The only thing that bothers me is a brief note in response to to a question
in the Simple Step pdf. It's on the next to last page and is their FAQ.
-quote-
Q. How far can I move if your board can only step 65,534 steps total travel?
A. If you have a mechanism connected to the motor that allowed you to move
the unit 0.001 inches per step, you could travel 65.534 inches (5.4612
feet) total travel. Another example would be a mechanism that had an 0.01
inch per step resolution which would allow you to move 655.34 inches
(54.612 feet).
-end-
Now if you wanted 0.0001 increments, which is often talked about here,
would you be limited to 6.5534 inches total travel per axis? Sounds like
it from their answer.
If you went with 0.0005 then ~ 13 isn't so bad.
Ray
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Message: 11 [CAD_CAM_EDM_DRO] Digest Number 483
Date: Sun, 07 May 2000 21:24:14 -0400
From: Ron Ginger <ginger@...>
Subject: Re: CPNC
Date: Fri, 05 May 2000 06:57:59 -0400
From: John Guenther <jguenther@...>
Subject: A box for CPNC
Ron,
Take a look at for the intelligent driver boards
they offer. These look like they might be what you are looking for and
could be an alternative to FlashCut if they don't want to play in the CPNC
arena.......
thanks for the note, I pulled the docs on Friday and read them over. It
does indeed sound like a fine way to run steppers under windows. I think
I may order one and try to modify my current VB program to drive them.
The only tricky part is getting the timeing right to cause the motors to
do a ramp move. The SSXYZ board does say it uses a common clock so all
motors will keep together within a few microseconds, but it looks like
you hve to calculate the time for each axis first. Ive sent a message to
them for clarificaiton.
A 2 amp board for 3 axis is about $350. This beats FlashCut by a good
deal. And thy have a big 6.5 amp board for aout $400. Looks like some
good stuff.
ron
