6.5.2 Firmware for Prusa CORE One L
Summary
- Fixed nozzle cleaning failed
- Improved PSU fan checks
- Improved AC Bed sensitivity to voltage fluctuations
This is the stable release of firmware 6.5.2 for the CORE One L, addressing several improvements and bug fixes, most notably false positive "Nozzle cleaning failed" errors.
Fixed nozzle cleaning failed
Both user feedback and our internal testing indicated that the nozzle cleaning checks were too strict, leading to false "Nozzle cleaning failed" errors. In some cases, the error appeared even with a brand new or freshly cleaned nozzle. We've tuned the detection parameters to reduce false positives while maintaining reliable contamination detection.
Improved PSU fan checks
We’ve adjusted the PSU fan checking parameters to prevent false PSU fan check failures.
Improved AC Bed sensitivity to voltage fluctuations
We made the AC bed less sensitive to mains voltage fluctuations. The printer should now handle small brownouts more reliably.
Release notes
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.5.2
RE:
This did nothing to improve AC Bed sensitivity. Plugged in my ups, unplugged it from the wall, FAIL. I then used a line conditioner, then I was able to go on UPS, but FAIL when it went back to wall power. Took seconds to prove this doesn't solve the problem.
RE: 6.5.2 Firmware for Prusa CORE One L
I had the "Nozzle Cleaning Failed" errors several times before this update, interestingly every time a reboot of the printer fixed them (retry always failed, printing with "ignore" was fine as well).
Was happy about the proposed fix and installed the new firmware, but had this issue again yesterday, also a reboot fixed it.