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drive motors on a mount

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#1 HenryV1598

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Posted 17 April 2011 - 11:03 AM

My local astronomy club was cleaning out a shed and selling off some of the stuff inside. I ended up purchasing a box containing what appears to be an early CG-5 head on which someone mounted some motors to control it. However, none of the controlling hardware was with it.

The motors are Vexta PH268M-E1.5 motors. They have a DB-9 male serial plug soldered to the ends of the leads. The work looks like it was done by someone who knows what they're doing, but no one knows who did it or where the controller might have run off to.

I'd like to be able to connect this to a hand controller or, better yet, to a computer. Does anyone have any ideas where I could find the right hardware to do the job?

#2 jbattleson

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Posted 17 April 2011 - 11:19 AM

Hi Henry,
It looks like the motors are stepper motors so will need a driver card to run them. You would also need some software to tell the driver when to turn on and how fast to run the motor.
I don't have any experience with that motor so can't give you much more info.
John

#3 jbattleson

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Posted 17 April 2011 - 10:37 PM

I found a little more info.
Looks like the motor is a Mema 23 bipolar stepper.
The voltage and current should be on the motor label.
Any bipolar driver able to supply the current on motor label should run the motor.
Your big problem is finding a computer program meant to run a stepper motor telescope mount.
Maybe someone in "Astronomy Software & Computers" would know.
John






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