Duet 2 vs Duet 3 - Noise Levels
-
Choosing a board.
I am wondering to what degree the Duet 3 will reduce noise over a Duet 2 at low speeds. Any quantification?
TIA
-
Well the Duet3 supports stealthchop at low speeds, so that should help theoretically, but it will largely depend on the motors and application in practice.
-
Thank you for the quick reply.
It is for a 240 x 240 x 320 corexy.
What NEMA 17 motors would be the quietest with the Duet 3?
-
@Doppler9000 the moons motors with the duet3 are extremely quiet. That’s what I have on my blv cube.
-
@Nuramori
Thank you!The build is based on the BLV, using the new CNC aluminum parts.
-
Which Moon’s are you running?
-
Given the same motors, speeds and loads, the Duet 3 is capable of being quieter.
Probably less difference between the Maestro and Duet 3 as both support stealthchop, but weather or not you want to use stealthchop depends on your speed and/or torque requirements afaik.
Unless you need the high current ability or expandability of the Duet 3, the Maestro might be an option.
Edit: Maestro will not support stallguard / sensorless homing however, but as far as i'm concerned its of less use
-
@bearer said in Duet 2 vs Duet 3 - Noise Levels:
Given the same motors, speeds and loads, the Duet 3 is capable of being quieter.
Probably less difference between the Maestro and Duet 3 as both support stealthchop, but weather or not you want to use stealthchop depends on your speed and/or torque requirements afaik.
Unless you need the high current ability or expandability of the Duet 3, the Maestro might be an option.
Edit: Maestro will not support stallguard / sensorless homing however, but as far as i'm concerned its of less use
If the Maestro would work, current-wise, it would be ideal, as I don’t need the additional capabilities of the Duet 3.
I plan to put he board in an enclosure with 2 8” Noctua fans, so I could run it relatively hard.
How does one determine the current requirement threshold?
-
@Doppler9000 said in Duet 2 vs Duet 3 - Noise Levels:
How does one determine the current requirement threshold?
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors
The typical recommendation is to set the current to 70-85% of the rated max of the motor.
-
And don't forget, the drivers on the Duet3 support interpolated stepping at all microstepping settings so you could have microstepping set to 32 for (possibly) better precision and interpolation turned on for quieter operation.
-
@gtj0 said in Duet 2 vs Duet 3 - Noise Levels:
And don't forget, the drivers on the Duet3 support interpolated stepping at all microstepping settings so you could have microstepping set to 32 for (possibly) better precision and interpolation turned on for quieter operation.
This is also true of the Maestro
-
Heh, I forgot the Maestro.
-
@Phaedrux said in Duet 2 vs Duet 3 - Noise Levels:
@Doppler9000 said in Duet 2 vs Duet 3 - Noise Levels:
How does one determine the current requirement threshold?
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors
The typical recommendation is to set the current to 70-85% of the rated max of the motor.
Sorry, I wasn’t clear.
I meant the threshold for motor current.
I can calculate the speeds, etc., using an estimate of the masses, but if designing for quiet operation, does that mean that lower current/torque motors will work? I am assuming there are competing criteria that are negatively correlated, so it is more complicated...
-
@Doppler9000 I'm really not sure. If noise is the biggest consideration you have then I would think that right sizing the motors such that you have only enough torque as you need it would make most sense to choose the lowest current 0.9 degree steppers you can.
These calculators may help you evaluate steppers.
https://www.reprapfirmware.org/ (select the EMF calculator)
https://wilriker.github.io/maximum-acceleration-calculator/
