Firmware 3.2.0-RC2 for Original Prusa i3 MK3  

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

More observations:
General printing works just fine, today I started the Prusa Vase (from the included SD-Card).

At ~25% the printer detected a crash and rehomed
At ~40% the heating was turned off (bed and hotend). I was luckily that I noticed that, I paused the print and manually set back the temperature.

Very weired

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Will fw 3.2.0 have the PWM update for the PSU clicking issue? Josef discussed it here: https://twitter.com/josefprusa/status/946829608883716101

If it's already in the latest fw, then it's not working for me as I still find it mildly annoying. I guess the only other way around it is to find a different power supply. That or I need to get older so my hearing gets worse. 😉

-Jeff

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

So far so good, a substantial improvement to print quality for me. Before I was constantly having to adjust Live-Z and use bed level correction to get at best a middling first-layer. I'm guessing due to the discoveries and improvements by stahlfabrik, the first layer so far was pretty much spot on without any correction at all. Here's hoping it wasn't a fluke! Before the mesh levelling was quite eclectic between prints. Top layer seems to be massively improved too, nice and smooth. All in all, really liking this update so far, if it continues to behave like it seems to be - definitely how the printer should have been at release.

As recommended earlier in the thread I dropped my PINDA probe down. From a Live-Z of about -0.500, to -0.870.
Full calibration went smoothly, no dragging of the paper and still got a perpendicular result from XYZ as with previous firmware.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Did 5 temperature calibrations starting at around 22°C ambient temperature (read from support/temperature menu) and viewed the table with the M861 ? command via Octoprint terminal window.

Here is the output:

Send: M861 ?
Recv: PINDA cal status: 1
Recv: index, temp, ustep, um
Recv: n/a, 35, 0, 0.00
Recv: 0, 40, 29, 72.50
Recv: 1, 45, 38, 95.00
Recv: 2, 50, 59, 147.50
Recv: 3, 55, 72, 180.00
Recv: 4, 60, 103, 257.50
Recv: ok

Send: M861 ?
Recv: PINDA cal status: 1
Recv: index, temp, ustep, um
Recv: n/a, 35, 0, 0.00
Recv: 0, 40, 38, 95.00
Recv: 1, 45, 50, 125.00
Recv: 2, 50, 71, 177.50
Recv: 3, 55, 87, 217.50
Recv: 4, 60, 122, 305.00
Recv: ok

Send: M861 ?
Recv: PINDA cal status: 1
Recv: index, temp, ustep, um
Recv: n/a, 35, 0, 0.00
Recv: 0, 40, 30, 75.00
Recv: 1, 45, 38, 95.00
Recv: 2, 50, 58, 145.00
Recv: 3, 55, 79, 197.50
Recv: 4, 60, 114, 285.00
Recv: ok

Send: M861 ?
Recv: PINDA cal status: 1
Recv: index, temp, ustep, um
Recv: n/a, 35, 0, 0.00
Recv: 0, 40, 31, 77.50
Recv: 1, 45, 39, 97.50
Recv: 2, 50, 42, 105.00
Recv: 3, 55, 64, 160.00
Recv: 4, 60, 101, 252.50
Recv: ok

Send: M861 ?
Recv: PINDA cal status: 1
Recv: index, temp, ustep, um
Recv: n/a, 35, 0, 0.00
Recv: 0, 40, 27, 67.50
Recv: 1, 45, 35, 87.50
Recv: 2, 50, 40, 100.00
Recv: 3, 55, 55, 137.50
Recv: 4, 60, 96, 240.00
Recv: ok

Greatest difference for a point is 80 µm, highlighted in red.

I'm puzzled about the variance. Don't think both values can produce a good first layer.

Either there is a mechanical issue with my MK3 or the temperature calibration routine is not capable to generate reliable results.

Would like to see your results of multiple temperature calibrations to rule out any issues specific to my printer.

Pete

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Calibration runs fine.
...But i aint got problems in RC1 so far.

Testcube looks like this:

I also attached the s3d factory file for this cube. Maybe someone can use it for something.
3.2.0-RC2 works absolutely fine for me.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

I am running 3.2.0-rc2 -534

no problems so far...tallest print since change 25mm

running at 92% flow...seemed to have a bit of over extrusion... but this may be due to small surface features

regards Joan

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Can please somebody try if the temperatures and fan go to zero after a Filament-runout?

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

The only issue I have had at this point is with about 50% of the time 9 point mesh bed level checks fail and force a reset. I know they have committed a change to hopefully improve the threshold in the Z axis check that should be available in RC3. Other than this the Linear Advance and Linearity correction is awesome. When I enabled Linearity correction and set it for 1.11 which seems to produce a pretty good result I have found that I am under extruding. I need a multiplier of 1.1 in order to get my dimensions accurate again. I have been a primary user of s3d but decided to try the latest beta of Slic3r. After looking at all the work they have put into the prusa version of Slic3r and now finding that all this works does actually make a huge difference I think I am going to move to Slic3r. s3d has some great tools but unfortunately they are falling behind on the needs for refined settings for speed acceleration and per filament customization. Slic3r is way better in this regard. I would recommend using the Prusa version of Slic3r with the newest firmware features.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Hi Tobias,

I cut my filament, the sensor detected the failure, the stump correctly ejected,
new filament inserted fine. autoload did the business...
and the print continued, without failure, the temps did not change

regards Joan

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Can please somebody try if the temperatures and fan go to zero after a Filament-runout?

My sensor tripped (unnecesarilly, though) yesterday while i was away, so when i came back printer message was: "heating disabled by safety timer". So i guess that printer waits certain time and then shuts off as a safty feature.

When I enabled Linearity correction...
what do you mean by that? Enabled in slic3r?

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

3.2.0-RC2 will wait for 30 minutes then shut off the heaters. RC1 was 15 minutes IIRC.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Since updating I haven't been able to finish the setup wizard. It gets to the live z adjust calibration and shows a blank screen and sometimes other giberish and I can't move past it...

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

When I enabled Linearity correction...
what do you mean by that? Enabled in slic3r?

This feature (Linearity Correction) became available in RC2 and is discussed a little bit in
https://shop.prusa3d.com/forum/hardware-firmware-and-software-help-f64/how-to-use-and-tune-the-new-linearity-correction--t17470.html
You enable it under the settings menu. I believe they call it E correction or something like that. Disabled by default.
You can look at the github discussion about it provided in one of the posts. Joseph also indicated it was coming in this blog post.
https://www.prusaprinters.org/original-prusa-i3-mk3-3-months/
Not a lot of information on it yet but there is a gcode test provided in the posts and also some starting settings listed. The little bit that I have played with it i have noticed my print quality getting better.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Thanks for the answers about the filament sensor, i did the "Wizard" again today, after that it works well again 🙂

Strange that the Firmware not asked for it after the update, everything else worked fine without "re-wizarding".

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

I am on my third PLA print after applying 3.2.0-RC2. No extruder clicking of filament jams so far! YAY! 😀

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Just upgraded my MK 3 firmware and went to print only to get this message. Bed leveling failed, sensor did not trigger, debris on nozzle? waiting for a reset. The head touches down 1 and 2 and then on the third one it does not and I get the message. Help

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Just tried RC2. Still buggy on my MK3

• Corrupt text on screen when going thru the calibration wizard when it asks to remove the steel sheet. After that, all the text is corrupt.
• The initial bed levelling calibration after removing the steel sheet makes the nozzle drag the paper around the bed, despite never having this issue with release grade software. My nozzle offset has always been around -0.725 when building it, I used the cable tie method to get the height of the PINDA.

I performed a full factory reset after the firmware update, so something is still not right with this release of software.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Just tried RC2. Still buggy on my MK3

• Corrupt text on screen when going thru the calibration wizard when it asks to remove the steel sheet. After that, all the text is corrupt.
• The initial bed levelling calibration after removing the steel sheet makes the nozzle drag the paper around the bed, despite never having this issue with release grade software. My nozzle offset has always been around -0.725 when building it, I used the cable tie method to get the height of the PINDA.

I performed a full factory reset after the firmware update, so something is still not right with this release of software.

The screen corruption is a common side effect of poor grounding in the MK3 electronics. When you touch the LCD, a little static charge is zapping it and causing it to lose its state. To see if this is the issue, try grounding yourself out before touching the screen.

On the crashing into the bed, I had this issue with RC1 (haven't tried RC2 yet because my Mk3 is in pieces ATM). In RC1, the fix was to lower the PINDA probe - lower than you could get it with the cable tie method. My nozzle offset ended up being around -1.0, and it past calibration and worked much better than it did previously.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Just upgraded my MK 3 firmware and went to print only to get this message. Bed leveling failed, sensor did not trigger, debris on nozzle? waiting for a reset. The head touches down 1 and 2 and then on the third one it does not and I get the message. Help

Anytime I've seen this it's been that the x axis is not quite straight, i.e. one of your z axis motors is out of sync, recalibrate XYZ and it should fix it hopefully.

Re: Firmware 3.2.0-RC2 for Original Prusa i3 MK3

Just upgraded my MK 3 firmware and went to print only to get this message. Bed leveling failed, sensor did not trigger, debris on nozzle? waiting for a reset. The head touches down 1 and 2 and then on the third one it does not and I get the message. Help

Don't worry, it's a bug in RC2 already reported and fixed. Roll back to RC1 or earlier for now.