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  1. #1
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    Where to find small steppingmotors for DIY instruments?

    Hi,

    I like to build my own OH 737 instruments with steppermotors.
    Servo's are not smooth enough and give a lot of noise when moving.

    I'm looking for small motors like the one Flight illusion is using, but they are hard to find.
    Anybody an idea?

    Best regards

    Jan Geurtsen

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    300+ Forum Addict skino's Avatar
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    Re: Where to find small steppingmotors for DIY instruments?

    Maybe the motors from old floppy or CD Drive?

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    Re: Where to find small steppingmotors for DIY instruments?

    Hi Jan
    Try Quartell Pynacker
    greetz

  4. #4
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    Re: Where to find small steppingmotors for DIY instruments?

    Hi,

    I've bought steppers from this company without problems. I don't know if their smallest motor is too big for you.

    http://www.arceurotrade.co.uk/Catalo...Stepper-Motors

    Ian

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    Re: Where to find small steppingmotors for DIY instruments?

    Hello Jan

    Go to the nearest dump for printers. Look for any Laserprinter from HP, Canon etc.
    Usually you will find 3 - 6 steppers inside and a lot of other nice stuff - like gears, springs,
    DC motors, clutches, solenoids etc. Scanner devices do also have some steppers.
    In the beginning of my project I ripped apart approx. 10 printers and I now have a huge
    stack of misc. parts.
    Regards,
    Per-Erik
    www.hoddo.net

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    150+ Forum Groupie twisted8's Avatar
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    Re: Where to find small steppingmotors for DIY instruments?

    I used these from ebay. They worked good. Small and cheap.
    http://cgi.ebay.com/Miniature-Steppe...item4ce5a03b82

    seller store
    http://stores.ebay.com/MPS-Electric

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    Re: Where to find small steppingmotors for DIY instruments?

    Quote Originally Posted by twisted8 View Post
    I used these from ebay. They worked good. Small and cheap.
    http://cgi.ebay.com/Miniature-Steppe...item4ce5a03b82

    seller store
    http://stores.ebay.com/MPS-Electric

    Hi thanks

    there are 20 steps pro rev. that means 18 degrees/step.
    Will that work for an accurate instrument?

    Jan

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    150+ Forum Groupie twisted8's Avatar
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    Re: Where to find small steppingmotors for DIY instruments?

    No problem!
    It depends on the gears you use. Check out my video. I don't think is the smoothest but it's good enough for now. Eventually I'd probably try to redo it with a higher ratio gear. I think I have something like 1:10 so that's 180 at half steps gives me 360
    maybe 1:20 would be best.


  9. #9
    75+ Posting Member cscotthendry's Avatar
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    Re: Where to find small steppingmotors for DIY instruments?

    Quote Originally Posted by Jan737 View Post
    Hi,

    I like to build my own OH 737 instruments with steppermotors.
    Servo's are not smooth enough and give a lot of noise when moving.

    I'm looking for small motors like the one Flight illusion is using, but they are hard to find.
    Anybody an idea?

    Best regards

    Jan Geurtsen
    Also, have a look at these

    http://www.futurlec.com.au/StepperMotors.jsp

    I collected a lot of steppers from old printers and floppies as other have suggested, but then went and bought a bunch of these small steppers. The reason being, that all the salvaged steppers were different from each other so every gauge was a one-off different design. If you have a bunch of steppers the same it's easier to do one design for a set of gauges and make all the parts together.
    Regards: Scott Hendry
    www.scotthendry.com

  10. #10
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    Re: Where to find small steppingmotors for DIY instruments?

    Thanks guys, this helps a lot


    Jan

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