The Light Sensor is
one of the two sensors that give your robot vision [The Ultrasonic
Sensor is the other]. The Light Sensor enables your robot to distinguish
between light and dark. It can read the light intensity in a room and
measure the light intensity of colored surfaces.
Suggestions for use
You can use the Light Sensor to make a burglar alarm robot: when an
intruder turns on the light in your room the robot can react to defend your
property. You can also use the Light Sensor to make a line-following robot
or a robot that can sort things by color.
Detecting ambient [surrounding] light
Test the Light Sensorís ability to read ambient light by measuring
the light level in different locations of the room. For example, first hold
the sensor against the window. Then hold it under the table. Watch how the
Test Light Sensor readings. Hereís how:
the Light Sensor to the NXT.
2. Select the View submenu on the NXT display.
Select the Light Sensor icon and the port
where you have connected the sensor, and press the orange Run
3. Hold the Light Sensor up to the different colors on the test pad that
came with your kit and see the different readings.
||The NXT comes with a Try Me function. Connect a Touch Sensor to port 1
of the NXT and select the Try Me submenu on the NXT to test your Light
Sensor. Youíll get a fun reaction.