Alex, thanks for the info but I've been down that road and I really have
a very nice mechanical platform. I'm real impressed with Timaya's products.

   - Tom

At 02:51 PM 2/7/01 -0500, Alejandro Fubini wrote:
>Tom,
>
>If you can get hold of inexpensive servos, I think that would be the best
>way to go, you should be able to find good deals on servos at
>http://www.towerhobbies.com/
>
>To convert them so they rotate 360 degrees, you can go to
>http://www.stampsinclass.com and go to the DOWNLOAD area and then to the
>'Robotics Experiments' documents, in it they give you detailed instructions
>on how to convert the servos, alternatively you can go to
>http://www.hvwtech.com/servos.htm for the same type of information.
>
>While I was at it I referenced a book 'Robot Builder's Bonanza, 99
>Inexpensive Robotics Projects' by Gordon McComb. I guess this is considered
>the bible for amature robotics and it goes into some depth on feedback
>control for DC motors. Unfortunately, you're kind of stuck either using
>open-loop control which will not be accurate or closed-loop which will mean
>adding an shaft encoder of some sort. If you want me to send you some more
>detailed information from the book let me know and I'll email it to you.
>
>Alternatively you could use one motor only to drive the robot forwards and
>backwards and then have a separate motor to control the turning wheel.
>
>--Alex


------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.