Bobby and I worked on a Rube Goldberg Machine that followed the following path:
A vibrating motor with a cardboard arm taped on > a flex sesnor > an LED > a photocell (with a small cardboard hut over the led and photocell) > another LED > another photocell (with another cardboard hut over the two) > a speaker that played Twinkle Twinkle Little Star.
We chose each input and output because we were playing with the idea of an alarm clock.
We ran into a couple issues with the flex sensor being ultra sensitive, so maybe next time we could use a pressure sensor.
Unfortunately, we forgot to take a picture or a video – but hopefully you saw it in class!