This assembly can detect pedal or flywheel rotations on a cycle ergometer; it can also be used for other purposes. The assembly consists of a Hall effect switch and a neodymium disc magnet, and includes double-sided tape and twist-ties for attachment. The switch detects the presence of the magnet and tolerates an air gap up to 0.75 inches.
The magnet can is a more flexible solution than a photodetector:
Use with BSL PRO lesson H05 | Wingate Anaerobic Test.
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Important!
It is important that the south pole of the magnet be facing towards the Hall effect switch. If the magnet’s polarity is reversed, the switch will not function. The south pole is marked at with a black dot.
The neodymium disc magnet produces a strong magnet field. Do not place it near sensitive electronic (i.e., computers with hard drives). The magnet should be stored in the packing foam and kept at a distance from any electronic items in the lab or storage area.
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