I thought so, but the stress for the components is still there.
I like that one
I thought so, but the stress for the components is still there.
I like that one
OK, so I switched the TMC2209 chips on X and Y axis and there is no change. Still the Y axis is more loud/vibrating.
For sure I also replaced capacitor on charge pump of TMC (in datasheet recommended 22nF, original A4988 drivers used 100nF) and for sure grounded input clock pin (on original drivers I found that this pin was grounded through about 10k resistor).
As a āshoot in the darkā I tried in config to just change config pins to swap X and Y and it still the same driver, so itās not probably SW problem, just HW.
I donāt have an oscilloscope now, but I will try to borrow it in the next days.
I also tested now Z axis and Extruder drivers.
Z axis is not vibrating, but it āwhistleā.
Extruder is slightly noisier then X, but smooth.
The Y axis is the worst. Itās pretty interesting, that there are such differences on all axis. Maybe some interference on the board?
Can you describe what you mean by loud/vibrating?
Is āloudā a whine? growl? squeal? bark? meow?
Is the vibration periodic? constant?
Would you describe it as a wobble? shimmy? shake? twist? choreographed dance?
Might help narrow down whatās going on.
Edit: For clarification I meant interpretive dance, Hopefully your steppers arenāt choreographed dancing or you have much bigger problems.
The load on your Y axis/stepper is much greater than your X axis. Bed heavy, toolhead light, stepper load is different so donāt expect each to be alike, sound/vibration. Try putting a beefier stepper on your Y with heavier run current. Or what I did on a bed slinger, dual drive, i.e. two Y steppers, blasting that bed around. Very quiet.
Itās 'Nureekāing and 'retutāing, and just when you expect them to ānureekā again, they
āsqurlookalā!
ā¦
I tried to record the sound of the motor. For some reason my microphone has pretty high noise (event thatās calibration USB mic), but itās still audible (and visible )
X is nice quite and smooth. Y is louder and vibrating (in real use itās even more audible because it resonate)
sounds.zip (1.2 MB)
The vibrations are simply vibrations When I hold the motor in hand, itās like phone.
I found out, that the different sound of Z and E was probably caused by different settings (rotation_distance). With the same settings they are like X axis.
I recorder the sound with same settings on all motors and using command FORCE_MOVE DISTANCE=200 VELOCITY=50 STEPPER=āxyzeā
If these are the actual noises, you can call yourself lucky to have such a silent printer.
This is mechanical motion and that does not work with out a bit of noise.
I had to import the clips into audacity and normalize the tracks to hear anything at all.
I didnāt normalized the sound, the records are quieter then real volume.
As I mentioned, the Y axis is in reality also much more loud, when the printer move, because it resonate (thanks to the bed and mount to the frame).
Still the main point is, why Y axis drive is twice as loud/vibrating then X/Z/Eā¦
I borrowed oscilloscope, but I will be out of home until next weak
OK, I tried to poke with the oscilloscope.
DIR and STEP signals looks good (and the same as on X driver).
Voltage input for driver is also clean.
Output of the driver is clean (without connected motor). With connected motor itās too distorted and also probably the capacitance of the probes affects the motors (it can be heard).
I tried also to measure across the sense resistors, but itās too distorted to see anything.
So I wasnāt able to find the cause of this problem
Even when I tried to watch current flow through motor using oscilloscope, I didnāt find much difference between X and Y.
I will now try to swap extruder and Y motor outputs (to have smoother and quieter Y) and in the future I will probably replace the whole boardā¦
Iām too lazy to re-read and Iāve forgotten by now, did you say the vibration get better when you connected the stepper to another driver? If not, your stepper bearing might be shot.
Happened to me the other day but in my case the motor was stalling and grinding because the bearings werenāt holding the rotor centered to the coils and it started grinding against the inside.
Yes, itās definitely something with the driver. Motor is fine on other drivers and problem persist on same driver also with another motor.
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