4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Hello all. Here is our latest release candidate for the firmware for our Prusa Mini;
Summary
- Support for PrusaSlicer 2.4
- Time Zones extended
- Satin sheet profiles added
The main focus of this release is on extending the support for the upcoming PrusaSlicer 2.4. There are also some other improvements requested by the community.
Support for PrusaSlicer 2.4
The PrusaSlicer 2.4 is currently in the beta stage and you can read more about its new features here. Some of the changes introduced in version 2.4 have a direct impact on the firmware and in order to work correctly, the developers had to make some adjustments.
Starting with version 2.4, the G-codes have a larger allocation for the context information, which is located at the end of the G-code. Previously, it was enough to read the last 10 KB, however now it is necessary to extend the search for the last 20 KB (similar to the MK3 family). Thanks to this adjustment the printer is now able to correctly read the type of the filament, its usage and display it correctly on the print preview screen.
Time Zones extended
Starting with firmware 4.1.0 the printer is able to connect with the NTP servers and get the UTC time (assuming it is connected to the internet). The user then sets the correct Time Zone of the printer's location with respect to the UTC. Once all is set, the printer is able to provide the exact time in which the running print will be finished.
The list of the Time Zones was extended for this release and enables setting the difference to +14 (the previous limit was +12). This extension allows community members in New Zealand and surrounding Pacific islands to set the time correctly.
Satin sheet profiles added
In case the MINI or MINI+ are used with multiple types of steel print sheets, it is recommended to use the feature “Print sheet profiles”, which enables the user to store individual values of “Live adjust Z” for each steel sheet.
The factory list previously included profiles for Smooth and Textured sheets. This release extends this list with profiles for Satin sheets. However, please note that this is just about the names of the profiles. The factory settings for each profile are the same regardless of the name. The profiles Custom1 and Custom2 will be renamed Satin1 and Satin2.
In order to rename the profiles, a factory reset must be performed. Before this operation is performed, it is recommended to write down the current “Live adjust Z” value and use it later during recalibration.
Supported printer:
Original Prusa MINI / Original Prusa MINI+
Download Link:
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v4.3.4-RC
How to flash the firmware on MINI:
Copy the firmware file (.bbf) onto the USB drive with FAT32 formatting Insert the flash drive in the MINI's USB port Turn the printer ON (or reboot it) A new screen will appear Confirm you want to flash the firmware
Please report any bug here:
github.com/prusa3d/Prusa-Firmware-Buddy/issues
As always, we wish you happy printing and look forward to your feedback!
Shane (AKA FromPrusa)
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Wouldn't it have been easier to just enable renaming of the profiles? Similar to the i3 implementation.
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
In order to rename the profiles, a factory reset must be performed.
Does that mean I'll lose print statistics (Odometer)? 😭
Nejsem zaměstnancem Prusa Research.
RE:
Hi
Is it mandatory or just recommended to install this latest RC firmware if we use 2.4 PrusaSlicer beta version?
Thanks
JC
Prusa MINI+ at home / Prusa MK3S+ in the Fab Lab / You can have a look at my designs here printables.com
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Judging based on the announcement "...it was enough to read the last 10 KB, however now it is necessary to extend the search for the last 20 KB...", your mileage will vary. If yu use slicer 2.4 or newer and it generates largish G code (over 10 kB) your print won't come out as you expect it to. What goes wrong depends on the implementation, Mini might just skip the overflowing part, it might stop with an error code, or it may explode and burn. Hard to say.
I already installed the RC and at least Benchy with old gcode came out just fine.
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Thanks for feedback
No printing pb (nor explosion or burn) so far with 4.3.3 firmware and using 2.4.0 beta 3 PrusaSlicer even for large gcode with 12h printing
But will install and test 4.3.4 RC firmware
JC
Prusa MINI+ at home / Prusa MK3S+ in the Fab Lab / You can have a look at my designs here printables.com
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Its not the size of the gcode file, its about the size of the context part at the end of the gcode file, you know, those lines starting with semicolon (";"). Example:
; complete_objects = 0 ; cooling = 1 ; cooling_tube_length = 5 ; cooling_tube_retraction = 91.5 ; default_acceleration = 1250 ; default_filament_profile = "Prusament PLA" ; default_print_profile = 0.15mm QUALITY @MINI ; deretract_speed = 40 ; disable_fan_first_layers = 3
So the section for those at the end was ~10 kB, now they are pushing even more of the stuff, so 20 kB from the end of the file is where the Mini will start searching for those lines.
RE: 4.3.4-RC Firmware for Original Prusa MINI/MINI+ is out!
Ok that's more clear for me now. Thanks for your detailed explanations 👍
JC
Prusa MINI+ at home / Prusa MK3S+ in the Fab Lab / You can have a look at my designs here printables.com