85 Watts, which means it will pull just over 7 Amps of continuous current at 12V. You should use a power supply rated for at least 10A to handle startup spikes.

3. Do I need to buy an external ESC? No, the brushless motor driver board is fully integrated into the white casing.

4. What are the thick Red and Black wires for? They are the main power inputs. Thick Red goes to 12V Positive, and Thick Black goes to 12V Negative (Ground).

5. How do I control the speed? The thin Green wire accepts a 5V PWM (Pulse Width Modulation) signal at a frequency of 1KHz to throttle the speed.

6. How do I make it run at maximum speed without an Arduino? According to the wiring diagram, if you want it to run constantly at its highest speed, you can pull the PWM line high by connecting a 10K resistor between the Green wire and a 5V positive logic source.

7. What does the thin Red (EN) wire do? It is the Enable pin. Applying a logic high signal turns the internal driver on, allowing the motor to spin.

8. What is the thin White (FG) wire? It provides Speed Feedback. It pulses as the motor spins, allowing a microcontroller to calculate the exact RPM.

9. Can I run this on 24V? No, it is specifically rated for a 12V system. 24V will destroy the integrated driver board.

10. Is this a vacuum or a blower? It does both! It sucks air forcefully into the front central hole and exhausts it forcefully out the rear ventilation holes.

11. Is it waterproof? No. The motor, internal circuit board, and exhaust vents are completely exposed. Sucking up water will cause an immediate short circuit.

12. Is it loud? Yes. Because it relies on extremely high RPMs to generate 85W of static pressure, it produces a loud, high-pitched vacuum whine during operation.

13. Can I use this for an RC hovercraft? Yes, it is an excellent choice for a DIY hovercraft skirt-inflation fan due to its high static pressure and built-in driver.

14. What are the connectors on the ends of the thick wires? They are pre-crimped female spade/bullet-style quick disconnect terminals.

15. Does the motor get hot? Yes, 85W generates heat. However, the motor is designed so that the massive volume of air it pulls through the casing actively cools the internal coils and circuit board.

16. Can I reverse the direction of the airflow? No. The physical impeller blades are curved to push air efficiently in one direction only. Reversing it electronically (if even supported by the board) would result in practically zero airflow.

17. What is the casing made from? The outer shroud is constructed from a lightweight, durable injection-molded plastic.

18. Can I run this from a 3S LiPo battery? Yes! A 3S LiPo provides 11.1V (12.6V fully charged), which is perfect for this 12V motor, making it great for portable robotic vacuums.

19. What size is the logic connector? It uses a standard 4-pin JST-style micro connector.

20. Can I 3D print a hose adapter for it? Absolutely. The cylindrical front profile features small mounting tabs and a central intake hole that is very easy to design a friction-fit or glued 3D-printed funnel for.