But on that website it's also written that the pam8403 would need a capacitor with 1000-2200 uf. could that be right?
listen here: https://www.dropbox.com/s/prym2896btk0f1r/180622_0031.wav?dl=0
which resistors would you recommend then? 1k?
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 (http://www.electronics-lab.com/project/mp3-player-using-arduino-dfplayer-mini/): everything worked circuit 2 (see attachment or http://www.belajarduino.com/2016/10/arduinop.html): humming noise appears on the speakers connected to the amplifier listen here: https://www.dropbox.com/s/prym2896btk0f1r/180622_0031.wav?dl=0(instead of RX & TX of the Arduino I used pin 10 & 11, because I could not upload the code with RX and TX connected - any solution for that? that's why I also didn't use )what I tried: 1) connecting the amplifier or DFPlayer module to another power supply as recommended in many forums - no change2) being careful about separating the wires of the amplifier from the wires of the DFPlayer - no change3) using coaxial cable to connect the amplifier or the player to the power pins - the player didn't even work4) putting the diode 1N4004 between VCC and 5V and 1N4148 between RX and 115) the setup as described here: http://markus-wobisch.blogspot.com/2016/09/arduino-sounds-dfplayer.html - no change, still humming6) I tried it with different arduinos, amplifiers, DFPlayer modules, cables - no changeDo you have any other idea? that would be amazing !! I really need this because I plan an sound art installation and I'm already behind schedule.