LEGO MindStorms NXT User Manual

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Light Sensor
View
You can test the Light Sensor in different ways using View
[View]. Viewing refl ected light turns on the fl ood light in the
sensor.
Suggestions for use
You can add the Light Sensor to an NXT model and then
program the model behavior to change when the Light
Sensor is activated.
Programming ideas using the Light Sensor are included in the
Robot Educator.
Technology
Select the Refl ected light icon.
Select the port in which you have
placed the sensor.
Viewing Reflected Light to see Colors
Connect the Light Sensor to the NXT.
Select View in the NXT display.
Hold the Light Sensor close to the different colors in your surrounding
and see the different readings. You can use the color chart on page 66
of this guide or page 69 of the NXT Building Guide.
The Light Sensor enables the robot to distinguish
between light and darkness, to read the light intensity
in a room, and to measure the light intensity on
colored surfaces.
This is what your eyes see.
This is what your robot
sees using the light sensor.

LEGO MindStorms NXT Specifications

General

Processor	32-bit ARM7 microcontroller
Clock Speed	48 MHz
Memory	256 KB Flash, 64 KB RAM
Display	100x64 pixel LCD
Power	6 AA batteries or rechargeable battery pack
Sensors	Touch, Light, Sound, Ultrasonic
Motors	3 Interactive Servo Motors
Connectivity	Bluetooth, USB
Programming	NXT-G
Input Ports	4 sensor ports
Output Ports	3 motor ports