Quick Tour Video:
Schematics:

Hall effect sensor:

Detector:

Monostable:

Mosfet / electromagnet:

Electromagnet & Hall effect sensor:

IMPORTANT:
1) electromagnet north pole UP
2) rotor north poles OUT
3) hall sensor branded side UP
Rotor details:

This DC electric motor project uses a Hall sensor to detect the position of the rotor and turn on the electromagnet in the precise moment.