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'Supermodified' Servos — Parallax Forums

'Supermodified' Servos

ercoerco Posts: 20,256
edited 2012-02-27 17:15 in Robotics
"Hack your servo v3.00: Get full PID position and speed control from your servo"

Sure looks great in the video: http://www.youtube.com/watch?v=8jajnIBX2cU

But little or no followup info: http://code.google.com/p/zosupermodified

Too good to be true?

Comments

  • John R.John R. Posts: 1,376
    edited 2012-02-27 14:26
    erco wrote: »
    But little or no followup info: http://code.google.com/p/zosupermodified

    Check out the "Downloads" tab, and specifically the data sheet. I only glanced, but it looks like full docs.
  • ercoerco Posts: 20,256
    edited 2012-02-27 14:59
    Good find, John. There is a detailed PDF in "Downloads", it does look like a fair amount of work was done.

    Now please find where to order their servos, kits, or boards... :)
  • Martin_HMartin_H Posts: 4,051
    edited 2012-02-27 16:44
    I've seen something like that done using the open servo controller. It's a fair amount of work, but you take out the old control board, pot, and rotation stop. You put in a magnet and hall effect sensor to determine rotation and the open servo board to position and give feedback via I2C.

    Now you have a servo that is continuous rotation with position feedback.

    Sparkfun sells open servo boards, but I don’t know if they sell the magnetic sensor.
  • ercoerco Posts: 20,256
    edited 2012-02-27 17:15
    I found this: http://www.sparkfun.com/products/9014 but the reviews sound problematic at best.
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