[Kim Salmi] created an ASCII-based quadcopter simulation game using an Arduino that displays on the Arduino serial monitor ... the height and left-right motion of the quadcopter on the screen.

There are many different sensors that can be used to detect motion in a given environment. Passive InfraRed (PIR) sensors are the most used today, as they work by detecting moving heat signatures.

Makers, developers and hobbyists looking to at the ability to monitor motion ... Arduino project may be interested in a new breakout board offering an all-in-one 9 Degree of Freedom (9-DoF) sensor ...