Voron 2.4 VFA on X

[opal yoke]

Try to get rid of the VFA on X.
I've already rebuilt the gantry. Umbilical attached with cable ties. Checked all screws on the toolhead for tightness.
Galvanic mod is already installed
ADXL is used by the sbb36

Voron 2.4 350mm
A/B Motor os 48V
A4T Toolhead with Crossbow Filament Cutter
A4T Toolhead with 2 Filament Sensor
Ebb36 Toolheadboad
USB Cartographer
Beefy Front Idlers
Double Shear

I am open to suggestions for improvement.

Voron Cube

Belt Tension

Speed Settings

[night cedar]

Can you drop the run current to 1amp and rerun vibrations please

Also you pa is to high

I think you have vfa on both x and y

[opal yoke]

Vibration with 1.0A

Printing now PA Tower

[night cedar]

After that can you remeasure belts please

Then we may need to drop pwm in autotune to 23e3

@valid orchid & @white onyx we are loosing b motor. Still not fully sure why this is happening

[opal yoke]

right after the PA Tower

PA Tower right after the PA Tower

Changed PA from 0.064 to 0.074

[valid orchid]

Is this Kalico?

[opal yoke]

No, I use regular Klipper

[valid orchid]

Ok, that eliminates that variable

[night cedar]

Can you drop the pwm in the motors in autotune to 23e3

Restart and then rerun vibrations

Please

[opal yoke]

is this correct?

[night cedar]

Yes

[night cedar]

Let’s do 1.25 amps

The vfa can be caused by either belt tension, motor speed, slicer settings, or components choices

Are you using gates belts?

Do you have auto cooling turned off?

Do you have slow down for layer time turned off?

[opal yoke]

Running now with 1.25 ams

[opal yoke]

According to Fysetc's BOM, it is GATES GT2 Belt.

[opal yoke]

All I can say is that before I switched to 48V, I didn't have VFA.

[opal yoke]

Where can I find these settings? Using Orca

[night cedar]

The settings are generally in the filament section

[night cedar]

It could be the motors don’t like 48 v, the combination of driver, voltage, motor

[opal yoke]

That would be bad. I specifically looked up which motors to use for 48V.

with 1.25 A

[opal yoke]

Belts tuned to 1.9 looks the same

[night cedar]

I would go back to 24v

Can you also remove the pwm from autotune

[opal yoke]

This is now with 24V and without the PWM

[night cedar]

Was this like it was before the 48v upgrade

[opal yoke]

That was the case with 24V, Fysetc motors and Fysetc motherboard

The Fysetc motherboard is broken, so I installed the BTT Octopus Pro.

@night cedar We are missing the motor frequency from motor B. Should I plug it into another port on the mainboard, or will that not help?

[night cedar]

Can you can you swap back to tmc2209

[opal yoke]

Reluctantly, because I want to do 48V AWD in the long term.

But if it's for testing purposes, I can quickly make some changes.

[opal yoke]

I swapped the cables from motors A and B. It's better now, but not perfect.

[night cedar]

I am trying to figure out if it is the motors or drivers or voltage that is causing issues

I am leaning toward motors

[opal yoke]

But only the B motor, right?

@night cedar The best result so far. I'm now at 1.0 A.

How do we proceed? Shall we leave it and see if there are still VFA left?

[opal yoke]

This in with 48V and 1.25A

[rich schooner]

be very careful with current.
motors get way hotter with 48V. u have plastic mounts, they will melt before motors will 😉

also update Shaketune to the latest version. u are still on V5

[opal yoke]

Up to 80-90 degrees is okay, right? I monitored the motor temperature.

[rich schooner]

for ABS/ASA parts thats already the dead limit

[opal yoke]

Can i update it with the update manager?

[rich schooner]

yes

[opal yoke]

Ok i can set max_temp to 85C

[rich schooner]

why did u install 48V? whats the goal

[opal yoke]

Wanted more acceleration

Klippain is now on v5.2.1

[rich schooner]

so u already reached the limit with 24V?

[rich schooner]

careful here

klippian is NOT shaketune

[rich schooner]

shaketune is a module of klippain which can be installed alone
BUT klippain is a whole another project

[opal yoke]

klippain-shaketune is on v5.2.1

[opal yoke]

With 24V, the input shaper only displayed 4k accel.

[rich schooner]

48V will not change that really

now u have 5k 😄

[opal yoke]

Unfortunately, I have already had the opportunity to find that out.

[rich schooner]

great.

so what is our goal here?
u mentioned AWD. If u upgrade anyways, how much work should we spend here?

[opal yoke]

I'm currently waiting for the Monolith AWD kit from LDO. I don't know when the release is. Until then, I'd like to be able to print without VFA.

And since I don't have to modify it that much, I figured I'd install already 2 of the 4 motors and the power supply.

[rich schooner]

ok so i would do also what reth said and go back to 24V.
did u change TMC Autotune to 24/48V as well while swapping between voltage?

[opal yoke]

Changed the Autotune for 24V/48V after every swap

[rich schooner]

great. Upload a klippy.log as a file here please

but before doing so, rollover so the log isnt >1MB in size

i just want to see the config, nothing else

[rich schooner]

thanks

[opal yoke]

its now on 48V. and making right now vibration profile

[rich schooner]

config looks good.
did u get VFAs after installing the motors or with the old ones?

[opal yoke]

I replaced the motherboard, TMC, and motors. Since then, I have had VFA.

Regardless of whether I have 24V or 48V. The B motor is missing frequency. Won't that be a problem if I switch to AWD?

[rich schooner]

no clue

but im also not sure if we can help u here

we cant just make VFAs go away

[opal yoke]

Will it help if I replace the motor and TMC? I have a replacement motor, but I would have to order the TMC.

[rich schooner]

maybe

[opal yoke]

I have ordered a few tmc2209s. I will then go back to 24V and install the tmc2209s. Let's see if that changes anything.

[rich schooner]

cancel your order and get 2240

u can install them later on Z

best u can do

[opal yoke]

Okay. Then I'll order four of those.

[rich schooner]

Its been 8 days. Where are we at here? Whats the current state?

Further help from us needed?

[opal yoke]

I'm waiting for the tmc2240 and tmc5160. They should arrive today. If this doesn't solve the problem, I'll have to keep looking.

What else could be the problem? Belt, idlers?

[rich schooner]

lets not make assumptions unless u tested the new drivers 🙂

[opal yoke]

I'll let you know when I've received them and installed them.

[rich schooner]

sounds good.

not sure if i mentioned it before - 2240 & 5160 run on SPI, not UART. so u have to change jumpers before installing them 🙂 review your mainboard manual to know how to terminate them.

[opal yoke]

Tmc are here 🙂 I already had tmc5160, so it should be an easy switch.

I will now test the new tmc5160 at 48V, then at 24V, and then the tmc2240 at 24V.

[opal yoke]

TMC5160 48V:

TMC5160 24V:

TMC2240 24V:

TMC2240 looks best to me. What I noticed is that shaper calibration was measured with SGV 15, which means that the max accel is very low compared to SGV 5.

TMC2240 with 5 SCV:

[night cedar]

@opal yoke you are running SCV to high. It needs to be at 5. The higher you set scv the lower the recommended accel will be, and the higher the smoothing will be

[opal yoke]

Is there a way to permanently adjust the SCV in Shaketune?

[night cedar]

Drop down arrow. You can manually set it

The drop down arrow is next to macro

The permanent way is to set it in Printer.cfg

[opal yoke]

like this?

[night cedar]

Looking at your past results. All three of your test appear to produce the same shape,~~ although the 5160 at 48v looks better as there are no tailings in the higher freq~~. Also your vibrations graph from the 5160 at 48v has lower PSD in the top center graph

[opal yoke]

Jerk and SCV are the same, right? Should I set all jerks to 5 in the slicer?

[night cedar]

yes, jerk in slicers is scv

[opal yoke]

Should I switch to TMC5160 48V and perform all tests again?

[night cedar]

as an intial starting point scv should be set to 5

[night cedar]

https://youtu.be/aSm-xMLZnak?si=czDzq-4VlRZFpjo3

[opal yoke]

this now with tmc5160 48V 5SCV:

[night cedar]

you might find that in actually printing the 256 microsteps will be to much

if you get timer to close errors the first thing I would do is reduce the microsteps

[opal yoke]

I've never had any problems with it so far.

I'm going to print a Voron cube now.

[opal yoke]

vfa are still there but it has gotten better

[night cedar]

you need to fix your pa. Bad PA can exaserbate the vfa

[opal yoke]

Good to know, do a PA test and print the cube again.

[opal yoke]

After many test prints, I get the best result that I can achieve.

[rich schooner]

Looks pretty good

Unfortunately we cant help u remove VFAs fully. Thats not how motors and drivers work

I doubt we can do more than what u currently achieved

[opal yoke]

Is it just the motors or also the pulleys, belts, etc.?

But I'll leave it at that for now.

[rich schooner]

Hard to tell. Usually motor

[rich schooner]

Awesome, i will mark this post as SOLVED. Enjoy your printer