Lesson 10 Tracking Function
In this lesson, we will learn how to use tracking function of PiCarPro.
10.1 Tracking Module
Classic Car and Racing Car are driving on the white paper "road" with black
lines. Because the black line and white paper have different reflection coefficients of
light, the "road" can be judged according to the intensity of the received reflected
light-black line . In the Tracking module, a more common detection method-infrared
detection method is used.
Infrared detection method uses infrared rays to have different reflection
properties on different colored physical surfaces. When the car is running, the infrared
light is continuously emitted to the ground. When the infrared light meets the white
ground, the diffuse emission occurs, and the reflected light is received by the
receiving tube installed on the car;if it encounters a black line, the infrared light is
absorbed, and the receiving tube on the car cannot receive the signal.
10.2 Preparation
1. The assembled PiCarPro. The tracking module is fixed under the center hole
of the front wheel of the PiCar Pro chassis by a 15mm nylon column. Use M3*4
screws. Note: When not using the tracking function or driving on the ground with
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