Recommended · for some experience
How to remove buzzing/noise from a cheap Bluetooth Music Receiver? (Experiment)
Why people recommend it
GreatScott tracks down buzzing from a cheap Bluetooth audio receiver and tries fixes; recommended for ground loop noise and the isolated DC-DC converter cure.
Watch for: get the isolated converter's pinout right
In their words
I also saw this video and in the end he said it should be connected in series (the same as I did).
nasty12312345 on electronics.stackexchange.com, Sept 2022. CC BY-SA.
Not my idea at all but i believe you need a 5v-5v converter suited to isolating and/or converting DC power rails as per this video:
bigjeff3889 on electronics.stackexchange.com, Apr 2021. CC BY-SA.
I found this YouTube video helpful [video] but can you please explain to me how can I implement it in my circuit.
Vishal on electronics.stackexchange.com, Jun 2020. CC BY-SA.