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Need to design a controller for 3 R/C Servos!

Discussion in 'Electronic Design' started by mark, Jan 30, 2006.

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  1. mark

    mark Guest

    I need to make a controll board for 3 R/C servos by regular
    potentiomenters.
    The problem I have - I do not know nothing about electronics and how
    they work!
    If anybody interested in designing the whole thing for me and get paid
    - please let me know by sending email to
    This is NOT a joke!
    Thanks!
    Mark.

    PS. when you'll send your email - our anti-spam filter must verify your
    email - so you will receive a note and will need to respond to it
    first.
     
  2. Dan Hollands

    Dan Hollands Guest

    Your first problem is to clearly define what you are trying accomplish. Then
    maybe someone can tell if they can help you.

    Dan



    --
    Dan Hollands
    1120 S Creek Dr
    Webster NY 14580
    585-872-2606

    www.QuickScoreRace.com
     
  3. To the casual reader : 3 pots -> 3 PWM signals
    with rep=20ms, TOn = 0.8 - 2.0ms

    Rene
     
  4. Iwo Mergler

    Iwo Mergler Guest

    You can buy such things, they are called servo testers:
    http://www.hobbypeople.net/gallery/518105.asp

    If it must be anew design, here is your design for free.
    Take the schematic from the link below and make three of them.

    http://www.uoguelph.ca/~antoon/gadgets/servo3.htm


    Kind regards,

    Iwo
     
  5. John_H

    John_H Guest

    To this casual reader, those controllers are already readily-available
    commercial items. I used 7-channel controllers to interface to my own
    electronics almost 20 years ago.
     
  6. Barry Lennox

    Barry Lennox Guest

    A couple of quick suggestions, hack an old RC transmitter and
    receiver. Or, there has been several articles on such controllers in
    electronic mags in the past 2-3 years. Elektor and Nuts'n'Volts both
    come to mind. But sorry, I don't have the magazines, just recall
    seeing the articles.

    Barry Lennox
     
  7. mark

    mark Guest

    OK guys and gals!
    Thanks for your input and here is the task that needs to be
    incorporated into the design:

    Control 3 servo using transmitter joystic (purchased separately).
    Have the ability to use feedback potentiomenter and bypass this feature
    as well.
    Have switchable speeds of servo responding to the joystick movement.
    Ability to go back to "neutral" position by means of pressing the
    button.
    Ability to change the "neutral" position by pressing "remember" button.

    This is not a "one-day" project and we are really looking for capable
    people to do the job.
    There is nothing found so far on the internet that does the job. As I
    have mentioned before - no computer interface needed.
    Thanks!
    Mark.
     
  8. Jim Thompson

    Jim Thompson Guest

    Have your purchasing department contact me.

    I have previously done chip designs that encompass these functions.

    ...Jim Thompson
    --
    | James E.Thompson, P.E. | mens |
    | Analog Innovations, Inc. | et |
    | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
    | Phoenix, Arizona Voice:(480)460-2350 | |
    | E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
    | http://www.analog-innovations.com | 1962 |

    "Don't mess with my toot toot!", Antoine 'Fats' Domino
     
  9. Iwo Mergler

    Iwo Mergler Guest

    Are you trying to make a product or is it a one-off?

    For a one-off, buy one of those computerised remote controls with
    the right features, and feed the analog PWM signal into the decoder
    section of a remote receiver. This bypasses the RF sections.

    For a product, there is a large community out there, doing servo magic
    with PIC controllers. Try comp.arch.embedded or one of the various
    PIC lists.

    For instance, you could contact this guy (first hit on google for
    "servo tester pic":

    http://www.rc-cam.com/servotst.htm

    Personally, I wouldn't use the controller he did, but even so it can
    do the job.

    His PIC program already does some of the features you want. It would
    only take a few man-days to add your scaling function plus neutral
    setting.

    Kind regards,

    Iwo
     
  10. quietguy

    quietguy Guest

    Why go to all that trouble when you can just buy a JR RC Xmitter on ebay
    for a few $$$?

    David
     
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