Sometimes, the best Arduino projects are the most ridiculous. Case in point, this motion-detecting squirt gun. The idea is simple: when it detects motion, the spray gun activates.

As many Arduino enthusiasts will tell you, they have a million ideas for projects but haven't completed nearly as many as they want. Here are some of the best Arduino projects we have found.

For those starting out in Arduino, there are tons of resources to get better acquainted with the community and the types of projects you can tinker with.

If you really want to show off your DIY skills, Arduino projects can be useful, beautiful, and impressive. Check out some of our favorites.