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Servos move when power on, before program starts — Parallax Forums

Servos move when power on, before program starts

OdinOdin Posts: 2
edited 2009-10-10 22:51 in Robotics
Hi, I am in the process of calibrating my servos to do 90 degree turns precisely. (BOE- BOT Rev C)
I have noticed that both servos turn slightly; close to 10 - 15 deg in opposite directions; as soon as I
switch power on. I would like to know if this is normal or, if not, what is going on?

When I set the Bot down, this servo movement will make it turn slightly to the left (aprox. 5 - 10 deg). This makes
it point away from where I am aiming it to.

Thank you for any light into this situation.

Comments

  • SRLMSRLM Posts: 5,045
    edited 2009-10-10 21:29
    This is normal. The BS2 is just starting up, and so one of the things it does is toggle the pins. There isn't really a way around this, except to turn the servos on a moment after the BS2 goes on. You can do this either manually or electronically.
  • OdinOdin Posts: 2
    edited 2009-10-10 22:51
    Thank you very much SRLM. This has been very helpful.
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