button control prototype

I really just wanted to have a working jukebox, so I built this.

features

Switches
Combined Volume and Track Select Sunctions
9v rechargable Lipo Battery

notes

Due to the 3.7v Lithium Ion battery being boosted to 9v and then immediately bucked down to 5v... The battery life is only 1.5-3 hours. And the mp3 module I used has a terrible stand-by current draw.