HiTechnic NXT Acceleration / Tilt Sensor

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Now you can make robots that know which way is up! The HiTechnic Accelerometer / Tilt Sensor measures acceleration in three axes.  It also measures tilt along each axis.

Description

Using the sensor, you can measure the acceleration of your robot build robots in the range –2g to + 2g. 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 NXT Acceleration Sensor contains a three-axis accelerometer that measures acceleration in three axes, x, y and z. Acceleration is measured in the range of –2g to +2g with scaling of approximately 200 counts per g.

The Acceleration Sensor connects to an NXT sensor port using a standard NXT wire and uses the digital I2C communications protocol. The acceleration measurement for each axis is refreshed approximately 100 times per second.

The Acceleration Sensor can also be used to measure tilt in three axes. This is possible because gravity is perceived as acceleration. When the sensor is stationary and in the normal horizontal position, the x and y-axis will be near zero, because they are horizontal, while the z-axis will be near 200, which represents one g. If you tilt the sensor then gravity will also be detected on the other axis and the value for the z axis will go down. Since gravity is distributed among the three component vectors, the tilt of the sensor can be determined.

HiTechnic NXT Acceleration / Tilt Sensor
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