Re: [APML]: Accurate, computer controlled azimuth rotator???

["Tom Krajci" <krajcit@det5wg57.barksdale.af.mil>]

> From:          Ed Troy <etroy@aeroconsult.com>
> 
> I have a need for an accurate (+/- 1 degree for my application) azimuth
> rotator that can support moderate weights (up to 25 pounds, or so) that can
> be controlled by an RS-232 port.  I need to be able to command it to move
> in 1 or 2 degree increments.  Does anyone know of a reasonably priced
> source of such an animal? (Reasonable = <$600.

This looks like a job for. . .the ATM Archives!  ;-)

http://www.system.missouri.edu/atm/

Look for text such as "stepper motor control" or just "stepper 
motor."  I've built some simple stepper controllers that interface 
via serial or parallel ports on a laptop. . .for far less than $600!  
One of my next medium term projects is to build a computer 
controlled alt-az scope (after I do some more research on a few 
topics).

There are a number of folks on the ATM list that are good at stepper 
motor/motion control stuff.

Good luck!

Tom Krajci

Capt Tom Krajci
B-52 Intelligence Officer
"Intelligence:  Ignored in peacetime, blamed in war!"
http://spur.barksdale.af.mil