Lengthened PTFE from 360 to 510mm; how to change MMU code?  

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Z axis is ?

Sorry, but there's nothing else I can think of 🙁

Maybe you could PM Waldemar: https://shop.prusa3d.com/forum/memberlist.php?mode=viewprofile&u=12252 He regularly compiles the firmware.

Peter

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Will do. Thank you for all your help, too. 🙂

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Hi,

1st sorry for the late answer but didn't get any notification that i got a PM.

What i understand is:
1. You have a modified Prusa MK3 with much higher z axis, right?
1.a. You set your #define Z_MAX_POS from 210 to 350 and you cannot xyz- or z-calibrate it and get a "?" on the LCD screen
2. You have a MMU2 and need much longer bowden length due your modified MK3, right?

Here some tips i can give you:
To solve issue 1 / 1.a:
Try https://github.com/3d-gussner/Prusa-Firmware/wiki/How-to:-Build-Prusa-Firmware

and

Find in "Firmware/ultralcd.cpp"
switch (axis) {
case 0: axis_length = X_MAX_POS; break;
case 1: axis_length = Y_MAX_POS + 8; break;

and modify it to

switch (axis) {
case 0: axis_length = X_MAX_POS; break;
case 1: axis_length = Y_MAX_POS + 8; break;
case 2: axis_length = Z_MAX_POS; break;


If you have a modified MK3 you should also consider to pull https://github.com/prusa3d/Prusa-Firmware/pull/1263

I used these changes for the Zaribo Firmware https://github.com/Zaribo/Zaribo-Firmware/tree/Zaribo-MK3 https://github.com/Zaribo/Zaribo-Firmware/releases

To solve issue 2:
Don't know how far Prusa MMU2 firmware allows to extend the bowden length.
I see lot of people having great results with the modified MMU2+MK3 firmware from TheZeroBeast https://github.com/TheZeroBeast/MM-control-01/releases

At this moment his Prusa-Firmware branch also missed the case 2: axis_length = Z_MAX_POS; break; part and the pull request i mentioned above.

Hope that helps.

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Wow. Thank you! Yeah, I don't get PM notifications either 🙁
I will look through everything you sent and post if I have any questions. Thanks again 🙂

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Wow. Thank you! Yeah, I don't get PM notifications either 🙁
I will look through everything you sent and post if I have any questions. Thanks again 🙂

Just hope that solves your issue. If you have any other questions let me know via this post or an issue on my Github. These at least send notifications 🙂

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Hint: Edit your notification settings in the User Control Panel

Peter

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Hint: Edit your notification settings in the User Control Panel

Peter

Thanks Peter ... found it 🙂

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Ok waldemar.g, you have fixed my problems. Thank you thank you thank you thank you thank you! 😀 It was a conflict in the ultralcd.cpp that was causing the ?, I think.
Wishing you a safe and happy Christmas and new year, forever grateful!

Fairfarren

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Ok waldemar.g, you have fixed my problems. Thank you thank you thank you thank you thank you! 😀 It was a conflict in the ultralcd.cpp that was causing the ?, I think.
Wishing you a safe and happy Christmas and new year, forever grateful!

Fairfarren

Also Merry Christmas and a happy new year.

Glad it worked out for you and I could help.

As said consider the TheZeroBeast firmware as I think Robert did a great job.

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Ok, do you know where I find the MK3 5.0.4 RC4 firmware for the printer? I have the firmware for the MMU, and that works fine, but because it's now not aligned with the printer firmware, the printer responds like a single head MK3 again and no longer has menu options for loading filaments through the MMU system.
I got the MMU firmware 2.1.5 from https://github.com/TheZeroBeast/MM-control-01/releases and there is spoken of the MK3 firmware but nowhere to download the source code.

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Ok, do you know where I find the MK3 5.0.4 RC4 firmware for the printer? I have the firmware for the MMU, and that works fine, but because it's now not aligned with the printer firmware, the printer responds like a single head MK3 again and no longer has menu options for loading filaments through the MMU system.
I got the MMU firmware 2.1.5 from https://github.com/TheZeroBeast/MM-control-01/releases and there is spoken of the MK3 firmware but nowhere to download the source code.

Hi best is to ask Robert TheZeroBeast that he updates his Prusa-Firmware github repository. Open an issue on github and he will answer very soon.

Re: Lengthened PTFE from 360 to 510mm; how to change MMU code?

Ok, do you know where I find the MK3 5.0.4 RC4 firmware for the printer? I have the firmware for the MMU, and that works fine, but because it's now not aligned with the printer firmware, the printer responds like a single head MK3 again and no longer has menu options for loading filaments through the MMU system.
I got the MMU firmware 2.1.5 from https://github.com/TheZeroBeast/MM-control-01/releases and there is spoken of the MK3 firmware but nowhere to download the source code.

Hi best is to ask Robert TheZeroBeast that he updates his Prusa-Firmware github repository. Open an issue on github and he will answer very soon.

He answered with a link to https://github.com/TheZeroBeast/Prusa-Firmware which is great, but... When I verify the build, Arduino throws up a whole A4 page of errors. Yay. So back to work 😥