Arduino sketch for Vu-Meter tower controlled by Android Bluetooth App.

Video: https://www.youtube.com/watch?v=xfU36Tv937I

Android App: https://play.google.com/store/apps/details?id=appinventor.ai_willy8236.Arduino_VU_Controller_With_Brightness

Code taken from Cine-Lights: https://www.youtube.com/channel/UCOG6Bi2kvpDa1c8gHWZI5CQ