Homebrew PCBs

Stefan, I was talking about Alan.  :D

I'm not in any panic mode either, as I said, I'm waiting for parts to come
in.  Once I have all my hardware, then I'll have all the measurements and
space requirements for the components.  That should help fabrication of the
chassis a much easier thing to do.

I'm going to use my el-cheapo SP-57B unipolar 24V steppers for the drilling
station.  I'm looking at the Xylotex 4-axis DIY driver circuit/power
supply/fan, not bad looking and quick to get up and running, or is that
stalling?

Later, when Alan finishes his work, I'll be using his design on the CNC
station.  By the way he describes it, I assume his system will be more
robust than the Xylotex DIY system.  I'll most likely order the new NEMA 23
269oz stepper motors from Zylotex; that should be plenty strong for my CNC
requirements.

I wish I could design my own basic driver system, but I lack the hardware
knowledge.  I can program a PIC just fine and there are plenty of sources of
information on them (I use PIC 'cause I have everything required for this
system).  It's the part that comes after that I have no knowledge of
fabrication.  Alan has already mulled this over for years now so I don't
mind waiting for him.

I've found this simple circuit over at AaronCake, but as I said, I lack the
experience to determine if I'd just be wasting my time with it. Darn, it
looks like Aaron finally got around to shutting both his tutorials and his
forum.   :(
<http://www.aaroncake.net/circuits/index.asp>

Ok, I've uploaded the material here.  Good thing I kept a copy just in case.
:)
<http://www.xavierkamial.com/Videos/Stepper%20Motor%20Controller.htm>

Comments on that design please?  I see how to control direction and steps,
but what about speed?  Is it a matter of just sending the pulses quicker
from the PIC?

Robert
:)



-----Message d'origine-----
De : Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] De
la part de Stefan Trethan
Envoyé : juin 11 2005 03:50
À : Homebrew_PCBs@yahoogroups.com
Objet : Re: RE : [Homebrew_PCBs] Milling circuit boards with CNC?

I would have been done with my driver design by now, but sadly i have lost  
my HDs and all the nice files and PCB layouts are lost. Why don't you make  
your own driver, it is not that hard? Divide it in two sections, control  
and power, this way you can accomodate additional or different motors  
easily (no. of phase etc..).

...


ST



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