Nick Müller wrote:
Hi!

You thought that YADRO came to a standstill? No, I have been using it
now for more than a month on my mill and wouldn't bark about it if it
wouldn't be good. :-)


* I have got a PCB in the meantime. It is decribed (together with
the files needed to let them etch or even etch them yourself). The files
therefore can be found in part 3. Also find a BOM for the parts needed.
Also in this part, programming the uC is a bit better described and a
link to a programmer that consists of just 5 resistors can be found.

* Added is a part 5 that briefly describes how I put the scales to
my mill and how I protected them from the chips and cooling fluid that
would ruin them.


* Also, minor changes were made to the software. I consider it
stable now, I had no crashes within a lot of hours (nearly completed a 4
stroke engine with it).


If someone in the US is willing to make a handful of PCBs and
ship them within the US, he should contact me.

Oh! The link! :-))
http://www.motor-manufaktur.de/werkstatt/09_yadro/en_index.html


Enjoy!

Nick


Geez... fantastic work!

Lots of hours to make this DRO... whew!

Hate to say it but it might be easier/less expensive to buy a used DRO,
as nice as this project is...

And, love that "cubic" engine!

Oddly enough, right before I got back in today and read THIS thread I
went over to "Bargain Outlet" a place that sells assorted close out
building materials and related products (nice prices too!) to look for
some low voltage "under the shelf" lights... but I didn't find any. I
found a spray can of John Deere yellow spray paint (good since I have a
JD lawn tractor of significant vintage), some really nice all stainless
chinese import pocket knives at a buck a shot (2" blade) and right
before I found those, what do I see? An "Electronic Digital Caliper"!!

I looked at the display model and found among other things, a little
cover that slid off and covered the same 4 pins as on your unit(s) on ur
website? I thought to myself, "hmmmm... an interface? On a caliper???
Wazzup wit dat?" :- )

Anyhow they were 10 bucks USD and I bought me one. It works jes fine!

The sheet shows a model with the other features you showed (hold, max,
min etc...) on ur pages with extra buttons. This one doesn't have the
extra buttons...

I'm thinkin to myself, what does this readout do for a position sensing
arrangement? I see no gear as in ur typical dial caliper... so the thing
*must* just ride on a smooth surface with a wheel??? Is that *it*?

What's to stop someone from buying a length of ground stock of the
requisite length and mounting the electronics & mechanical part on
*that*?? Instant long DRO??

Will the 6" one keep reading up to some 2 digit above 0.00 limit??

Looks like I've gotta go back and buy one to take apart to see how that
part works... Hmmmm....