ANET A8 steppers

Wyvern

There is tuning you can do to iron out sound, but see if you are on 16X interpolation.

A lower impedance motor, at least in my case, is quieter than a higher one.

Running lower amps will also quiet the steppers, but you need to make sure it is operating well at whatever current setting you set.

cglass17

I have this for the microstepping
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation

I have tried
M906 X300 Y300 Z300 E300 I30
varying 300-1000.

They all seem to be the same.

On another note, I see everyone suggesting 16X interpolation. I am confused why this is the suggested setting vs 256.

Wyvern

@cglass17

You shouldn't really notice any change at 256 and it can seriously bog down the printer speed.

I did a test at 16X 16X with Interpolation and 32X

16X with interpolation yielded the best result.

It is beyond my scope but there should be a way to tune the drivers for reduced noise.

But your currents seem pretty low, what is your max amps on the steppers? you should probably run between 50-75%

cglass17

Based on reading 42SHDC3025-24B on the back of the stepper, I think these are the specs
https://nl.aliexpress.com/item/LMYSTAR-42-Stepper-Motor-17-Nema-42BYGH-1-8-0-9A-3-96V-with-90cm-Motor/32823911368.html

Wyvern

@cglass17
It's a higher impedance stepper, so it will loose torque quicker at high speeds.

.9A So I would at least run at .45A.

you could install stepper dampers if they fit, they will take a lot of the robotic noises out.

you could always go with better steppers, it's a smaller machine so you could also install some E3D .9 standard steppers- unless you are at 12V which I would still say run 1.8 degree steppers.

This is a data sheet for setup and description of stepper driver configuration- https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2660_datasheet.pdf

I haven't dabbled in using this so, I'm sure someone else will chime in.

cglass17

Yeah, I am already looking at other steppers. But before I bought new ones, I wanted to make sure I couldn't get these working.

dc42

@cglass17 said in ANET A8 steppers:

Based on reading 42SHDC3025-24B on the back of the stepper, I think these are the specs
https://nl.aliexpress.com/item/LMYSTAR-42-Stepper-Motor-17-Nema-42BYGH-1-8-0-9A-3-96V-with-90cm-Motor/32823911368.html

Yes, that's a low current stepper motor. The controller will need 24V power for it to run quietly and fast. Does the A8 use 12V or 24V?

wilriker

@dc42 The A8 has a 12V PSU.

@cglass17 I was upgrading my A8 as well and never really had big issues with the noise levels of the stock steppers. I since switched to low inductance, high current steppers (Wantai 42BYGHW811) but this did not change the noise level. Though I am in the process of migrating to 24V and I am looking forward to seeing if this makes a change.

cglass17

@dc42 - Yep like @wilriker said 12V. I didn't realize that the steppers could run on either 12V or 24V until you stated it. Thanks for pointing that out. So it sounds like you are confident that if I change the voltage that the motors will be quiet. Sounds like I need to look upgrading all of the electronics based on that.

wilriker

@cglass17 The electronics can mostly handle it. What you definitely need to swap is anything that is voltage-specific, i.e. heaters (bed and hotend) and fans. For the latter you could go with buck-down converters but I would not try this with heaters (even though there are high-current buck-downs but they cost about the same as a new heater so why going the workaround-route?!).