jk wrote:

What you really want is an ELS (electronic lead screw, (See
http://tech.groups.yahoo.com/group/E-LeadScrew/
for one version, and some of it's variants.

But as for buying it, I think it is a steal at $50
I thought I was lucky when I got mine for $100.
Including boxes of misc parts that turned out to have a watchmakers
lathe in it too)


Thank you.

I found that group this morning. It's what I had in mind, but I was
thinking of using a Arduino Mega 2560 as the controller. I have 35 new
Grayhill 88JB2-252 20 button matrixed keypads, several 16*2 LCDs and
maybe a motor that will drive a leadscrew. There is supposed to be
source code available to convert G code to run on that board. I have
also downloaded Linux CNC and I am wading through the documentation. I
am thinking about building a mini CNC milling machine with the pile of
stepper motors I salvaged from some large printers. I have a hobby sized
mill, and a working lathe would let me make the parts I need,


http://home.earthlink.net/~mike.terr...88BJ2-252e.jpg is a
picture of the keypads. New markings can be made as a label to cover the
entire module. A pair would give me 40 switches, which is five more
than the ELS project used.


--
You can't have a sense of humor, if you have no sense.