My most challenging project (which tested my patience more than any) was creating "Mood" calming lamp. Using Arduino and metal conductors as GSR sensors, I created a lamp that would act as an ambient mood changer. After researching into how different colours affect a persons stress levels, I chose and coded which colours I felt would be suitable for the lamp to change to when touched.

 

Video link: https://www.youtube.com/watch?v=dTzGf41It4s