Re: Probing and motor control recommendations

[Till Franitza <till.franitza-at-isw.uni-stuttgart.de>]

Hallo Carl!
I dont have anything to tell about probes, but i can recommend stepper
motor controllers/drivers from nanotec. I built them in to my machine
and they are quite ok.
You can buy them in different sizes and in different cases.
Look on
http://www.Nanotec.de/
My Machine is on
http://www.isw.uni-stuttgart.de/personen/t_franit/primodell/index.html
Till



Carl Mikkelsen wrote:
> 
> Good morning,
> 
> I'm curious what others are using for probes.
> 
> For my Stewart Platform
> "http://www.foxkid.net/cmm/platform/project-notebook.html", I'm using a
> switch placed where the cutting tool would otherwise go.  It suffers from
> various mechanical problems, as well as the inability to get any kind of
> proportional measurement.
> 
> Photo:
> http://www.foxkid.net/cgi-bin/next-res.pl?home_album=/Processed/Carl%27s%20Projects&basedir=./Processed/Carl%27s%20Projects/Stewart%20Platform/Truck%20Signs&res=svga&name=PA250761.JPG&album_name=Truck%20Signs
> 
> Sorry for the long URL -- it is made automatically by my photo album software.
> 
> I have not converted to using EMC for my motion control, but I'm looking
> into it.  I am planning to build new motor drivers using the Allegro 3957
> microstepping controller.  Does anyone have experience with this chip?  The
> feature I like is that it is directly controlled with a binary current
> value, rather then a step-and-direction interface.  Should I be looking at
> other chips as well?  Are there particular issues or styles of interface
> which are more compatible with EMC?
> 
> If this is the wrong place to bring these questions, I am most open to
> being redirected somewhere more appropriate.
> 
> Thanks,
> 
> -- Carl
> 
> Carl Mikkelsen
> cmm-at-alum.mit.edu
> www.foxkid.net

-- 
Dipl.-Ing. Till Franitza
Institute for Control Engineering of Machine Tools and
Manufacturing Units (ISW) 
c.o. FISW
Rosenbergstr. 28
D- 70174 Stuttgart
Germany

phone: ++49 (0)711 22 99 2-28
fax:   ++49 (0)711 22 99 2-22
email: till.franitza-at-isw.uni-stuttgart.de
web:   www.isw.uni-stuttgart.de