Printer is possessed, tool docked during print

[gnydick]

IGNORE THIS POST no more help needed

I checked my print progress through the webcam on my printer and saw that there was no tool mounted on the toolhead, but it was still printing.

But, it gets VERY strange.

• Some of the pieces of the print were knocked loose, actually dislodged
• It should have dislodged the build plate from the magnetic bed, but it didn't.
• The current adhesion on the print bed too good, a collision that could have dislodged those pieces should have easily ripped the flex plate off of the bed.
• The locking pin on the toolhead is now in the correct unloaded position
• The tool is docked correctly
• All of the tools are docked correctly
• The dislodged pieces of the print are not in-line with the unloading procedure for the tool
• The controller knows there is no tool selected
• Each tool has a docking sensor for safety
  • T0 - T3 are gpin 20 - 23
  • T1 was in use so it should be using gpin 21
  • In the attached screenshot you can see that sensors 20 & 21 are null
  • Sensor 22 is there and has the correct value
  • Sensor 23 doesn't exist
  • console output attached as well showing only j22 exists

I'm truly at a loss for ideas.

tools.g
m122.txt

[mikeabuilder]

Do you have cats?

I'd have a close look at the eventlog in the sys directory for some clues. There may be an error or warning logged.

I think the parts must have come off on because something hit them. If the bed heater stopped and the bed cooled, adhesion might have gone down to make them easy to move.

The docking spaces on my tool changer are outside the soft limits of the machine. When I have had strange tool moves with my tool changer, it was because somewhere in my docking and undocking macros I applied a M564 S1 while the tool head was still moving and outside the soft limits. That causes all subsequent moves to be ignored until am M564 S0 is applied. I haven't had mysterious things like you show. Mine have all been tool crashes.

Now, I always have an M400 before every M564 S1. And we're adding docking sensors to the machine.

[gnydick]

Thanks, @mikeabuilder. I do have cats, and possibly a ghost. It turns out that there was an actual tool change in the gcode somewhere. I was only using tool 1 out of 0-3, but the slicer assumed something needed another tool even though nothing was assigned to another extruder.

So, no more emergency or possession.

Thanks again