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Power/Connection for Micro Servo — Parallax Forums

Power/Connection for Micro Servo

NWCCTVNWCCTV Posts: 3,629
edited 2013-05-22 21:18 in General Discussion
Does anyone have a clue as to how I can power these micro servos from a Prop Boe Board? I am not sure of the voltage or the pinning arrangement and want to ask before I fry anything. http://www.ebay.com/itm/170971634744?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Comments

  • NWCCTVNWCCTV Posts: 3,629
    edited 2013-05-22 17:33
    After doing some Googling I figured it out. Pin out and voltage is the same as a Parallax servo but the math is a little different.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2013-05-22 20:11
    NWCCTV wrote: »
    After doing some Googling I figured it out. Pin out and voltage is the same as a Parallax servo but the math is a little different.

    The math should be the same.
    1500us should center the servo, 1000us should be full (depending on servo) clockwise rotation and 2000us should be full counterclockwise rotation.

    Some servos can go well beyond the 1000us and 2000us limits. If you have a QuickStart board, you can use my QuickStart servo tester to check where the endpoints are.

    HobbyKing's HXT900 servos can turn a full 180 degrees but you need to use non-standard pulse lengths to get them to turn that far.
  • NWCCTVNWCCTV Posts: 3,629
    edited 2013-05-22 21:18
    Thanks Duane. I do have a QS and will give that a try. I was using a different spin program for testing the servo and it was set at 200. I tried 900 and -900 and was able to get them to work. That is all I needed for the moment as I just wanted to make sure they work.
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