VEX EDR Accessories - Electronics - Line Tracker - 276-2154
Program your robot to follow a black line over a white surface. This kit provides more design flexibility—you can also use it to program your robot for light sensing. A Programming Kit is needed to change the program in the VEX Controller.
Navigate down a marked path.
Use for light sensing.
More autonomous function.
A Line Tracker mostly consists of an infrared light sensor and an infrared LED. It functions by illuminating a surface with infrared light; the sensor then picks up the reflected infrared radiation and, based on its intensity, determines the reflectivity of the surface in question. Lightly colored surfaces will reflect more light than dark surfaces; therefore, lightly colored surfaces will appear brighter to the sensor. This allows the sensor to detect a dark line on a pale surface, or a pale line on a dark surface.
The Line Tracker allows your robot to follow a pre-marked path and allows humans to indirectly control the robot while it is autonomous.