https://github.com/mattvenn/simple-brushless
a cheap and simple educational brushless motor
https://github.com/mattvenn/simple-brushless
Last synced: about 2 months ago
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a cheap and simple educational brushless motor
- Host: GitHub
- URL: https://github.com/mattvenn/simple-brushless
- Owner: mattvenn
- Created: 2016-04-01T14:30:49.000Z (about 9 years ago)
- Default Branch: master
- Last Pushed: 2016-04-01T17:06:39.000Z (about 9 years ago)
- Last Synced: 2025-04-01T18:09:55.506Z (about 2 months ago)
- Size: 387 KB
- Stars: 13
- Watchers: 3
- Forks: 2
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# simple brushless motor
a cheap (<£10) and simple [educational brushless motor](http://www.youtube.com/watch?v=Y1PdwugfWUE), allowing adjustment of:
* number of magnets
* coil size and clearance
* sensor phase angle
* coil power timing
# BOM
## electrical
* P channel mosfet - capable of switching at least 1A
* Hall effect sensor
* copper wire for the coil - I used about 8m of 0.224mm copper wire, with an overall resistance of 3.8 Ohms
* 2 1n4001 diodes. D2 is the [flyback diode](https://en.wikipedia.org/wiki/Flyback_diode) that protects the mosfet when it switches off.
* 5k resistor
* 10 uF cap
* 10k potentiometer
## mechanical
* 10mm miniature bearing
* prototyping board
* [3d printed bobbin](4mm-bolt_motor2 v16_coil_1_Body1.stl)
* laser cut [rotor](rotor.dxf), [coil mount](mount.dxf) & [base plate](baseplate.dxf)
* magnets - I used 5mm cylindrical
# Links
* [video](http://www.youtube.com/watch?v=Y1PdwugfWUE), [blog post](http://www.mattvenn.net/2016/04/01/build-a-simple-brushless-motor/)
* [fusion360 motor model](http://a360.co/1SrSSEC)
* [Walter Lewin's physics lectures](https://www.youtube.com/playlist?list=PLyQSN7X0ro2314mKyUiOILaOC2hk6Pc3j)
* [lt spice](http://www.linear.com/designtools/software/) - [get started](http://hackaday.com/2016/02/26/adding-spice-to-your-workbench/)
# Todo
* put the pivot on the side of the breadboard for better hall effect alignment
# License
* `BY-SA` [Attribution-ShareAlike](https://github.com/idleberg/Creative-Commons-Markdown/blob/spaces/4.0/by-sa.markdown)