An Attiny85 Twist-to-Set Kitchen Timer

I like the old fashioned twist-to-set kitchen timers. It's so user friendly, but are not very helpful when it calls to time like 30 seconds for brewing some tea or coffer. On the other hand, I really don't feel like to press some buttons a number of times to set a digital kitchen timer. As a result, I often end up not using my digital timer and get very over brewed coffee and tea.

Anyway, I didn't find product of this kind in stores in Taiwan, so I started to design one my own. (Although I la