Homing of Y axis using 3.3
I have been using the older version of firmware/software for a number of years. I noticed that the gantry drifted out of square over time, so updated the Y axis homing to split the Y axis motors, home each of them independently (over a short distance) applying a small correction factor for the difference in end stop placement, and then recombining the axis motors. Basically meaning that the gantry is squared evry time the Y axis is homed. This relies heavily on the M584 command, which appears to have changed in the latest update.
If I now enter a command such as M584 X0 Y1 Z2 U3 P4 The command appears to execute OK (it gets a tick) and the U axis appears on the dashboard screen. However if I now move the Y axis both U and Y motors turn.
I notice that the new config files define both Y and U axes, but I cannot see where they are combined for normal operation, or determine what the command might be.
Please let me know which command I can use (or other function) to split the axis/motor linkage for this homing purpose, and how they can be recombined.
Any help appreciated.
Is this a good question?