Summary
- New features and improvements
- Massively speed up MMU filament changes [MMU]
- Updated default input shaper profiles [C1+, C1L]
- Updated translations (beta didn’t have new texts translated)
- Fixes
- M1704 MMU load test gcode now considers toolmapping [MMU]
- Fixed MMU sending spurious attention reports to Prusa Connect during normal toolchanges [MMU]
This is the release candidate for the upcoming firmware 6.5.3 for the Prusa CORE One L, CORE One+, CORE One, MK4S, MK4, MK3.9S and MK3.9.
For a complete overview of features introduced in firmware 6.5.3, users can refer to the 6.5.3-beta published earlier.
Massively speed up MMU filament changes [MMU]
A series of improvements have been implemented that massively speed up MMU filament changes by up to 9 seconds. Some changes in the MMU firmware were required as well, so it is necessary to flash a new 3.0.4 firmware to your MMU unit.
The improvements include:
- Parallelized unloading filament from the nozzle and idler engaging.
- The printer does not wait for the final idler disengagement to finish to continue printing.
- Parallelized selector and idler movement.
- FeedingToFinda phase now obeys PulleySlowFeedrate with higher value.
- Optimized idler selection mechanism during filament change.
Updated default input shaper profiles [C1+, C1L]
In 6.5.3-beta, we’ve fixed a bug in the input shaper configuration of our CoreXY printers. If you haven’t changed your input shaper settings, the new values will update automatically.
NOTE: If you have CORE One L or an accelerometer accessory, we recommend re-running your input shaper calibration.
If you modified these values in the past we recommend resetting your input shaper profiles to defaults using the Settings → Input Shaper → Restore Defaults.