Robots are immensely cool and allow us to learn more about the world we see every day. OpenROV is “cooler” because it lets us explore and learn about the world we can’t see; the last frontier of which we see only the surface usually.
Although there are many, many terrific projects on Kickstarter, this ranks as my all-time favorite to date. The OpenROV project is an open-source underwater robot for exploration and education. Their goal is to provide kits for the DIY community.