Hi all,
I built a simple interferometer for measuring the surface of a hand
ground/polished telescope mirror a while ago.
Yesterday I removed the expanding lens and used a photodiode to
measure the interference fringes. I mounted the back-reflector on a
small motorized stage which has ca 100mm
Hi Anders W !
Happy to see some pic of your's prototype !
I have ever made an prototype interferometer to do measurement
of distance. And I have some difficult to have a good signal on photodiode to
have stable measurement.
For that i know I think to know in which direction you are going you
2009/12/18 Anders Wallin anders.e.e.wal...@gmail.com:
I am wondering if anyone in the group has experience with a commercial
professional interferometer used for measuring machine tools?
Not directly for machine tools, but I have used products from Polytec.
Happy to see some pic of your's prototype !
I have ever made an prototype interferometer to do measurement
of distance. And I have some difficult to have a good signal on photodiode to
have stable measurement.
one picture and some text is now here.
this example is from here
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Screw_Compensation
and includes my comments - compare the file
use this
COMP_FILE_TYPE = 0
nominal forward reverse - nominal is the uncompensated commanded
position
A laser interferometer is on my todo list. I've acquired all of the
optics on ebay for a total of a few hundred dollars. I've built a power
supply. The major part I'm missing is the counting and interpolating
electronics with a computer interface.
The system generates two pulse trains at
Hi there, I am just starting out to try simple cnc on a Taig lathe. I have
the emc2 Ubuntu live disk (Hardy Heron) and I am in the process of adding a
leadscrew (8mm x 1.25mm) to the Taig lathe, I also have 2 size 23 stepper
motors from a printer which I believe are 5 volts 1 amp 6 wire unipolar.
2009/12/18 John Dunn jsed...@sky.com:
I also have 2 size 23 stepper
motors from a printer which I believe are 5 volts 1 amp 6 wire unipolar. The
next thing I need are 2 stepper motor drivers. I'm a bit confused about
these, will any type match up with emc2 or do they have to be a particular
On 17/12/09 23:19, mike walker wrote:
ASUS P5KPL-CM
It seems to use an Atheros chip for which the stock kernel doesn't have
drivers, according to:
http://ubuntuforums.org/showthread.php?t=881156
Looks like a valid loadable module should have come with the CD. You
will
Don't know if the following will help or not. I have a fairly large router that
i built using steppers. size 23 and size 34. the motors are rated five volts.
i run them at 50 volts using gecko controlers and a breakout board. My control
program is Mach3. It has worked well for me for over two
your right. according to what i have heard it is quite doable. but i have not
been able to do it yet. so i went around the problem. i went to the local
goodwill computer store and got a D-Link DGE-530T PCI card for $5. stuck it in
the box and hooked up to the web at once. problem solved for
On Friday 18 December 2009, mike walker wrote:
your right. according to what i have heard it is quite doable. but i have
not been able to do it yet. so i went around the problem. i went to the
local goodwill computer store and got a D-Link DGE-530T PCI card for $5.
stuck it in the box and
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