Line Tracker

Introduction

The Line Tracker is an analog sensor that uses an infrared LED and light sensor to detect the reflectivity of the surface in front of it. It is designed to be mounted under the chassis of a robot so that the robot can follow a pre-marked path.

Below is a list of available blocks:

• Line Tracker reflectivity – Reports a value that represents the amount of light reflected from the surface as a percent.

Line Tracker reflectivity

The Line Tracker reflectivity reporter block reports a value that represents the amount of light reflected using the Line Tracker Sensor as a percent. This block can be used to help a robot follow a pre-marked path.

Note:

• 0% reflectivity means the object is very dark.

• 100% reflectivity means the object is very bright.

  ([LineTrackerA v] reflectivity in %)

Parameter	Description
device	Which Line Tracker to use, configured in the Devices window.