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servo motor distances from MCB — Parallax Forums

servo motor distances from MCB

perry.gnoidperry.gnoid Posts: 10
edited 2007-09-14 23:15 in BASIC Stamp
Wondering if anyone has tried extending a servo motor with an additional cable away from the motor control board. Is there a limit without signal boosting? I'm looking to span anywhere from 2 - 6 ft.

Thanks for your help
p

Comments

  • Beau SchwabeBeau Schwabe Posts: 6,568
    edited 2007-09-14 23:15
    perry.gnoid,

    I've taken it 30ft, but there are a couple of things you need to do ...

    1) On the controller end, you need at least a 4.7K resistor on the signal pin. This helps to minimize inductive effects entering back into the controller.
    2) On the Servo end, you need a large capacitor across the power supply. I used a 1000uF, but the actual value could be up for debate.

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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
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