I made this for my brother so he could have sensors or equipment navigate over a microwell plate http://en.wikipedia.org/wiki/Microtiter_plate
it might not be all that useful to anyone else but still I might as well put it up here if anyone is interested.
I added the sketchup model for any parts that I missed on the stl files so just use that to extract parts.
Iâ€™m not going in to a full assembly description but for more details you can have a look at this post over at LMR. It also has a video.
Just now I got some information on the 28BYJ-48 steppers that I used and can verify that this is a problem. So for anyone trying to build a sub-mm accuracy XY table, please try finding other stepper motors.
This is the information Iâ€™m talking about;
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