Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
UPDATE: Final version is out https://shop.prusa3d.com/forum/general-discussion-announcements-and-releases-f53/firmware-3-6-0-final-for-original-prusa-i3-mmu2s-m-t28162.html
WARNING: Note that MK3S, MK3, MK2.5 and MK2.5 are different printers! Each has its own firmware file!!!
Hi guys,
this is an upgrade of the firmware for the Original Prusa i3 printer. Keep in mind this a release candidate (testing version) for experienced users 😎
What is new?
-> Initial version for MK3S and MK2.5S printers with MMU2 unit
-> Smarter load to nozzle/unload/eject function for multi material printers and single material version improved
-> Stop print during filament change fixed
Initial version for MK3S and MK2.5S printers with MMU2 unit
This the first firmware to support MK3S/MK2.5S printer with MMU2 unit. This combination of hardware is officially called MK3S MMU2S or MK2.5S MMU2S.
Smarter load to nozzle/unload/eject function for multi material printers and single material version improved
This feature has been recently added to firmware in 3.5.2-RC1 version, but this initial version has been working only for single material printers (without MMU2 connected). In this firmware version, it has been extended to provide similar function also for multi material printers. We also decided to change function slightly to make it more useful for most users. When a user chooses to load filament (for example) with the cold nozzle for example, preheat menu appears and both nozzle and heatbed are preheated (to save some time later when starting a print) and printer waits for the nozzle to preheat close to the target temperature (5% below target). When preheating is finished, printer beeps and the user can start loading filament. Target temperature remains the same after the load is finished as we assume that most load/unload scenarios precede starting new print.
Stop print during filament change fixed
When stopping print during the T-code execution nozzle could crash into wiping tower. This has been fixed.
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Supported printers:
Original Prusa i3 MK3S MMU2S
Original Prusa i3 MK3S
Original Prusa i3 MK3 MMU2
Original Prusa i3 MK3
Original Prusa i3 MK2.5S MMU2S
Original Prusa i3 MK2.5S
Original Prusa i3 MK2.5 MMU2
Original Prusa i3 MK2.5
Download link:
https://github.com/prusa3d/Prusa-Firmware/releases/tag/v3.6.0-RC1
Firmware flashing guide:
https://manual.prusa3d.com/Guide/Upgrading+the+firmware+v1.5/66
Please report any bug here:
https://github.com/prusa3d/Prusa-Firmware/issues
As always, we wish you happy printing and look forward to your feedback!
/ Knowledge Base
The guy behind Prusa assembly manuals...
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
I'm not sure if any MMU2S upgrades have been shipped yet. If not can we assume that they will begin once 3.6 is released?
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
FWIW, Z calibration is now an issue.
MAX_Z in firmware is still 210mm, but there's now almost 218mm travel available in Z, so if the nozzle is close to the bed, Z will stop at 210 without hitting the upper end stops.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
I'm not sure if any MMU2S upgrades have been shipped yet. If not can we assume that they will begin once 3.6 is released?
Yes, the MMU2S are out in the wild and so is the final version of this FW.
/ Knowledge Base
The guy behind Prusa assembly manuals...
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
FWIW, Z calibration is now an issue.
MAX_Z in firmware is still 210mm, but there's now almost 218mm travel available in Z, so if the nozzle is close to the bed, Z will stop at 210 without hitting the upper end stops.
Peter
The "end stops" are hit during the Z calibration, for the print Z = 210 mm is a max for now.
/ Knowledge Base
The guy behind Prusa assembly manuals...
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
The "end stops" are hit during the Z calibration, for the print Z = 210 mm is a max for now.
Well, when I want to calibrate Z (basically every time I turn on the printer), I just raise the Z axis to the end stops. This does not happen if the nozzle is low down; I have to reset the printer and raise again.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
Prusa has morphed into Bethesda.
i'm not touching my MMU2 to MMU2S conversion for a couple of months until they work out more of these problems.
i'm not happy with the 'S' STLs as there appears to be tolerance issues.
so firmware issues and parts fit issues; why would i take apart my machine only for there to be an announcement of a another big opps where i need to take it apart again two days later.
pretty much that is what happened since i've owned my MK3. I've had to constantly replace parts on it to keep bringing it up to the latest specs and OMG the firmware issues from day one it took over 7 months to get a stable firmware for the MK3 where it would actually print something and even then it had 602 Moire issues.
“One does not simply use a picture as signature on Prusa forumsâ€
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
FWIW, Z calibration is now an issue.
MAX_Z in firmware is still 210mm, but there's now almost 218mm travel available in Z, so if the nozzle is close to the bed, Z will stop at 210 without hitting the upper end stops.
Peter
Peter - is the 218mm Z height in the S because the extruder is smaller now?
Re: Firmware 3.6.0-RC1 for Original Prusa i3 MMU2S & MMU2
Peter - is the 218mm Z height in the S because the extruder is smaller now?
Yes. Actually, I think it's a tad below 218. 217 would be achievable except for the firmware limit.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…