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

Grumpy_Mike June 20, 2018, 8:48am 2

Capacitor across the supply pins of the amplifier, about 470uF.

Topic		Replies	Views
DfPlayer Mini Noise 9V Audio	5	2656	May 6, 2021
DFPlayer inconsistent , noise- Breadboard issue? Project Guidance	3	530	May 5, 2021
Resistors on the serial lines. DFplayer General Electronics	12	653	November 14, 2023
DFPlayer Noise on stereo DAC outputs Audio	3	2179	May 6, 2021
DFPlayer reset if speaker is connected ! help Programming Questions	4	1004	May 5, 2021