Closed keever50 closed 2 months ago
Hi, this is not a general printer support forum. Many problems can be easily solved by reading the firmware Wiki please check the calibration guide.
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Hi, I think that your request is more related to the Marlin core, maybe you can ask in the Marlin forums if that is possible to be implemented.
you can try using an EMI filter like this one here
Thanks for the suggestions. I thought this repo was a Marlin modification to enable some of its features. It appears i have to make a custom build to enable this feature. However, I haven't figured out which exact one just yet.
you can try using an EMI filter like this one here
Thank you. My power supply has one built in already. However, the EMI is on the printer itself, not the grid ^^ The "EMI" i am mainly talking about are voltage dips because the low frequency switching. Not something easily solved by adding a capacitor or filter.
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Did you test with a precompiled firmware?
Yes, and the problem still exists.
Bug Description
This is not a bug, but rather an annoyance or an issue.
My Ender 3 v2 printer has a custom power supply to make it more silent and the bed heater is the biggest power consumer. Now the heater PWM frequency is quite low, i assume 2 or 4hz. This is audible, because my power supply keeps adjusting for the voltage drop and makes a "vibrating" noise, which is ofcourse that 2-4 hz PWM frequency.
Is it possible to add a feature to adjust this? Or is there a way to adjust this myself by recompiling even?
.
Bug Timeline
No response
Expected behavior
As example, in klipper it is possible to increase the PWM frequency to something higher like 100hz or multiple kHz, which fixes this issue. No noise or interference is present.
Actual behavior
A very audible switching noise around 2-4hz on power supply when bed heater is on, which causes annoying noise and interference.
Steps to Reproduce
Version of Professional Firmware
Ender3v2-422-MM-MPC
Printer model
Ender 3 v2
Electronics
4.2.2 board
LCD/Controller
Stock
Other add-ons
Custom external power supply (Passive, no fan)
Bed Leveling
MBL Manual Bed Leveling
Your Slicer
Cura
Host Software
OctoPrint
Additional information & file uploads
No response