Jittering and loss of framing range

[linD1 (Craig K)]

This is a D1 Pro v2 with extension kit on it and a 40W X gantry on it with the latest firmware update. It is being controlled by a Linux Ubuntu 22.04.3 LTS system via USB 3.0 port and cable with over 500 Gb SSD and 32 GB mem via Lightburn 1.5.01 full licence. I have done over 15 test grids, 21 test lines and squares, and 4 complete project burns of a time totaling 4.35 hrs with no transversing issues.

but Saturday after last completed project mid burn the X axis went mental, i.e. instead of cutting a line of 4.1 in long it jittered back and forth of about .2 in and did not stop until I hit the emergency stop button since it was faster than moving to the computer to hit stop. I proceeded to see what the computer was doing and checking connection, ie USB and power. Saw nothing and NO error from lightburn showing. Cheched the X and Y axis motion and saw and felt nothing wrong. Restarted D1 and re homed the head to finish the project. It proceeded to finally finish that project with NO issues. I then setup the next project which was a duplicate of the previous one and it completed that 1 OK. The next project was started but failed upon second layer command 1/2 way through, again NO error messages on the software but same jittering on X axis ONLY. I then shut down the machine and rechecked everything including checking belt tentsioning on the X axis. It is within the min max by the gauge that was sent with the unit(thanks for that, it makes it eailer to tell). I then restarted everything again desided to try a different project since I could not afford to waste any more material do to jittering x axis. I desided to start a project that I could afford to loose material to see if I could find a reason/issue do to a specific condition, but when I was setting it up for running I noticed issue with the framing. It is has lost 2 in in travel in X direction ONLY so far. but when moving less than 5 in. from home it jumps 2 ins. I have tried hand and lightburn move function to see if there are any issues with the moving function but there is NOT and I can find, but framing still shows it. I have shut down the D1, lightburn, and restarting the computer 3 times and get the same results.

WHAT IS UP?

uploading the project that It screwed up on and the project file the framing issue is on.

test_control_surfaces_reinforcements_paper.lbrn2 (8.0 KB)
Test_elevator_full plank.lbrn2 (10.6 KB)

[Dskall (D Kallenberger)]

I would suspect a bad connection on your axis motor.
You could try it on XCS and see if the problem continues.

[linD1 (Craig K)]

Not connection since that was one of the many checks done.

here is a video and gc of the framing sizing issue

was finally able to acquire a windows 10 computer to try that out also. and issue on the jittering still there on x axis ONLY and only on C02 layer not on any other layer.

The jittering does NOT show up on the control_surfaces lbm2 file. Both of these files were created in the same way except the DL01 layer in the Elevator file.

shoVID_20240226_150550_dissmall.m4v.txt (3.2 MB)
test01_control_surfaces_reinforcements_paper.gc (764 Bytes)

[linD1 (Craig K)]

Here is the gcode for the elevator file. I would include the video but right now have only got them down to 32 Mb, working on reducing them further but not getting there easlily.

Test_elevator_full plank.gc (3.6 KB)