Summary
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Improvements
- Improved head LED behavior by synchronizing tool LEDs with the printer state and matching the status indication used by the heated bed LEDs.
- Added Nozzle Cleaner Y Offset adjustment to the Tune menu for easier calibration directly from the printer interface.
- Added ringdown decay information to the Sensor Info screen for improved diagnostics and troubleshooting.
- Improved synchronization of loadcell samples between the toolhead and xBuddy, increasing the robustness of probing and calibration procedures.
- Optimized motion step calculations to reduce the risk of layer shifts during printing.
- Streamlined hotend management logic to improve maintainability and reliability.
- Reduced calibration time by skipping temperature residency during tool offset calibration heating.
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Fixes
- Reworked nozzle heater self-test validation to use thermal model evaluation during heating, reducing false self-test failures caused by minor deviations in heating performance.
- Added validation of INDX coil current during heater self-tests to detect abnormal nozzle behavior.
- Updated INDX nozzle thermal diagnostics to leverage thermal protection results for more accurate fault detection.
- Fixed an issue where hotend thermal errors could be reported even when no nozzle was installed by verifying nozzle presence before triggering errors.
- Fixed the Tool Change button incorrectly opening the extruded filament submenu.
- Fixed an issue where an uninitialized nozzle temperature was displayed as 15 °C in the footer.
- Removed a redundant cooldown check from the nozzle cleaner calibration process.
This is the stable release of firmware 6.6.3 for the Prusa CORE One+ INDX and CORE One INDX.