vertical lines after installing TMC2208

Comments

• Samuel Pinches Posts: 2,997Administrator

  September 2020

  Hi defaveri! Wow, that's strange that it only happened after changing the stepper drivers, because that certainly looks like a mechanical vibration of some kind - but changing them back to confirm would probably be a pain I imagine. Are the ripples on both X and Y? Perhaps the stepper drivers are defective in some way? Really not sure sorry.
  
• michalko99 Posts: 153Member, 🌟 Super Member 🌟

  September 2020

  Hello. From pictures I can see, that your inner shell and infill looks OK(first picture-separated leg without infill and part of infill).
  This leads me to high outer layer speed in Cura. On my TMC setup I am using maximum 55mm/s speed. Which is yours? Please post picture of Cura. The biggest circle shows also some overshoot, so maybe also acceleration snd jerk settings are wrong.
  
  
  After changing drivers to TMC, you have to completely tune your printer from beginning-nothing stays in stock..
  
  Attached is my setting. I am using Cura 4.7.1. Usually I have disabled autoupdates, but I needed new feature(small hole max size and small feature initial speed) for printing large amount of holes on bottom layer to keep them adhered on glass
  
  
• defaveri Posts: 11Member

  September 2020

  Hi @Samuel Pinches and @michalko99  ! 
  
  Unfortunately during some adjustments I ended up damaging the touch display and I was unable to proceed with the tests. I bought another one and it is on its way to exchange and as soon as I do I will continue the tests and return with answers.
  
   I'm using a speed of 20mm / s for the external wall. As you said, the problems probably refer to jerk and acceleration, but I can only be sure after arriving the new display as I said above. Thank you for sharing your profile screen. I have not activated the jerk option, I leave it on automatic, but it may be necessary to adjust in the firmware. I will return here as soon as I am in condition.

  
  

  Thank you friends!
• michalko99 Posts: 153Member, 🌟 Super Member 🌟

  September 2020

  ok then. You must consider that A5 hotbed is not as lightweight as Anet or similar. It must be slower, because you have to accelerate and brake significantly higher mass

  Thanked by 1Samuel Pinches
• defaveri Posts: 11Member

  October 2020 edited October 2020

  Hi @michalko99 , i received de display touch and replace the damaged one. I compiled Samuel's marlin and display firmware in version 1.1.9c and i changed the jerk and acceleration values ​​directly on the marlin but it didn't work. Vertical lines continue.
  

  I didn't mention it, but I replaced the linear bearings with Igus Drylin, which are much quieter and smoother, but I believe they are not responsible for the lines.

  On the TMC2208 drivers, I applied 0.85V on X and 1.25V on Y, following this @Samuel Pinches
   tutorial https://jgaurorawiki.com/a5/silent-stepper-driver-tmc2208
  I still can't understand why these lines and I don't see a way to solve this problem.
  Thanks a lot!

  Post edited by defaveri on October 2020
• michalko99 Posts: 153Member, 🌟 Super Member 🌟

  October 2020

  My A5 is also running on TMCs and custom firmware from this forum. X axis has polymer bearings, Y axis MISUMI ball bearings. 
  Try to print cylinder and normal cube in VASE mode how it will look like. In VASE mode(without infill) you will have only walls printed. Cylinder will have constant movement of X and Y, so there you should see smoothness of movement..
  
  Check also belts tension. Avoid too tight and too loose tension
  
  Also cura settings would be good to see. There is still <by me bug> that if you change some settings and then disable them, they are still active