DIY Brushless Fan: 12V Car Vacuum Upgrade

If you are interested in DIY brushless fans, you might want to take a look at this article.

If you happen to have a mini car vacuum cleaner, but its small fan has very weak suction, you should not rush to throw it away.
You can keep the outer shell.
If you also happen to have a 10.8V 90W brushless fan whose size fits just right, note that the original device uses a single lithium battery.
You can modify it into a wired 12V car-powered device.
This brushless fan should be able to reach up to 120W.
A variable power supply with a maximum current limit of 8A can be used.
You only need to trim the inside of the housing so the parts fit properly.
The brushless fan can be powered directly at maximum speed.
It can also support PWM speed control.
If your car cigarette lighter port supports up to 120W, and you are worried about blowing the fuse, you can switch to PWM speed control.
After modification, you can try blocking the suction nozzle with your hand, and you will clearly feel strong suction.
The original device could hardly produce any noticeable suction.
And the noise is also much better than the original.

Trim the housing first

Add a PWM speed control module

Install the brushless fan

Solder the wires and car plug

Finished, it is still very simple.