Re: [CAD_CAM_EDM_DRO] Need help on MAXNC and EDM almost completed

> The only problem is that these new drivers are using the satandard
> STEP and D IR signals for each motor. The MAXNC software I got with
> my first kit was a p hase driven version (each phase of each motor
> is directly activated by a pin of the computer serial port).

Check out the LS7084 quadrature decoder chip, which I believe is
available from www.usdigital.com

This device is intended for interpreting step and direction from an
encoder with two offset channels in the read head. However I think
the pattern should be similar enough to that used for a 2 phase
stepper motor - so this little 8 pin chip can probably do the
conversion for you (well, you would need one per axis).

There are also many more powerful alternatives to th MAXNC
step/direction software - some of which are even free. See
www.linuxcnc.org for one example, called EMC.

Chris Stratton

-------------------------------------------------
Christopher C. Stratton
Engineer, Instrument Maker, and Horn Player
ccs@... 617 628 1062
http://web.mit.edu/~stratton/www/brassbuild.html