So, the firmware can compare the values from the internal thermal model with real values and when a conflict between these values is detected, the printer is stopped and an error is displayed. ![]() It is up to the user to inspect the printer and check for issues. Please keep in mind that the printer knows only that something is wrong, i.e., when the system is not performing as expected. In other words, this is a great addition to already existing thermal protection systems that have been in the printer from the start. In case the anomaly stays, the printer turns off the heating and activates a warning sound to notify the user. In case anything seems off, the printer reacts within seconds and displays a THERMAL ANOMALY warning which goes away in case the readings go back to expected numbers within 5 seconds. This is all based on an internal simulation of the hotend, meaning that the firmware constantly checks whether the thermistor readings are following a specific pattern in the thermal model. This encompasses cabling issues, an incorrectly working heater block, thermistor faults and external factors too (draft, blobs forming on the extruder, etc.). With the new Thermal model protection, we’re aiming to detect unexpected heating issues of any sort and stop heating quickly (in 10-12 seconds) to avoid potential damage to your 3D printer. ![]() We discussed the new firmware in our Prusa Live podcast: The new protection system always allows you to inspect the printer and attempt to finish the print (however, increased user attention is strongly recommended). ![]() It also offers better operation in case of false alarms – for instance, previously, a sudden draft of cold air could stop your print with a MINTEMP error without any chance to recover. This is a great opportunity to give you a really deep dive into the entire system that keeps your 3D printer safe. The recent 3.12-BETA firmware (only for the MK3/S/+) is the first public release of the new Thermal model protection. For the past several months, we’ve been hard at work to bring all these thermal-related safety features to a whole new level.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |