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jakub.d
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Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 10:49 am

Hi there,
new version of firmware 3.3.1 is out! This is a final version recommended to all MK3 and MK2.5 owners ;)


What is new:

MK3 & MK2.5:

- Filament statistics fix: fixed issue #901 where "filament used" statics wasn't counted properly
- G28 fix: fixed issue #924 where missing OK after G28 (auto home) could cause communication timeouts
- Setup function fix: splash screen fix, factory reset -> Shipping prep. enables filament sensor
- Load filament improvement: if nozzle is lower than 20 mm on Z-axis during filament loading, the nozzle will move up to ensure more space for nozzle cleaning


Supported printers:
This firmware supports Original Prusa i3 MK3 and MK2.5

Download link and description:
https://github.com/prusa3d/Prusa-Firmwa ... tag/v3.3.1

Firmware flashing guide:
http://manual.prusa3d.com/Guide/Upgradi ... 66?lang=en
Note: Use the latest Slic3r PE 1.40.1 or newest to flash other languages for the MK3.

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!
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andre.l9
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 11:47 am

Same issue with 3.3.1 "External SPI flash W25X20CL no responding" no way to flash fw, still working with 3.2.1.

https://github.com/prusa3d/Prusa-Firmware/issues/896

neil.k2
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 1:11 pm

Can somebody review the build environment description - it would sure be nice to get a list of the libraries loaded and compiler settings (platform.txt) on the Prusa development box that produces the 'public' firmware.

I need to compile locally as I use PT100 with amp but my compiled 'hex' code is coming out at 652kb vs the 'official' hex code at 807kb.

I'm additionally concerned because I'm seeing some really odd behaviour. I often need to reset between prints, sometimes the heating completes but printing doesn't start, occasional character corruption on the LCD, I'm also seeing what appear to be incorrect ADC counts on the PT100 - but the temperature seems OK, I'm also getting some odd errors in the print of items that were previously fine. I tried the 1.39.2 version of slicer and the defects remain - defects that weren't there previously - so I think something is going wrong in the build process.

tomasz.l
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 1:15 pm

I took closer look on board with firmware upgrade issues.
The problem is... there's no W25X20CL chip on board!
These boards were produced in several versions,
I got one referenced by assembly manual as version A (without add-on board).
Take closer look at the left side and compare it with that pic: https://ultimachine.com/products/einsy-rambo-1-1
These 3 chips near Z-axis connectors are U12 - U14 on schematic: https://github.com/ultimachine/Einsy-Ra ... o_1.1a.PDF
Sheet 5 on bottom of page.
So this is hardware issue - probably first versions were produced without 2Mb SPI flash.
If you have R-packs (resistors) instead of chips and no add-on board the new firmware would not load.

Board with add-on has 3 chips on it, and I'm quite sure these are missing buffers and SPI Flash.
There were no problem since deevlopers started using SPI Flash ;-)

So I need to contact suport for add-on or replacement.

andre.l9
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 1:35 pm

tomasz.l wrote:
Jul 23, 2018 1:15 pm
I took closer look on board with firmware upgrade issues.
The problem is... there's no W25X20CL chip on board!
These boards were produced in several versions,
I got one referenced by assembly manual as version A (without add-on board).
Take closer look at the left side and compare it with that pic: https://ultimachine.com/products/einsy-rambo-1-1
These 3 chips near Z-axis connectors are U12 - U14 on schematic: https://github.com/ultimachine/Einsy-Ra ... o_1.1a.PDF
Sheet 5 on bottom of page.
So this is hardware issue - probably first versions were produced without 2Mb SPI flash.
If you have R-packs (resistors) instead of chips and no add-on board the new firmware would not load.

Board with add-on has 3 chips on it, and I'm quite sure these are missing buffers and SPI Flash.
There were no problem since deevlopers started using SPI Flash ;-)

So I need to contact suport for add-on or replacement.
Hi tomasz

I agree with you, I have also the A board, I suspected something like that since I was unable to flash fw 3.3.0, I talked about my doubt about A and B Einsy boards in my first posts about this issue and reported it on Github, glad to hear that you identified the reason.

dryja123
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 3:26 pm

Now the screen flickers when you're looking at the print statistics. This is the only option that makes my screen flicker in and out. I'll open a bug report.

marilyne.b
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 23, 2018 5:51 pm

Hi,

Have you considered joining this effort https://fwupd.org/ (vendor list https://fwupd.org/vendorlist)?
That would be cool to get Prusa firmware updates through your software center on linux :).

Best regards,
Alexis.

cindy.h3
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 24, 2018 10:09 am

marilyne.b wrote:
Jul 23, 2018 5:51 pm
Hi,

Have you considered joining this effort https://fwupd.org/ (vendor list https://fwupd.org/vendorlist)?
That would be cool to get Prusa firmware updates through your software center on linux :).

Best regards,
Alexis.
+1
Cheers,
Jon

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jakub.d
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 24, 2018 11:33 am

andre.l9 wrote:
Jul 23, 2018 11:47 am
Same issue with 3.3.1 "External SPI flash W25X20CL no responding" no way to flash fw, still working with 3.2.1.
...
We are on it ;)
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andre.l9
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Re: Firmware 3.3.1 for Original Prusa i3 MK3

Jul 24, 2018 5:11 pm

jakub.d wrote:
Jul 24, 2018 11:33 am
andre.l9 wrote:
Jul 23, 2018 11:47 am
Same issue with 3.3.1 "External SPI flash W25X20CL no responding" no way to flash fw, still working with 3.2.1.
...
We are on it ;)
Good news... hope you will fix it soon.

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