Re: [CAD_CAM_EDM_DRO] XY -dc motor control , PLEASE HELP !!

One source of information might be the source code for Stepster
http://www.thegallos.com/stepster.htm
Using a mouse as the feedback device will severely limit your update times to
perhaps as little as ten times per second with the serial port. As an
introduction to machine control and CNC, a worthwhile experience..

Regards, Paul.

On Thursday 04 December 2003 6:18 pm, tj_snyman wrote:
> I have two DC motors on my x and y axis with a modified GENIUS mouse
> for an encoder.I use QBASIC and my parallel port.
>
> I also use pulse width modulation for speed control.
> To cut strait lines 90 and 180 degrees works fine .
>
> Problem 1:
> How do I control two DC motors simultaniously to cut a SMOOTH straight
> angled lines (other than 90 and 180 degrees.)
>
> Problem 2:
> How can I use digital output from my parallel port to the external
> pulse width modulator for speed control. (most PWM circuits works on
> a var. resistance pot input for control)

--
irc channel for EMC users at irc.freenode.org
/join #emc
and chat to other users (not many there yet).