duet 3 6hc - tmc5160

deckingman

@Danal Fair enough. However, the wiki does also state that the default is for stealth chop to be enabled so I'd be a bit surprised if DC reversed that for the gen 3 drivers but who knows?.....

Given the Duet3 is targeted at heavier machines it would surprise me if stealthchop was default, but I suppose one could browse the code to find out.

I only recall the stand still noise not being that much quieter than the Gecko that came off the machine, but I'm definitively not willing to give up torque to have it quieter like I would on a smaller printer.

deckingman

This is purely anecdotal but my 6 extruder motors are completely silent to my ears with my gen 3 boards, whereas with my gen 2 duet ethernet, they were audible. It threw me completely the first time I loaded filament because I thought they weren't working until I looked. I can't say one way or the other about the main axis motors though because I changed some of them from Nema17s to Nema 23s at the same time that I changed the boards.

dc42

The default on Duet 3 is spread cycle mode. You can use the D parameter of the M569 command to change to stealthChop.

deckingman

Just an addendum to this thread. I tried changing my Duet 3 configuration to include the D (D3) parameter in M569 on my XYUVA and B axes and can say that I can't detect any difference, audible or otherwise. That's with a mixture of Nema 17s and Nema23s. However, for reasons of scientific accuracy, I must add that my ears are 66 years old and although I can hear 12kHz, that is my cut off frequency - I am oblivious to anything 15kHz or higher

danym21

@deckingman
Hello,
do you have found a solution why stealth chop is not working on the Duet 3?
I still trying to enable it but it looks like the board use it only under 119 mm/min (1,9mm/sec)
all above is noisy like spreadCycle.
same printer and motors with different boards and tmc5160 are much more quiet as with the duet 3 6hc.

deckingman

@danym21 I didn't say that stealth chop wasn't working - just that I can't tell any difference, audibly or otherwise on my machine for any of the XY axes with or without the "D" parameter. I can't really compare Duet 2 with Duet 3 because I changed some of motors from Nema 17s to Nema23s at the same time as I changed the boards. The Nema 23s are inherently more noisy than the Nema 17s. I can say that my extruders are silent (to my ears) using Duet 3, whereas they were audible with Duet 2.

dc42

@danym21 said in duet 3 6hc - tmc5160:

I still trying to enable it but it looks like the board use it only under 119 mm/min (1,9mm/sec)
all above is noisy like spreadCycle.

I started an investigation into this, but I haven't completed it. In the process, i discovered that there are at least four conditions that must be met or stealthchop to be used. I listed them in another thread about the same subject.

danym21

This post is deleted!

danym21

@dc42

ok then let us discuss it on my original thread for the problem.

https://forum.duet3d.com/topic/16297/help-needed-with-duet-3-6hc-tmc5160-stealthchop-config/14

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