I2S Potentiometer and Headphone Issues
Posted: Fri Feb 25, 2022 10:00 am
Hi All
This is my first build and I have been making slow yet steady progress. This was up until I addressed the audio for my Gameboy Zero.
I am using the Adafruit MAX98357A combo DAC/AMP along with an external speaker, headphone jack and a 5 pin potentiometer. By sifting through a few tutorials and the Adafruit website I was able to get sound coming through the speaker without the potentiometer connected, however upon integrating the potentiometer it caused the sound to go very quiet and crackly, even at full volume. I experienced similar issues with the headphone jack. As I said, sound through the speaker was crisp and clear and when I plugged in a set of headphones the speaker stopped and the sound was redirected through the headphones. Unfortunately the sound quality through the headphones was incredibly poor, to the extent that you couldn't tell that it was the Sonic the Hedgehog theme tune. This issue occurs both with and without the potentiometer connected.
My current wiring setup is illustrated below - Have I got this right? Could it be a poor quality potentiometer/headphone jack, or a bad soldering job that is causing the issues?
Many thanks for everyone's help
This is my first build and I have been making slow yet steady progress. This was up until I addressed the audio for my Gameboy Zero.
I am using the Adafruit MAX98357A combo DAC/AMP along with an external speaker, headphone jack and a 5 pin potentiometer. By sifting through a few tutorials and the Adafruit website I was able to get sound coming through the speaker without the potentiometer connected, however upon integrating the potentiometer it caused the sound to go very quiet and crackly, even at full volume. I experienced similar issues with the headphone jack. As I said, sound through the speaker was crisp and clear and when I plugged in a set of headphones the speaker stopped and the sound was redirected through the headphones. Unfortunately the sound quality through the headphones was incredibly poor, to the extent that you couldn't tell that it was the Sonic the Hedgehog theme tune. This issue occurs both with and without the potentiometer connected.
My current wiring setup is illustrated below - Have I got this right? Could it be a poor quality potentiometer/headphone jack, or a bad soldering job that is causing the issues?
Many thanks for everyone's help