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Rotation sensor for treadmill roller

jayhawkins

Looking for a very low voltage rotation sensor for a modification I'm doing to a manual treadmill. What part would you suggest I look at?

 

Jay

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    couple of companies make Hall effect rotation sensors:

    Melexis MLX90316

    Allegro Microsystems A1332

    There are also magnetoresistive rotational speed sensors such as NXP's KMI 16 and KMI 17

    Magnetic pickup sensors are older technology available from many suppliers, but you can make your own with a magnet, a coil of wire and a steel rod (nail). These do not require any power, but the signal at low speed may be small.

    Similarly a capacitance pickup can sense nearby metal gears.

    Rotary capacitor sensors can also be used.

    Another technology is an optical encoder.

     

     

     

  • 0 in reply to dougw

    Thanks Douglas. I was actually looking at the NXP products. This is a pretty exciting space, but I've always been a programmer on the business side of things, not the device. A lot of learning to do. This is a whole new paradigm.

     

    I really appreciate your input. I'm flying kind of blind here.

     

    Thanks,

    Jay

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