SunFounder PiCar-X Kit
4. Press the “Q” key to initiate the greyscale calibration. You’ll then observe the PiCar-X make minor movements
to both the left and the right. During this process, each of the three sensors should sweep across the electrical
tape at least once.
5. Additionally, you will notice three pairs of significantly different values appearing in the “threshold value” sec-
tion, while the “line reference” will display two intermediate values, each representing the average of one of
these pairs.
46 Chapter 4. Play with Python
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