Help: Reduce motor noise (For A Complete Rookie)

Veti

for 24v you need to swap/resolder the heatbed, switch heating element, switch fans.

R3play

Side question..
I have some extra 1.8° step angle motors laying around (same one as the extruder)

Can I use these aswell on the X and Y or is it more recommended to use 0.9° step angle on them?

Veti

it depends on the kinematics of your printer.
on normal cartesian printers you are talking about a resultion difference of 12.5micron to 6.25micron.
deltas are another thing though.

Phaedrux

@r3play said in Help: Reduce motor noise (For A Complete Rookie):

Side question..
I have some extra 1.8° step angle motors laying around (same one as the extruder)

Can I use these aswell on the X and Y or is it more recommended to use 0.9° step angle on them?

https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors

https://duet3d.dozuki.com/Wiki/Choosing_the_power_supply

R3play

Again just to be safe.
If I use the following items:

220x220x3mm Heatbed 24V
24V/40W Heater Cartridge
24V Radial Fan
24V 30mm Axial Fan
24V 50mm Axial Fan

Would a 24V 15A max. PSU be enough?

Phaedrux

Total power needed:

Bed heating power: this is effectively zero if you will be using an AC mains voltage heater. Otherwise, use the rated power of your chosen bed heater. If you might want to turn the voltage up so as to increase heating power, allow for this (power rises as the square of the voltage).

Extruder heater power: Use the power rating of your heater cartridges. If you will have dual extrusion, allow for heating both up together. If you will be turning up the power supply voltage to improve bed heating power, remember that this increases extruder heater power too.

Stepper motors: at full rated current, the power needed for each motor is its rated current times its rated voltage (if no rated voltage is specified, use the square of the rated current times the phase resistance). This is the power at standstill. To allow for driver losses and the extra power needed to create acceleration, add 50%. Multiply by the number of stepper motors.

Fans: 3W per fan is a generous allowance for small axial fans. For blower fans, work out the power requirement from the datasheet. Note the fan outputs are rated to 1.5A maximum.

PanelDue: with a 7" screen attached it draws about 3.5W.

Duet: allow 2W.

Add the power requirement of any lighting and any servos etc. that you intend to use.

preb1

Following on from R3play's request, I too would like to try and reduce the motor hiss at idle.

I have 2 Duet3d boards running a delta and a cartesian printer and I think they are great. I especially love the ease at which you can change the firmware (using 2.02 rrf) and I definately think Reprap is far better than Marlin.

However, I am still very green when it comes to programming etc.

Both printers suffer from motor hiss at idle which on the delta is not to bad but the cartesian is quite loud. I have messed about with the TOFF settings which has made a little difference. Even tried different steppers but just the same.
I have not tried upping the voltage to 24 volts yet. Still using a 12 volt PSU set at 15 volts.
I would like to try adjusting some of the other settings available but haven't a clue what the codes are. I have been reading the other posts and see that you can adjust other setting using M569 as you do for the TOFF parameter but what are the parameters. Also downloaded Chopconf-generator but haven't a clue how to run it. Looked at it in notepad++ but thats all.

Anybody help me please?

wilriker

@preb1 Sorry for getting back to you so late only.

I wrote the chopconf-generator, so questions about this might be best answered by me. Did you download the binary release from the releases page or did you download chopconf.go? In case of the latter this is not really meant for using but only if you want to modify something. So in this case go to the download page and get the version for your OS (mentioning Notepad++ I assume windows so chopconf_win_amd64.exe is what you are looking for).

Next this is a command line tool. It has not graphical user interface but you run it from cmd.exe.

You can then use it like described in the readme on Github.

$> chopconf_win_amd64.exe -toff 1

to generate a CHOPCONF value with TOFF set to 1 and everything else left at firmware defaults (just an example, I read that you tried TOFF already). The value it generates then needs to entered as M569 ... Cnnn. Which parameter influences what is probably best found in the tuning guide linked in the readme page.

preb1

Thanks for the reply.

Yes I did download chopconf_win_amd64.exe but I cannot get it to run in the cmd window. I think I need a little help here please

wilriker

@preb1 OK, taking one step back. Which value is it that you want to modify? The following values can already be adjusted via M569 (with RRF 2.02):

TOFF: parameter Fnnn
TBL: parameter Bnn
HSTRT, HEND, HDEC: paramter Yhstrt:hend or Yhstrt:hend:hdec

so unless you want to modify CHM or RNDTF (both unlikely IMHO) you don't need to use chopconf-generator at all.

I also updated the stand-still noise guide in this regard.

If you still want to use chopconf-generator here is what I just tried in my Win10 virtual machine (I am a Linux user for a long time now so I had to actually try it):

Downloaded the .exe (you already did that part)
Opened start menu, typed cmd and opened Command Prompt this way
Switched to the directory the downloaded file was (in my case I started in the user's home dir and just had to do cd Downloads
Run chopconf_win_amd64.exe (by entering this filename) with arbitrary parameters
Output is the value that needs to be put into the Cnnn parameter

preb1

@wilriker
Thanks very much. I get it now. My mistake was not changing directories.
I was interested in tinkering with the HSTRT and HEND values as I have messed about with Toff values but it did not make much difference to the noise. As I can adjust those values via M569 input (now I know the parameters) I can try that.
Thanks again for your help. Much appreciated.
Paul

Wyvern

I just swapped out a noisy X motor after all the fixes didn't work, still quiet compared to a MKS board but louder than even my dual Y axis.

It's now a 3mH vs the 5 that was in there.

Steppers make a huge difference!