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Force controlled joystick

Discussion in 'SimTools compatible interfaces' started by schredder, Aug 6, 2010.

  1. schredder

    schredder New Member

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    Hello to everyone !

    Thats my first post here after just signing in.
    I get a lot of information here and decided its time to contribute my share...

    I'll try to get to the point.

    I wanted o make a force controlled joystick for some time.
    I manged to make a dual amplifier that can get the load cell or strain gage signal to the right level of the A/D converter of a MicroController.
    In order to get a FULL AXIS from the micro I had to feed the Vref with half of the full voltage,so a voltage dividation came in place(I wonder why I could'nt find any design that has that option)...

    In order to get a compact and easy to make board- I have used SMT parts and pads to solder the wires to.
    No drilling is required unless you want to fasten it with screws to something...

    Attached here is a PDF file with some explanation, parts placement and layout.
    both IC's are INA122

    Circuit is preety dense so take caution soldering the parts. spacially the IC's as they are sensitive and not very cheap. (but they are the best choice anyway...)

    Good luck

    Nir Bar

    Attached Files:

    schredder, Aug 6, 2010
    #1
  2. Frakk

    Frakk Active Member

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    Re: Force controlled joyctick

    Thank you for sharing!

    Would you mind posting a schematic diagram with the PDF? It would help less experienced members understand your circuit better.
    Frakk, Aug 6, 2010
    #2
  3. schredder

    schredder New Member

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    Did'nt think of that Frakk...

    I have added the schematic for a single axis. hope it will do.

    Thanks you for your noticing...
    schredder, Aug 6, 2010
    #3