Look for "reference mark every 50mm" or "quadrature with index" and an R pin?on the connector pin out. When I bought my scales the documentation showed a 'R' pin but I hadn't known enough to order that option. (The ebay seller had something in the listing about letting them know if you wanted the 'R' option.)
On Wed, Jul 21, 2021 at 11:20 PM mike allen <
animal@...> wrote:
??? ??? Jerry , is that something that the vendor nots
somewhere/somehow in the product description ?
??? ??? thanks
??? ??? animal
On 7/21/2021 9:13 PM, Jerry Trantow
wrote:
If you purchase DRO glass scales, I recommend
finding ones that have an index. I believe these may have an
index every so often (every 50mm??) With this feature, you could
eliminate?the home switch or at least avoid any inaccuracies
between your home switch and linear scales. I didn't realize
this was available when I bought scales. Any future purchases
will have this feature. (Trying to justify replacing my lathe
cross slide scale with a 1u with index.).
On Wed, Jul 21, 2021 at 8:33
PM mike allen <
animal@...> wrote:
??? ??? you can pick up a 3 axis DRO with glass scales
for under $300.00? everything ya need in a few boxes off
Amazon or even the Bay
??? ??? animal
On 7/21/2021 2:19 PM, Glenn N wrote:
I joined the group to see if it
could generate some interest in me doing CNC and CAD. I am
a retired ET with more than 36 years of electronics
background. I put together an all manual machine shop when
I retired 15 years ago. I purposely avoided anything to do
with electronics as I am burned out on it. I even built
the shumatech DRO350...what a shitshow that turned out to
be. Poor design with lots of noise issues. Even down to
getting the polarity wrong so you have to use batteries
with the scales...Frustrations I don't need. So, I bought
the DRO 550 as it was supposed to be excellent and a huge
improvement...then people started using them and all the
glitches started falling out. Fortunately I hadn't bought
glass scales yet and all the parts are still in the box.
So I will quit lurking and go elsewhere.
Glenn
