Hi, I recently purchased an MP3 shield, and I am trying to use a light sensor to control the MP3 volume, but unfortunately when the mp3 is operating the signal that goes through the analog pins, across the shield and to arduino is completely unreliable and 'noisy'.
If I plug the sensor directly into arduino everything works fine.
If I plug the sensor through the shield and NOT call mp3.init() things work as well
When I call MP3.init() then the signal goes crazy and is not reliable any more.
Any hints on how to fix this?
Thank you
Sergio