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Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.

1 vote

Horrible buzzing on custom car bluetooth

Your photo shows that your circuit is on breadboard and not yet installed in the vehicle. This leads me to believe the cause of buzz may be in your AC/DC power supply. You need a clean 12V DC source. …
Andrey The Great's user avatar
-1 votes

Horrible buzzing on custom car bluetooth

You are reinventing the wheel. I have added Bluetooth to my vintage Pioneer stereo and my car. Connect to any AUX input or Tape input. Sound quality is like CD. This is a link to the exact product I …
Andrey The Great's user avatar