Hi!
So my esp32-based controller box for the Delta Stage is almost 100% complete.
I have added end stop switches into the feet and they work really well.
However, since the project is for 2P microscopy I can’t use any feedback from the images - the purpose is to make this a completely modular unit.
Hence, I need to calculate the backlash for each motor mechanically.
The process goes: (1) raise each actuator an arbitrary amount; (2) lower each until they hit the endstops; (3) count the number of steps until the switches turn back off.
My problem is the movement differential (distance that needs to be travelled back to un-trip the switch) is ~0.5mm which will account for most of the steps in (3), however I don’t know how this relates to the steps of the motors, since it’s vertical travel rather than the 0.5um of the stage itself.
If anyone who understands the levers and relevant principles would kindly share the information with me I would be SO grateful to put a bow on this and wrap it up!!
3 posts - 3 participants