I built an alarm clock that wakes me up in the morning by slapping me in the face with a rubber arm. I picked apart a clock, wired it to an Arduino UNO and controlled a 165 rpm brushless DC motor through a relay. Electrodoodle by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) Source: http://incompetech.com/music/royalty-... A
![The Wake-up Machine VLOG](https://cdn-ak-scissors.b.st-hatena.com/image/square/5f1521bfa859489309a4c2f91acf0d94e07433f0/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FmXLzfAHl4-k%2Fhqdefault.jpg)