belt response problems

[quasi condor]

I have a v2 350 with carto,canbus, and chaotic labs cnc parts. I cant get pics except screenshots because my phone doesnt connect to my computer. Ive been struggling with getting the belt response in a good place. Im not an expert on reading these graphs so anyones interpratation would be helpful.

I recently put new belts on and am using the carto metal mount

newest

latest, would you change anything on this? If so what should I change

[sterile sable]

install discord onto your phone. That way you can post direct to discord

It is very difficult to us to help you on an issue like belts without seeing pictures

[quasi condor]

I have it, ill post it on that

[hexed mortar]

@sterile sable What else would you like to see

[sterile sable]

Are your belts the same length?
Do you have the same excess of both belts on the left side of toolhead?

Do you have the same excess of both belts on the right side of toolhead?

[quasi condor]

yes,yes,yes

[sterile sable]

What canbus toolhead board are you using? Does it have an adxl?

[quasi condor]

ebb2209 rp2040, yes

[sterile sable]

Are your graphs done with carto/beacon or ebb36?

[quasi condor]

One belt is slightly longer on the stick out

ebb36

[sterile sable]

How many teeth is it different?

[hexed mortar]

2 teetg

[quasi condor]

teeth

[sterile sable]

I would remove the belts and remeasure belt length, unless you are 100%sure they are the same length.

If you are 100% sure then I would redo the belts for that side and make them equal.
After that retension

Doing a little bit equally alternating sides

[quasi condor]

Ill try to make them even

[sterile sable]

Channel your inner yoda

[quasi condor]

lol, its been very frustrating because i had it running before I changed the belts and added carto, now its problem after problem. I cant make any parts for the new vent mod you posted because I have no other printer. Ill get it though

[quasi condor]

You think a missing screw in the cover would make a difference?

[sterile sable]

yes

[quasi condor]

well, i am missing a screw in the cover that holds the fans, ill put it in after i redo these belts and try again

[quasi condor]

This is what I got now

[sterile sable]

did you add the missing screw

How are you measuring belt tension

[quasi condor]

i did, im using adxl

i have no other way to measure belt tension

[sterile sable]

how are you measuring absolute belt tension

[quasi condor]

im not

[sterile sable]

That is an issue

[quasi condor]

i dont have any way to do it

[sterile sable]

Shaketune does not give absolute tension it only gives relative belt tension

Install “easy tension” on your phone and try to get both belts to 110hz

[quasi condor]

ok

[quasi condor]

what type of belt shoul i put in, or should i just use the frequency meter

[sterile sable]

Freq meter in easy tension app

[quasi condor]

pretty sure i found the issue. The belt was off of a pulley i couldnt see until i took the back cover off

Id say that was the problem

[sterile sable]

Nice catch.
Run the input shapers

[quasi condor]

bed mesh calibrate doesnt want to work now but otherwise its back to moving good

[sterile sable]

what is your app telling you the tension is in hz

[quasi condor]

i tried for 110hz but I could never get it, everytime id get one, do the other, recheck the first id be something else

[sterile sable]

what does y axis look like

I recommend the pf makes tension tool
https://west3d.com/products/complete-kit-of-3d-printer-belt-tension-meter-by-pf-makes-special-west3d-edition

[hexed mortar]

@sterile sable ok, thanks for your help. I had to go to bed

[wraith snow]

Any update for us?

[quasi condor]

Its running

[wraith snow]

So u have the tool and could adjust belt tension? Can we get fresh graphs, so we can continue/solve this? 🙂

[quasi condor]

Yep

[wraith snow]

„Yep“ to which of my 2 questions?

[quasi condor]

i have the tool and can check the tension.

Its currently running a print

[quasi condor]

I found a couple of mechanical problems that were causing the issue. The belt was off of the pulley, that seemed to be the major culprit

I couldnt see it until I took the panels off

It was at %97 last time I ran belt comparrison

[wraith snow]

Nice catch. Is the belt still in good shape as in no wear?

[quasi condor]

Theres a strand hanging off of it but I got a pair of new ones, im running these for awhile as they are fairly new.

Doesnt seem to be affecting anything atm

[wraith snow]

Good decision to replace. Usually belts will stretch after a couple of hours, so u might need to check tension.

But new graphs for us would be great

[quasi condor]

Ive since gotten cartographer and sensorless homing running as well

[wraith snow]

Uuuh nice one

[quasi condor]

Might be ahile this print is long

[quasi condor]

So now everytime I try to run belt responses it shuts down and says it has an internal error

[quasi condor]

Got any suggestions for this? I just updated my cartographer yesterday so im not sure if thats the issue

[wraith snow]

are u on the latest klipper version?

if so, that breaks shaketune currently

u can run the following via SSH to rollback and have it working:
Cd klipper
git reset --hard 7f8966
Reboot

[quasi condor]

Ill give this a try, thank you

[quasi condor]

This is the belts comparrison I just ran

[wraith snow]

sorry your message did fall through.

[wraith snow]

can u give us fresh graphs
X
Y
Belts

and print a VORON cube with 3 walls, 5 top bottom, and no infill please? Post pictures of all 4 sides of the cube with good lighting and camera focus

[quasi condor]

yep, give me some time.

latest belt response test

[quasi condor]

Im not sure what you mean by x and y, are there seperate graphs for each axis?

[wraith snow]

Yes

[quasi condor]

How do I find those?

[wraith snow]

https://github.com/Frix-x/klippain-shaketune/blob/main/docs/macros/axes_shaper_calibrations.md

[quasi condor]

Is this what you were looking for?

[sterile sable]

He wants x and y input shaper graphs

[wraith snow]

The link i posted has the macro name in it

As well as what the generated picture should look like

[quasi condor]

i got it i belive, running it now

x

y

ill print the cube, it will take over 2 hours so it will be later before I post pics

[wraith snow]

Just as a hint, u can download the pictures and upload them here as a file 🙂

No need to take a screenshot

[quasi condor]

for some reason i cant get my phone to hook up to my computer to send pics and the account on my phone is different then this one

[quasi condor]

heres 1 im finding the others

Are these clear enough?

[sterile sable]

I am not seeing any resonance are you?

[quasi condor]

im not, the cube looks good

i measured it and all sides were 30.16mm

The only thing I couldnt check was th bearing fit, because i dont have any

The bridging isnt perfect on one side so that will need some adjustment

is damping ratio supposed to be in my config file?

[sterile sable]

Yes damping ratio is suppose to be in it.

If you need help with the rest of print settings #slicers_and_print_help can help you

[quasi condor]

i think im missing somethings in my config file

[wraith snow]

Do u think or did u verify?

Thinking is based on luck 😉

[quasi condor]

i verified

Im still trying to figure out where max smoothing goes, espically since there 2 different numbers, 1 for x and 1 for y

[wraith snow]

Ok so u will need to add the damp ratio

[quasi condor]

I added that under input shaper

[wraith snow]

Is klipper happy without the zero in front?

[quasi condor]

yep

Do you know where I need to add the max smoothing in at?

[wraith snow]

Smoothing of what?

[quasi condor]

I dont know what its smoothing but it gives a number for smoothing and i saw it in someone config file

[wraith snow]

Ignore it

U have everything needed

[wraith snow]

how are things going? do u need further help or can we mark this as solved?