https://forum.arduino.cc/t/8-ohm-0-5-watt-speaker-interface-with-arduino/1042123
https://forum.arduino.cc/t/getting-sound-level-from-audio-jack/525806 <<<<<<< HEAD
======= https://www.instructables.com/Animate-a-Billy-Bass-Mouth-With-Any-Audio-Source/
7990ca497c733fac807f361811f1fc7eb1afb82b