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Thread: Anybody using servos?

  1. #1
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    Anybody using servos?

    I was wondering whether anyone was using servos to motorize their car computer installs. I bought two of those servo motor controllers and two different sets of servos, but still haven't figured out how to do anything but induce seizures in the poor little servos.

  2. #2
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    Where did you get them from? I know how to use servo motors, I took a class in them but I am having difficulty finding them at reasonable prices. If you could tell me where to find them I would be able to help you out much more here.

    BEN

  3. #3
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    I bought them on eBay... first a pair of GWS micro servos, then a pair of standard Futubas.

  4. #4
    FLAC
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    What exactly are you trying to motorize?

  5. #5
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    Well, I have an OEM head unit for my car that I've gutted. It's *almost* double-din, so it's pretty big. I was planning on using the now-empty shell as the basis for the in-dash portion of my car computer. That way it will plug nicely into the existing mounting structure and fit the existing fascia. It occured to me that I could go ahead and use the faceplate of the old stereo as a security cover, obscuring my LCD from view. I'd like to split that faceplate down the middle and motorize the two segments such that when I power up the stereo, they would slide sideways, exposing the LCD hiding underneath. The servo controllers I bought seemed like they would make that fairly simple... but they don't seem to work.

  6. #6
    Maximum Bitrate jzgt's Avatar
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    Most servos, except for the really expensive ones, have a limited range of motion. I was going to use some for my heater controls. I figured, if I want to get this stuff working by next spring, I should scrap that plan....basically, pick my battles. I'd ultimately like to control all of that stuff on screen. I figure I'd work on it after I got something a little more basic installed in the car.

    - Jeff

  7. #7
    Rob
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    Maximum Bitrate Rob's Avatar
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    This guys used a servo to motorise his display:

    http://www.ashleypowers.com/

    I believe you can get a basic servo controler circuit here:

    http://www.roshanindustries.com/carmp3/mp3pumphouse.htm

    Also I believe it's possible to use a 555 to control a servo, I'm pretty sure I've got a design somewhere, I'll see if I can dig it out, no promisses.
    And you say people actually pay money for M$ Windows?
    www.mp3mini.co.uk (Does what it says on the URL) www.openclassic.co.uk (The new car, with zero rust!) www.rob-web.co.uk (My other site)
    Total re-design underway: on the whole progress is very slow as the car is taking up too much time :)

  8. #8
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    Yeah, that first link is one of two that inspired me to try my hand at this servo stuff. (The other being Sproggy's here: http://sproggy.mp3car.com/servo.html )

    As to the second link, that's where I bought the two servo controllers that don't work.. from Mastero. (They are just mass-produced Sproggy servo controllers.)

    If you do come across any alternative controller circuits... or any other helpful information... I'd be grateful. As it is, I'm sitting on four servos and two controllers that do nothing useful for me.




  9. #9
    Retired Admin Aaron Cake's Avatar
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    The book "Robot Builder's Bonanza" by Gordan McComb contains about 5 different servo control circuits.
    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
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  10. #10
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    That's a really great book... I used to have a copy, before a friend permanently borrowed it. I saw the new revised edition at Borders the other night, but it didn't occur to me to look there for an answer to my problem. Thanks for the suggestion!

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