Hello!
I have successfully built my own audio guestbook based on the https://github.com/playfultechnology/audio-guestbook repo.
I want to make a second one but I encountered a strange thing (Teensy 4.1 + Audio Shield rev D2)
I noticed that if I have the teensy on for a few hours, random noises are added to the recording. I attach one of these.
View attachment 00004.wav.zip
In the previous build I used rev D audio shield, no such error occurred there.
I will also show a picture of the soldering. I'm really annoyed by this. Even when the microphone is not connected, this noise is still present. Could I have damaged the audio shield? Is it significant that I connected the speaker to the line out and not the 3.5mm output?



Thank you very much for your help!
I have successfully built my own audio guestbook based on the https://github.com/playfultechnology/audio-guestbook repo.
I want to make a second one but I encountered a strange thing (Teensy 4.1 + Audio Shield rev D2)
I noticed that if I have the teensy on for a few hours, random noises are added to the recording. I attach one of these.
View attachment 00004.wav.zip
In the previous build I used rev D audio shield, no such error occurred there.
I will also show a picture of the soldering. I'm really annoyed by this. Even when the microphone is not connected, this noise is still present. Could I have damaged the audio shield? Is it significant that I connected the speaker to the line out and not the 3.5mm output?



Thank you very much for your help!