Hi everyone, I hope you can help me with the problem of a humming noise when I connect an Arduino Uno + DFPlayer mini + the amplifier Pam8403. I tried already many things that I found in this and other forums. I would really appreciate your help!! my assembly: circuit 1 + code ( MP3 player using…

humming noise – DFPlayer + Amplifier Pam8403

Solaya June 21, 2018, 7:59pm 5

dammit. no, it doesn't help. still humming. any other idea? I am quite desperate already

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