1. The ability to beep at random intervals
2. Minimal parts needed (simplicity/elegance of design)
3. I wanted to use a microcontroller (because I recently started the journey of learning about microcontrollers)
This project was inspired by an article in MAKE magazine about making a similar device with a 555 timer chip.
After making my prototype, I searched instructables.com and found the Raven, which is a similar beeping thing using a microcontroller. I decided to add my instructable because it uses less parts and has random intervals.