Latest marlin firmware for TAZ 5

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Sebastian
Posts: 514
Joined: Sun Sep 13, 2015 5:54 am

Re: Latest marlin firmware for TAZ 5

Post by Sebastian » Sun Mar 27, 2016 3:40 am

I just recongnised I set the baudrate to maximum, see my edit above:

.) Baud rate is set to 250000 - be sure to set it back to 115200 when using your printer with Linux!

Good for Windows, but as far as I know Linux doesn't like that speed.

billyd
Posts: 234
Joined: Thu Mar 12, 2015 11:06 pm

Re: Latest marlin firmware for TAZ 5

Post by billyd » Sun Mar 27, 2016 10:26 pm

Thanks I will try this version and see if it still breaks my custom bed. Hope not really liked the firmware otherwise.

keith
Posts: 22
Joined: Tue May 14, 2013 12:51 pm

Re: Latest marlin firmware for TAZ 5

Post by keith » Mon Apr 18, 2016 7:56 am

In case anyone finds them useful, I posted my modifications to TAZ 6 which includes the latest Marlin firmware and auto leveling:

http://www.thingiverse.com/thing:1499551

Sebastian
Posts: 514
Joined: Sun Sep 13, 2015 5:54 am

Re: Latest marlin firmware for TAZ 5

Post by Sebastian » Wed Apr 20, 2016 8:54 am

If someone want's to try my new Advance feature, here is my Marlin TAZ5 version with in enabled :)
It is calibrated for our extruder, so no further changes should be needed. You may increase your print speed - see what happens to your print quality compared to your old parts!
Note that:
.) It is only able to work with 1 extruder at the moment. If you have the dual extruder head, be sure to only use the first one if you want to try this!
.) Be sure to disable all pressure control system in your slicer! For example: Extra start length after retract, coast at end, pressure advance and simmilar.

Changes to stock Marlin:
.) Advance feature integrated
.) Baud rate is set to 250000 - be sure to set it back to 115200 when using your printer with Linux!
.) Acceleration is set to 1100mm/s² - OK if you have the Obenbuilds X and Y axis Mod. If not, set it back to 500mm/s².
.) TAZ specific values added (steps/mm, ..)
.) New value in 1.1 "Travel acceleration" set to 1200
.) Enabled FW retraction with my best values for that
.) Enabled SD Support (of course..)
.) Reduced extruder acceleration from 3000 to 2400. 3000 is TAZ 5 default, but thats to high. Extruder is missing steps, resulting in blobs when unretracting. 2400 is the highest safe value for my extruder.
.) Enabled filament change possibility
.) Preheat options for PLA, PETG and ABS
.) All "Lulzbot-specific" changes (only Boot logo and another font, to be precise ;) )

Have fun, at your own risk as always :)
Attachments
Marlin 1.1-RC4-ADVANCE.rar
(836.01 KiB) Downloaded 89 times
Last edited by Sebastian on Thu Apr 21, 2016 12:47 pm, edited 1 time in total.

keith
Posts: 22
Joined: Tue May 14, 2013 12:51 pm

Re: Latest marlin firmware for TAZ 5

Post by keith » Wed Apr 20, 2016 8:59 am

What is the Advanced feature?

Sebastian
Posts: 514
Joined: Sun Sep 13, 2015 5:54 am

Re: Latest marlin firmware for TAZ 5

Post by Sebastian » Wed Apr 20, 2016 9:11 am

See here: viewtopic.php?f=18&t=4296

You know bleeding edges if you print something with hard edges like a cube, or rough area on the outside of top infill? That's due to Marlin isn't taking the nozzle pressure into account for it's movement calculations. Advance compensates for the fact that the filament between the hobbed bolt and the nozzle is acting like a spring. Print a test cube with your current Firmware, be sure to use a print speed that is not too low (40mm/s for perimeters and 40mm/s for infill maybe?). Reprint using this firmware and compare ;)

keith
Posts: 22
Joined: Tue May 14, 2013 12:51 pm

Re: Latest marlin firmware for TAZ 5

Post by keith » Wed Apr 20, 2016 9:16 am

Nice work!

Sebastian
Posts: 514
Joined: Sun Sep 13, 2015 5:54 am

Re: Latest marlin firmware for TAZ 5

Post by Sebastian » Thu Apr 21, 2016 12:48 pm

There was a bug in the version I uploaded yesterday. It leads to heavy over extrusion, please update if anyone is using it!
The file now attached is bugfree - at last I hope. My prints are nice at least :)

keith
Posts: 22
Joined: Tue May 14, 2013 12:51 pm

Re: Latest marlin firmware for TAZ 5

Post by keith » Thu Apr 21, 2016 12:54 pm

I saw that you created a Github repository. Is that the same code base?

I realized during a print last night that I probably don't see the same issues as you. I print relatively slowly. What speeds (mm/s) do you typically use? I am usually under 50mm/s.

Sebastian
Posts: 514
Joined: Sun Sep 13, 2015 5:54 am

Re: Latest marlin firmware for TAZ 5

Post by Sebastian » Thu Apr 21, 2016 1:23 pm

This branch includes my latest advance code. Github Branch
But the base is a raw Marlin RC5, so you would have to configure it for a TAZ 5. I created it to give other Marlin developers the possibility to test the code before I create a pull request in the hope that it finds it's way into the main Marlin.

The overextrusion issue is nearly only visible if you have small details with 100% infill in your prints. Than every % of extrusion counts or you get blobs. For normal parts, it was working.

I'm still in the process if finding my max print speed where I get nice prints. At the moment I'm using values between 60-80mm/s for 0.2mm layer height.

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