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180 Degree Hall effect sensors

Discussion in 'Motor actuators and drivers' started by wannabeaflyer2, Mar 19, 2016.

  1. wannabeaflyer2

    wannabeaflyer2 Well-Known Member

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    Hi Guys make sense to ask here ( admin no coins required :) for my Diy linear actuator project I would like to use if Possible My 180° Hall sensors instead of my 10K multi turn pots...

    to do this I would need to translate 350-400mm of linear movement to 180°Rotory movement , ,on the face of it simple ( Hmmmmmm ) big arse gears come to mind ..

    I wanted to base this feedback system on off the shelf items, which would make things easier for DIY community to recreate , so inititally I was going to use GT2 Belt and Gears ( As per 3D printers ) .. on the basis that for 400mm travel (equates to 200 Toothed belt segments ) so would need a 400 Toothed Gear to get the required 2:1 Ratio I believe I need to achieve 180 degree rotation ----- I may well be overthinking this but do you guys have any thoughts on how this can be done or alternate ways of achieveing the above 400 linear to 180 degree rotary translation ...


    Im working on the premise that hall sensors are a lot less prone to noise related signals than say Pots

    this is my current setup option


    Admin if this post does not belong here, can you shift it to my DIY Linear Actuator Posting s or releveant section Please :)
    Last edited: Mar 19, 2016
  2. MarcoMade

    MarcoMade Active Member

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    Puoi usare una barra filettata e fare scorrere un dado che imprime la rotazione di un pot 180*

    You can use a threaded bar and slide a nut that rotates a pot 180 *
  3. Edaurdo

    Edaurdo Member

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    @wannabeaflyer2, have you found an answer to your question? I am interested in knowing it and know how you have solved it.

    Thank you very much!
  4. wannabeaflyer2

    wannabeaflyer2 Well-Known Member

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    Hi @Edaurdo in the end I stuck with 10 Turn Potentiometers , and the Belt drive , just modified the Pot mount to reduce the belt tension load on the pot bearing .. I have not fired up my platform for a loooooongg long time so cant really say if the lifespan has improved , im now looking at Optical encoders but have had some issues with the PCB so its back for repair . Once its returned i'll be updating my Post to show whatever lessons I have learnt and any new design mods I have made .. Cheers
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  5. Edaurdo

    Edaurdo Member

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    I hope that soon you return to the ring ..
    Could you tell me what kind of motors you are using? Mainly I am interested in knowing what is its power and RPM