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Hall effect potentiometer

Discussion in 'Electronic and hardware generally' started by AceOfSpies, Nov 27, 2013.

  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    If you choose Hall sensors it is easy to direct drive/mount them, no gearing needed.
    • Agree Agree x 1
  2. helisfreak

    helisfreak Member

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    So go with the 180degrees? Like this one?
    http://www.digikey.com/product-search/en?keywords=987-1392-ND

    Just to confirm, this work with Adruino and wiring is the same, except these important positive and negative need to be right?
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Yes those would be fine. It is a good idea to use a flexible coupling and those come in a variety of sizes to suit most mounting needs.
    • Agree Agree x 1
  4. helisfreak

    helisfreak Member

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    I have never seen a hall sensor before... They have no friction right, meaning the shaft turn super easily unlike a wire wound pot? Does it have ball bearing to support the shaft?
  5. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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  6. Nick Moxley

    Nick Moxley Well-Known Member

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    The Bitech/TT pots have a bushing not a bearing unfortunately, but that bushing is pretty dang tough i might add.
    • Informative Informative x 1
  7. paulg100

    paulg100 Member

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  8. helisfreak

    helisfreak Member

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    Well... I ordered 2x 6127 from mouser...

    But I found a few of these from some old project... the specs say they are Potentiometer, but man, they absolutely have no friction whatsoever and spin ultra smooth... wonder if I can use it.

    http://www.vishay.com/docs/57042/157.pdf
  9. lcturkey

    lcturkey Member

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    did you buy the hall effect pots ? Do you need to change setup values in Arduino codes ? Do you know it ? I made a diy hall effect pot. it can control the motor but cant control the angle of the rots. Motors continue to turn doesnt stop at the position.
  10. lcturkey

    lcturkey Member

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  11. helisfreak

    helisfreak Member

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    Just got them in yesterday, have not try it yet... I haven't read up on it. But did you make sure the + and ground is correct? I think this is important.
  12. Slider

    Slider Active Member

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    I have the 180 Hall effects, but should have got 360's i think.
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  14. Slider

    Slider Active Member

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    The effective range seems to be less than 180 even if they are, Im worried if a motor runs over one side of the limit it will be outside all range and stop working. Just wouldn't have that issue with 360.
  15. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Most don't run anything like 90 degrees up and down on a motor, as the torque loss is really significant. Personally I use 40 degrees max up and down, so 80 degrees total. There is huge headroom left over.
    • Agree Agree x 1
  16. speedy

    speedy Well-Known Member

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  17. SilentChill

    SilentChill Problem Maker

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  18. gigi

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    paulg100 Member

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    same resolution in a smaller range so more precision
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  20. Nick Moxley

    Nick Moxley Well-Known Member

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    • Agree Agree x 2