I’ve had a number of accuracy issues lately, so I am going back to zero to double check everything. I spent about an hour with a level and a laser level shimming one side of my frame to make it as perfectly level as possible. I spent about 2 hours in the calibration procedure and am I am not making any progress…
I am stuck on steps 1/2 of chain calibration. I can position my chain links (I use a zip tie and pull it tight until they just touch one another) in the dead center of the top beam, +/- some very small amount. I am not sure how to get it exactly center, as I don’t have a way of verifying that the motor sprockets are in an identical position - my eyes are not that calibrated. I am certainly within a 1/32" of an inch though. Just to double check, I counted the number of links on the chain from the same position of both sprockets and its the same #.
When I then move Y- to give the chains slack, over ~36" of the board, they seem to drift to the left approx ~1.5chain links worth.
Thinking this was a centering error, I went back and repeated the previous step. I did this multiple times, always with the same result. I finally counted the links and the RH side had 1.5 more chain links than the LH side.
What would cause both motors not to move an equal amount during this part of calibration?
M2 kit, latest firmware, latest version of Makerverse.