RE: [CAD_CAM_EDM_DRO] Stepper control w/o a computer?????

Not really. I designed a stepper motor 3 axis power feed for a small
machine tool company. I just used a 555 timer and a rotary switch to
select the axis. I used a switch to change directions and it had a db25
for parallel port operation. It was selected from a selector switch. Of
course there was also a speed control pot. The master module provided
pulse train via the selector switch to the stepper motor driver.
Dan

-----Original Message-----
From: JanRwl@... [mailto:JanRwl@...]
Sent: Friday, January 03, 2003 4:57 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Stepper control w/o a computer?????


In a message dated 1/2/2003 1:27:12 PM Central Standard Time,
jerry@... writes:

> I would like to know is there a device that will control a stepper
> motor with out a computer. ie a black box that will tell the motor
> to spin this way spin that way.
> I guess this box would have to send step and direction signals?
> useing switches.
> The reason I ask this is if I did this first I could have a power
> feed first then worry about adding computer control later.
> plus I could work out all of the mech bugs with out haveing to deal
> with computer bugs.
> Ideas comments..
>