Auto Bed Levelling Glitches

[Roxy]

Isn't your origin in the back right of the printer? If so, you have it specified wrong in the Configuration.h file.

Do you have a reason to have your Z axis movement so slow? It is at 2 right now. I'm thinking you can bump that

#define DEFAULT_MAX_FEEDRATE {250, 250, 2, 22} // (mm/sec)

up to 5 or 6 very safely. And you have the Z acceleration very low also.

#define DEFAULT_MAX_ACCELERATION {1000,1000,5,1000}

and similarly, on the

#define HOMING_FEEDRATE {50*60, 50*60, 50, 0} // set the homing speeds (mm/min)

That Z being at 50 can be bumped up to maybe 250. That will make the video's much less painful to watch!!!

But here is the first stuff I question. You have:

#define LEFT_PROBE_BED_POSITION 50
#define RIGHT_PROBE_BED_POSITION 150
#define BACK_PROBE_BED_POSITION 150
#define FRONT_PROBE_BED_POSITION 50

But you have your bed size set at:

#define X_MAX_POS 250
#define X_MIN_POS 0
#define Y_MAX_POS 250
#define Y_MIN_POS 0
#define Z_MAX_POS 235
#define Z_MIN_POS 0

I think you should spread out your xxx_PROBE_BED POSITION's to use nearly the full range of the bed. I have mine defined as:

#define LEFT_PROBE_BED_POSITION (X_PROBE_OFFSET_FROM_EXTRUDER+2)
#define RIGHT_PROBE_BED_POSITION X_MAX_POS
#define BACK_PROBE_BED_POSITION Y_MAX_POS
#define FRONT_PROBE_BED_POSITION (Y_PROBE_OFFSET_FROM_EXTRUDER+2)