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Robotic functions — Parallax Forums

Robotic functions

ArchiverArchiver Posts: 46,084
edited 2004-04-22 14:22 in General Discussion
Hello,
Trying to work out the best way to design a simple robotic face to
express simple emotions using servo motors. The problem I'm haveing
is not sure if the PIC is the stamp chip or do I need a stamp chip
for each motor? Also do I need a development board to control the
stamps or is it the PIC?
Cheers willie

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-04-22 14:22
    To control a servo, you send a 1 to 2 mSec high
    pulse every 20 mSec to 50 mSec. (1 mSec is all the
    way left, 2 mSec all the way right, 1.5 mSec is
    center).

    The BS2 Stamp 'module' (a 24-pin wide DIP form-factor
    circuit board) has 16 I/O pins. It is a single
    tasking beast, meaning if you want to control
    16 servos, each servo's pulse will go out at
    a different time -- BUT, since you'll refresh
    all 16 servos every 20 to 50 mSec, this isn't
    a problem.

    The 'module' has on-board a PIC processor, which
    serves as the CPU of the module.

    You will need some kind of board to plug the
    servos into -- each servo needs three wires.
    These are VCC, Ground, and Signal. The BS2
    supplies the Signal, but you'll need a
    connection for VCC and Ground for each servo.

    The BoardOfEducation has 4 servo connections
    on it already, AND has a socket for the BS2,
    AND has a small prototyping area. The BOE
    Full Kit may be all you need to start with.


    --- In basicstamps@yahoogroups.com, "williewong79"
    <williewong79@y...> wrote:
    > Hello,
    > Trying to work out the best way to design a simple robotic face to
    > express simple emotions using servo motors. The problem I'm haveing
    > is not sure if the PIC is the stamp chip or do I need a stamp chip
    > for each motor? Also do I need a development board to control the
    > stamps or is it the PIC?
    > Cheers willie
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