On 02/18/2016 06:32 AM, Dave Cole wrote: > > > Are the Chinese glass scales on Ebay ok from what you have heard? > There is at least one 8" device for $200 or less listed. I like > saving $$ but if the device is unreliable it will cause a lot of issues. Well, I don't know. Most likely, for a manually-moved axis, they will do fine, if you can keep them clean. If moved through a lot of travel or dirt gets inside, then I'd guess the name brand units might be more robust. > Never thought about the Enco catalog, good idea. > > The digital calipers; I think they have their own serial protocol? I > could live with a 250 ms update time on the position so something like > that could work if I could extract the position data > without too much effort. > There are some documents on the net that tell how some people have deciphered the serial protocol and built their own readout boxes. Not all these units use the same protocol, so beware!
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