Support Needed for 4-Head Printer Setup: Y Axis Error

droftarts

@Aitor Thanks to @AndyE3D, we've found a workaround for this issue. The A axis, though it has been set as a linear axis with the M584 R parameter, is still regarded as a rotational axis in feedrate calculations, and so was being ignored when mapped to an axis with linear feedrate calculations (I think). The workaround is to implicitly set it as an axis with linear feedrate calculations, with the M584 S0, eg:

M584 X0.1 Y0.0 Z1.0 U0.2 V0.3 W0.4 A0.5 R0 S0

This seems to get around the issue, and when mapped to the Y axis, the A axis moves correctly, at least for me in testing. It's being fixed in the next release so the S parameter defaults to the R parameter if it is set.

Ian

Aitor

Good morning @droftarts,

I’ve implemented the solution you suggested, and in the initial tests, it seems to be working correctly. If I notice anything unusual, I’ll let you know.

I have a question: when this is fixed in the firmware, should I keep S0 or remove it? Or, on the contrary, does it not matter if I leave it in place?

Best regards,

dc42

@Aitor you can leave it in place, it won't do any harm.