Parts sourced from Mouser
PCB manufactured by BatchPCB
This was so much fun! It was my first surface mount project, went really smoothly! The battery it attached to the back. If you are building this and need any help, let me know! I just followed the Instructable, I didn't make any modifications to either the circuitry or the source code. I would like to add some features, for example, a stopwatch, a timer (countdown clock), and a more advanced settings menu.