A simple light system using Arduino and 1Sheeld.
The original code and diagrams are from the 1Sheeld examples in the library and website.
Easy to assemble by attaching your 1Sheeld to your Arduino in the usual way. Then follow the diagram and upload the code in the usual way. then connect your android or iphone to the 1Sheeld, use with the Mic sheeld in the app. place where you want to check the volume of what ever you want.
Change the values to increase or decrease the levels you want to show, if needed.
When running the leds will change as volume is higher or lower. More leds can be added by adding more of the code to set them at different levels.