RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Flashed my MK3S using PrusaSlicer 2.0 and did a fresh run through the setup wizard, everything looks good so far! As someone who tinkers and recalibrates regularly I definitely appreciate the simplified fan check.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

[Sticky] Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3  

then

Hi guys,
This firmware 3.2.3 is the final version of firmware version 3.2.2 RC1 for MK2/S, which contains important safety improvement in preheat error and also chosen features from MK3S branch.

So which is it?  3.2.3 or 3.7.2 ?

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Updated both my MK3s and my MK3s-MMU2s printers.

The simplified fancheck is a nice feature.

Also the improvements of the repeated power panic, will test that some more tomorrow.

Both printers printing steadily for now.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Quick question, for the fan check update, I it checking both fans? My part cooling fan speed sensor wire broke during assembly of  the first extruder update. How will this effect the check?

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

motors warms...

after 2 hours, 25°C ambient

extruder 55°C

X 45°C

YL 41°C YR 40°C

Z 43°C

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Posted by: Tim

So which is it?  3.2.3 or 3.7.2 ?

Hi, it is 3.7.2-RC1, the text was corrected. Thanks

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Posted by: lewellyn.f

Quick question, for the fan check update, I it checking both fans? My part cooling fan speed sensor wire broke during assembly of  the first extruder update. How will this effect the check?

I looked through the code and it does appear to be checking both fans, but I'm still trying to work out what the behavior is supposed to be when a fan reports failure (as I'd assume it would with a zero or null speed returned). I'll update if I find anything, but hopefully someone more authoritative can clarify.

Or if you're feeling adventurous you could flash it yourself and let us know what happens. 😉 

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Posted by: patrick.s50

Posted by: lewellyn.f

Quick question, for the fan check update, I it checking both fans? My part cooling fan speed sensor wire broke during assembly of  the first extruder update. How will this effect the check?

I looked through the code and it does appear to be checking both fans, but I'm still trying to work out what the behavior is supposed to be when a fan reports failure (as I'd assume it would with a zero or null speed returned). I'll update if I find anything, but hopefully someone more authoritative can clarify.

Or if you're feeling adventurous you could flash it yourself and let us know what happens. 😉 

One of the failures is if the fans are swapped, they have different RPM readings so it checks that the correct (blower, IIRC) fan has a faster RPM at a than the other. Naturally, a zero RPM reading when the fan is powered would also be a failure.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Posted by: vintagepc

Naturally, a zero RPM reading when the fan is powered would also be a failure.

Right, but will the printer still operate despite such a failure? (And if you're up for helping a novice educate himself, could you point me to the code that dictates that?) I think what @lewellyn-f is wanting to know, and what I was trying to extrapolate, is if it's possible to complete the self-test and continue operating the printer with the print fan failing to report its speed. The extruder fan is vital and I'd expect the printer not to operate without it passing testing (also implied by the "Known issue: Fan check" above), but I think it's fair to consider the print fan optional and not a failure that should bar printer operation.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

I updated my MK3S to this firmware and ran a Wizard. Strangely enough it said that my XY axes are slightly skewed. Though each time I ran a Wizard before, it said that my axes are perfectly perpendicular... Was there a change in the calibration procedure or did my printer just wobble itself out of tune in between Wizards? 

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Posted by: asakurasoil

I updated my MK3S to this firmware and ran a Wizard. Strangely enough it said that my XY axes are slightly skewed. Though each time I ran a Wizard before, it said that my axes are perfectly perpendicular... Was there a change in the calibration procedure or did my printer just wobble itself out of tune in between Wizards? 

I've seen it drift a little from run to run; it's possible you just edged over the threshold and if you were to run it again it'd be normal. You can check the actual value in the "support" menu, IIRC "perpendicular" is considered < 0.12 degrees of skew.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Thanks, I will try it again

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

I follow if it aint broke for me, don't fix it. I hold off until full firmware release and even then wait a few weeks for user feedback.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

works fine for me but did not print any spectacular objects untill now. 

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

no issues here, printed a number of assorted things in PETG and PLA.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Correction: There appears to be a firmware bug on filament load that causes the X axis to start moving and then crash into the right hand end stop. Attempting to reproduce and document.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

So far it's happened twice when changing filament with a colour change - I've hit "no" 2-3 times because I was going from dark to light coloured filament, and on the final time when hitting "yes", the X axis will slowly start to move right and keep moving right. The X motor starts skipping steps once it hits the right end stop.

I tried to capture it on video but of course it won't do it now, or there's a non-obvious step I'm missing.

RE: Firmware 3.7.2-RC1 for Original Prusa i3 MK3S & MK3

Upgraded my MK3S with the new firmware and found no issues.