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Digital Servos?? — Parallax Forums

Digital Servos??

ArchiverArchiver Posts: 46,084
edited 2003-01-30 14:37 in General Discussion
Hello Group,

I am working on a BS2 controlled piece of kinetic art and will be using
servos for the first time. I have found information on the mods required
for continuous rotation but not much in the way of a description of a
digital servo. Can you tell me the difference between analog and digital
servos? Is it a matter of more precision control, or position feedback?
These are only my guesses as I look forward to servo fun.

Thanks for your support as always,

Tim

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-01-30 05:48
    Sorry, I should clarify that I am speaking of hobby or R/C style servos and
    not the larger industrial type at this time.

    Tim
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-30 07:23
    Both types expect the same PWM signal to drive them. The difference
    is internal to the servo and how frequently the motor position is
    updated.

    I found a good explanation here:
    http://www.hitecrcd.com/Support/Faqs/Faq_Genservo_.htm

    Cheers!

    Eric


    --- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
    > Hello Group,
    >
    > I am working on a BS2 controlled piece of kinetic art and will
    be using
    > servos for the first time. I have found information on the mods
    required
    > for continuous rotation but not much in the way of a description of
    a
    > digital servo. Can you tell me the difference between analog and
    digital
    > servos? Is it a matter of more precision control, or position
  • ArchiverArchiver Posts: 46,084
    edited 2003-01-30 14:37
    Hi Eric,

    Thank you for this link, it's great help.

    Tim

    At 07:23 AM 1/30/2003 +0000, you wrote:
    >Both types expect the same PWM signal to drive them. The difference
    >is internal to the servo and how frequently the motor position is
    >updated.
    >
    >I found a good explanation here:
    >http://www.hitecrcd.com/Support/Faqs/Faq_Genservo_.htm
    >
    >Cheers!
    >
    >Eric
    >
    >
    >--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
    > > Hello Group,
    > >
    > > I am working on a BS2 controlled piece of kinetic art and will
    >be using
    > > servos for the first time. I have found information on the mods
    >required
    > > for continuous rotation but not much in the way of a description of
    >a
    > > digital servo. Can you tell me the difference between analog and
    >digital
    > > servos? Is it a matter of more precision control, or position
    >
    >
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