NXT and EV3 Inertial Motion Unit (Accelerometer and Gyroscope Sensor)
Build LEGO robots that can balance on 2 wheels and do so much more!  Measure tilt, acceleration, rotation all with one sensor for the Lego Mindstorms NXT and EV3!  This sensor lets you accurately detect and measure acceleration, tilt, and rotation for your NXT and EV3 projects on all three axes. The dIMU's gyroscope returns the number of degrees per second of rotation as well as indicating the direction of rotation. Measure +/- 2000 per second and build robots that can balance, swing or perform other functions where measurement of rotation is essential.  The gyroscope can read 250 dps, 500 dps, and 2000 dps.The dIMU Accelerometer / Tilt Sensor measures acceleration on three axes (x, y, and z). It also measures tilt along each axis. Using the sensor, you can measure the acceleration of your robot build robots in the range -8g to +8g. Great for experimenting with acceleration forces in cars, on amusement rides, even on swing sets. This sensor will also tell you if your robot is level so you can build self-leveling robots and much more.  The accelerometer can read 2g, 4g, and 8g.Software support in NXT-G, NXC/NBC, RobotC, Labview for Lego Mindstorms.