Firmware Name: RepRapFirmware for Duet
Firmware Electronics: Duet 0.6
Firmware Version: 1.23 (2018-12-24b1)
Web Interface Version: 1.22.6
So as an Xmas present I updated from something older on my Duet powered Prusa and found that quite a lot of the behaviour had changed:
When trying to home X or Y (after an M84 or on start up) the system told me that not enough axes had been homed. Eventually I had to manually set Z via a G92,
Then G30 returns to approximately 5mm after finding the bed, but since G30 is only accurate once ( the variation can be 0.3mm between probings for at least the first five probes on the same spot, it requires a manual operation to accurately set 0.
M557 doesn't seem to work. If I send M557 X20:180 Y20:180 S20 as a Gcode, then check it from the auto bed compensation panel it remains set at x0:180 Y0:180. If I set it manually from teh auto bed compensation panel, then the cset condition persists.
Run Mesh Grid compensation works from the panel but the results are unpredictable (especially on the black PEI bed) where it suddenly dived into the deck and broke the glass, which means a new PEI sheet, new Glue sheet and new Glass.
I thought I had followed the advice on tuning the Mini IR probe, but there is obviously somethng missing and on a Kaptan covered bed the system has just stripped the film off for the third time as it seems to compensate for a height variation that just doesn't seem to be there.
Does anyone have any ideas what is going wrong?
At he same time, even with bed compensation, and after extensive manual bed levelling, the micrometer shows a 4 thou hollow in thecentre of the bed, even with a brand new bit of glass that is flat when measured on the mill, even if I then turn the glass over expecting to find a bulge. (and even if there is no bulldog clip to apply warp. Is this an indication that the X and Y travel guides are bent from too many head crashes? Or have I discovered micro-gravitic anomalies?
Any help would be welcome, I' d like print something over 20mm successfully soon after three years of trying!