Now that grbl has support for ENABLE_DUAL_AXIS (Dual motor support for self-squaring gantry homing. · gnea/grbl@b75e557 · GitHub), would it be possible to use two endstops (one on each rail) with the XController?
No. Not that simple.
To use the auto-squaring, the cpu_map is altered so that the Y axis would be controlled by two, indepently acting drivers. You would need a different controller .
I think you’re better off just making the axes square.
1 Like
Those solve different problems. Totally agree that you should square up the frame, but having two endstops makes it more convenient to have a home cycle square the gantry to the frame (since you can easily move one side of the gantry and not the other when the power’s off, or a crash could happen). If the required hardware isn’t on the board, though, it’s irrelevant.
I understand the reasoning. I think the common solution is to hold the gantry against the plates or identical spacers when you power up.