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There is a recent article In Motion Control Magazine on encoders MicroE is the featured product. Good story on some history and the latest offering in high res stuff. Also some good articles on

Don Wrote: Don... Windows Software can be expensive. Some people are just looking for a cheaper alternative. With Some CNC software costing upwards of $1000 it's easy to see how a 1GB partition on

If I could get you to come setup my system for $10.00 / hr I just want to know when you will start!! Seriously, to me the main issues to look at with using Linux / EMC vs. a DOS / Windows controller

Gents: I have read most all the threads that have been coming through about the Linux O/S. Back in the days when I first started with computers it was on the 8086's, and we had to use MS-DOS because

Regards, John Stevenson Nottingham, England

As long as Bill has made a suggestion about replies to the list, Id like to add one as well. Please be selective in the ammount of an old post you include when you reply. Most mail programs default

Hi, Yes, this is the same principle. The point is that with gratings crossed at an angle movement of one relative to the other produces a series of dark bands which move at right angles to the

Ian Wrote: The kind of system I envisage would be easily made on the mechanical side and would consist of a tape with a number of straight black lines running the length of the machine - say ten at

[long discussion on making read head snipped] That was pretty good; I'm going to file that someplace where there's a chance I can find it again. I had the read head for my Teledyne/Gurley DRO

Elliot Burke wrote: Visible red lasers are now available for about $9. By running them below normal rated power, they will last a very long time. They are VASTLY more collimated than LEDs.

"Ian W. Wright" wrote: Nope, it doesn't do that. All you get is one wave when the analyzer is moved one grating pitch. (If you had a VERY wide grating, maybe several inches wide, then you could

Elliot Burke wrote: Yes, but the resolution would be awfully low. I suspect many mouse circuits have severe limits on how many counts they can accept per second. Also, losing a few counts here

"Elliot Burke" <elliot@...> writes: A good idea, subject to the proviso that film recorders are not perfectly linear, and that high resolution alone is no guarantee of linearity and absolute

This was intended in a joking fashion. No serious person would suggest that any reader of this list is anything other than hardworking and clever. From griping comes invention, as it is an

Phil: Would you please send that.pdf file to me. This way I can have it on file when I get my machine and computer setup. If I decide this is the way I want to go with it. Thanks, Don

I have a .pdf that describes in detail how to install Linux on a PC (part of the Linux Documentation Project. If anoyone would like a copy send me email off-list and I will forward a copy to

Ian, What you described reminds me of a shaft encoder design that utilizes two discs with equal width opaque and transparent sections and the total number of sections for each disc to be different by

I'm not sure what kind of encoders you r looking for. J & L Industrial supply sells a DRO for lathes/mills made by mitsutoyo that has very inexpensive scales...I don't know if they will work for

Hi, A number of measuring systems I have seen use the Moire effect - is this a tecnique which might be used to overcome the lack of a suitable pitch grating? As I remember, two gratings are used

> Hi Bill > > I vote with you on this one. > I guess it is a big ask, but to whoever takes it on, my heartfelt thanks. > > Russell Dunn > Perth, > Western Australia > > > From: