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X-Band Sensitivity — Parallax Forums

X-Band Sensitivity

computer guycomputer guy Posts: 1,113
edited 2010-02-06 04:55 in Accessories
Is there an easy way to replace the potentiometer on the X-Band Motion Sensor with a Digital Potentiometer.
I want to be able to adjust the sensitivity from within code.


Thank you smile.gif

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Comments

  • computer guycomputer guy Posts: 1,113
    edited 2010-01-25 13:05
    Anyone?


    From the schematics, it would appear that test point "TP" is connected to one pin of the potentiometer.
    Is there an exposed via or something that can access the other pin?

    Maybe Parallax could release a version that can be adjusted in software?



    Thank you smile.gif

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    "powered by Propeller" domed stickers $1.50 - Find them here
    Check out my Design and Technology project for my Higher School Certificate www.ecosureblog.net

    Post Edited (computer guy) : 1/25/2010 1:10:28 PM GMT
  • computer guycomputer guy Posts: 1,113
    edited 2010-02-05 10:29
    Hello? smile.gif

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    "powered by Propeller" domed stickers $1.50 - Find them here
    Check out my Design and Technology project for my Higher School Certificate www.ecosureblog.net
  • kf4ixmkf4ixm Posts: 529
    edited 2010-02-05 14:36
    i personally think you could if you could figure out the value for the pot, (maybe stamped or imprinted somewhere?)
  • computer guycomputer guy Posts: 1,113
    edited 2010-02-05 23:52
    The value of the pot is not a problem. Its finding a via to solder the digital pot to.
    Thank you for your reply though. smile.gif

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    "powered by Propeller" domed stickers $1.50 - Find them here
    Check out my Design and Technology project for my Higher School Certificate www.ecosureblog.net
  • FranklinFranklin Posts: 4,747
    edited 2010-02-06 03:25
    Link to the schematics, please.

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    - Stephen
  • computer guycomputer guy Posts: 1,113
    edited 2010-02-06 03:53
    Parallax hasn't released them.

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  • FranklinFranklin Posts: 4,747
    edited 2010-02-06 04:23
    Then how are we to help you? If you can see the pot you could remove it and connect your digital on the same pins.

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    - Stephen
  • computer guycomputer guy Posts: 1,113
    edited 2010-02-06 04:55
    Franklin said...

    Then how are we to help you?
    I was kind of hoping Parallax would help a but.


    I can see the pot but the pins aren't accesssible. One thought I had was to remove the pot with a pair of side cutters (hack at it) leaving the pins poking up from the board, and then solder to them. Wasn't sure how this would go though.

    Any thoughts?

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    "powered by Propeller" domed stickers $1.50 - Find them here
    Check out my Design and Technology project for my Higher School Certificate www.ecosureblog.net
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