TMRPCM

Projects Programming
1

HI,
I am struggling with a buzzing sound when playing a wav-file from SD card. The buzzing only starts when the play command is executed and continues after the file is finished. Buzzing will not stop until I reset the arduino. I have tried to uncomment "disable speaker 2" in PCMconfig.h but no change. Any suggestions? The speaker is rechargeable battery powered active (called Hamburger - ebay stuff)

Untitled_03.zip (1.71 MB)

2

Just found out that the 9 pin starts on 0VDC but ends with 5VDC after sound file is played. So there was the problem. Suppose adding a capacitor will solve this.

3

Nope, still buzzing even after 5VDC eliminated.