With me so far? Here is a list of projects that you can do with an Arduino that are fun, relatively easy, and incredibly ...

PWM pins in the diagram have the same tilde sign in front of the pin numbers. PWM pins are generally used in controlling output devices in Arduino projects. To send a PWM value to a PWM-capable ...

but [Duckman] has some Arduino pinout diagrams he made using ASCII-art. These could be useful when pasted into source code as comments, documenting the pinouts for your project.