Feature called "data logging" from version "2.0" of the NXT software for education have been added. And data logging is to collect information (data), is referred to as the "log" that is collected information. And here is the log, which means that the collected information about the NXT to a computer (such as the value of the sensor). Please note that the data logging function is not installed in the retail version of NXT software, and also to less than 2.0 version of NXT software is not installed. In addition, there are two types of how to do the data logging, plug in to the USB cable (measured in real time), without plug in the USB cable (remote measurement). I think here, taking advantage of the feature robot, I want to go without plug in the USB cable logging. (Takuya Matsubara)

Try to imitate a robot of "mobile color identification" has been registered in "Robot Educator" of the NXT software.

This robot is using a small number of simple parts. How to make of this robot has been introduced in detail in the "mobile identification color". Please assemble referring to it.

When you are finished making the robot will be as shown in the photograph. Output port A is connected to the motor, input port 3 is connected to a light sensor.

Since we want to know "How does the light sensor react?" I put black lines on the floor.

Print 3 lines on the paper of A4 size, I tried to place with cellophane tape on the floor (PDF file for printing here).
There are three types of line thickness of 10mm, 20mm and 30mm.