Ender 3 V2 Upgraded Mainboard Cover for Silent Fans

Important!! before you print this cover you should have Riser Feet 35mm or 40mm installed on your Ender 3 V2 

Link for Riser Feet: https://www.printables.com/model/129052-ender-3-v2-riser-feet-40mm/files

This cover has mounting holes for a Noctua 40mm fan and a DFR0379 LM2596 DC/DC Buck Convertor with display. It will protrude 27mm out of the bottom of the printer, hence the riser feet needed before doing this upgrade. 

I rewire the mainboard cooling fan and the extruder cooling fan to the output of the converter. Then wire the 24V source from the extruder fan to the input of the converter. This way I only need one buck converter to supply 12V to the Noctua fans(I also upgraded my extruder fan to a Noctua fan the original fan were too loud!). Note: when wired this way both fans will always be on when the printer is on.

Feel free to modify the model if you want to use a different converter or cooling fan. The STEP file is provided. The following are the parts that I used:

• Noctua fan(NF-A4x20 FLX): https://noctua.at/en/nf-a4x20-flx
• Buck Converter (DFR0379 LM2596 DC/DC Buck Convertor with display): https://www.digikey.ca/en/products/detail/dfrobot/DFR0379/7087190