LEGO Mindstorms NXT 2.0 - Page 30

E
NXT
TECHNOLOGY
Po COLOR sensor
The Color Sensor is one of the sensors that gives your
robot vision (the Ultrasonic Sensor is the other]. The
Color Sensor actually has three different functions in
one. The Color Sensor enables your robot to distin-
guish between colors and light and dark. It can detect 6
different colors, read the light intensity in a room and
measure the light intensity of colored surfaces. The
Color Sensor can also be used as a Color Lamp.
| Suggestions for use
You can use the Color Sensor to sort your LEGO" bricks, or to
make a robot that will Follow a red line or change direction
when it detects a red spot. You can also use the sensor as a
color lamp to give your robot extra personality.
Using the sensor as a color sensor
To get optimal color detection, the sensor should be held at a
right-angle approximately 1 cm to the surface. Incorrect color
readings can occur if the sensor is held at other angles to the
surface or if it is used in bright light.