Temperature drops cause Klipper to hault
Anyone ever had spurious drops of reported temps causing klipper to hault randomly in a print with a message about the hot end not heating as expected? Im running a Manta M8P with CB1 on a VCore 3.1 and from time to time this occurs. At first I thought it was my wiring but that doesn't really make sense as all the reported temps are dropping, not just the hotend. Maybe the link between the CB1 and the MCU is getting overloaded?
8 Replies
upload your klipper.log
same to me,... Now the third time within 3 months,.. after checking cabeling and other parameters flashing several times the firmware it was working again,.. now yesterday after printing 10kg+ PETG it is failing again after 1-2h printing
Looking at your log the hotend is heating up when the full power is applied, just not enough. So either the PID is wrong, the heater can't keep up the flow rate you are asking of it, or the heater is broken
Thx Today I replaced the "old" Rapido HF against a new one. Looking at the log it seems to be like before. But anyway, I will see
Same problem with new Rapido HF sometimes after 2-3hour printing sudden drop, now after 5 Minutes same problem!?
before 150 and 210° it was calibrating heightmap
Additional I tried another SD-card, but no success,....
After this last night I scrolled trough the commits and found some "improvments" regarding the Octopus-boards. Next step for me is to downgrade back to older firmware
check if Your fan isnt cooling hotend too much, this was mine issue, and i must limit fan output at max 40%
I printed with exactly thsi setup at least 50kg PETG and more then 2000h . The only thing I changed from time to time is updating the firmware and modules,... At the moment I have issues to flash the board at all
Finally found the problem. It was cabeling of the tool fan. Die copper inside the isolation was broken and on special movement of the extruder it lost sporadic contact. The difficulty was to find the location, because it was not at the end or beginning of the cable shielding, nearly in the middle,....But not reacting on vibration only at special angles,... so at the end I renewd the whole cableset to the extruder,...