a cheap (<£10) and simple educational brushless motor, allowing adjustment of:
- number of magnets
- coil size and clearance
- sensor phase angle
- coil power timing
- 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 that protects the mosfet when it switches off.
- 5k resistor
- 10 uF cap
- 10k potentiometer
- 10mm miniature bearing
- prototyping board
- [3d printed bobbin](4mm-bolt_motor2 v16_coil_1_Body1.stl)
- laser cut rotor, coil mount & base plate
- magnets - I used 5mm cylindrical
- put the pivot on the side of the breadboard for better hall effect alignment
BY-SAAttribution-ShareAlike