Solved Noisy Motors + Duet 2 Maestro AM8 (2040) enclosure!
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For the extruder in spreadcycle. Try a different Off Time
https://duet3d.dozuki.com/Wiki/Gcode#Section_M569_Set_motor_driver_direction_enable_polarity_and_step_pulse_timing
Its the Fnn parameter. Try the numberes from 1 to 15 to find one where you can not hear the high pitch noise.i limit my travel speed to 75 to stay in stealthchop2 mode. However the extreme noise might not be related to speed but acceleration. Next time you experience these noises lower the max acceleration. This can be done during the print by using M201 in the console.
For microstepping Alex Kenis found that lower microstepping have more torque. See
https://www.youtube.com/watch?v=GVs2d-TOims&t=1490s -
@megaandy said in Noisy Motors + Duet 2 Maestro AM8 (2040) enclosure!:
I am hearing the motors clicking and thumping in general
That's probably happening at the changeover between stealthChop and spreadCycle modes. Use M569 P# (where # is the driver number) to see the movement speed at which this happens.
If it was only the Z motors that were too noisy then you might want to remove the M569 P0 and M569 P1 commands that you added, leaving just the Z motor running in stealthChop modes at normal speeds.
Another possible reason why the Z motors were noisy could be that your printer uses very low current high inductance motors for Z. If it does, then they should be connected in parallel to a single motor connector on the Duet instead of to the Za and Zb connectors, which are wired in series.
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Can you measure the resistance of your motors?
I came from an A8 as well and have replaced the 0.9A Motors because they were terrible.
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Thanks for the replies, over the next few days I will try all of the tips, see what helps and report back.
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I have not had time tonight to try anything else but I tried measuring the resistance on the pins of a stepper motor. Wasn't really sure what i was doing but I unplugged a motor and measured the pins directly, the only pins that seemed to get a reading was 4.6ohm.
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so you have the 0.9A ones as well
the 1.68A has 1.65Ohm
https://3dprint.wiki/reprap/anet/a8/steppermotor -
@veti aha so I'll be running them too high current too then. I'll lower to what I saw others use with 0.9 motors.
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Thought I would just update my progress with this,
I have reverted to default stealthchop settings on X, Y and E. E motor whines in spreadcycle no matter what value I give T-Off(1 to 15) the only thing that changed was the pitch of the whining, so i put this back to stealthchop with default speed change to spreadcycle. (worth noting that the X and Y motors also whine if they are set to spreadcycle)
Reverting to default stealthchop on X and Y I think is as good as it will get noise wise as like i said the Z motors bothered me the most. No clicking and thumping noises with this setting. However I am getting layer shift problems, I have found it happens on X+Y an hour into a print that I tried twice so i will try replicate this on a smaller print so I can change settings and check results quicker.
Also for the E motor, I need to test this further but i am finding that when printing infill on a few objects i have tried, the extruder gear is not moving and producing very weak infill. The infill is set to the same speed as the inner walls so it should have no issues printing this speed, it seems to be more of an issue with the stopping and starting extruding (there are no retracts during the infill). I tried raising the E acceleration and instant speed change to the marlin defaults to but this didn't help. Also tried increasing temperature but this didn't help either.
Also i have now set motors to more acceptable current for the 0.9A motors, M906 X700.00 Y700.00 Z700.00 E700.00 I40
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For me the next thing i am gonna change in my printer is move to 24V.
This is also supposed to shift motor noise, but what i am after is the higher torque at higher rpm. -
Another
quickupdate. I realise at this stage these are just updates of someone who hasn't got a clue what they are doing changing anything they can think of, getting nowhere and getting very frustrated. The only problems I am having with this board seem to be motor related and I am now assuming the only fix is to just buy higher current motors despite the fact they worked fine on my last board.I am trying to get the E motor working reliably. Basically on spreadcycle motors will make a horrible high pitch noise that i cannot get rid of with current or TOFF changes, I presume now there is no way of getting these motors in spreadcycle without that horrible whine. I have been trying the default stealthchop instead and have realised that when performing estep calibrations it will basically extrude a different length each time.
I also tried a very high V value for the E motor in stealthchop so its pretty much only in stealthchop when idle. still get different extrusion everytime when extruding 100mm at 1mm/s.
As for X+Y, they are back to default stealthchop, I have not seen any layer shifts in the last few test prints but i have mostly been estep calibrating and cancelling prints due to inconsistent extrusion.
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From the silentstepstick FAQ: https://learn.watterott.com/silentstepstick/faq/
A motor supply voltage of 12V is in most cases to low and in general the sound gets quieter if the motor supply voltage is above 18V. -
@veti said in Noisy Motors + Duet 2 Maestro AM8 (2040) enclosure!:
From the silentstepstick FAQ: https://learn.watterott.com/silentstepstick/faq/
A motor supply voltage of 12V is in most cases to low and in general the sound gets quieter if the motor supply voltage is above 18V.That is especially the case when using low current (hence high inductance) motors.
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Thanks for all the help, I have basically decided to go default (Stealthchop but change to spreadcycle at a pretty low speed) for X,Y and E and the stealthchop with V400 for Z(Z has slow max speed anyway). The last few days I stopped being concerned about the noise and more for layer shifting and extruder motor issues, hence me trying spreadcycle only on my last post.
I've been having problems getting the Estep calibrated as i seem to get different results most times I try but I will keep at it.
I just finished a 6 hr print! ! 0_1543082214775_Plant Pot.jpg , no layer shifts so fingers crossed the X and Y motors should be set correctly and although I have some extrusion issues on seams and infill I think this should be solved with better Estep value.I will post the settings I am currently using in case anyone stumbles across this:
0_1543081898335_config.g
