Project 3 : Line Tracking Sensor - Keyestudio Smart Little Turtle Robot V3 Manual

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analogWrite (ledPin, value); // LED gradually goes out
delay (30); // delay 50MS
}
}
//***********************************************************
Upload the code to development board, LED flickers more slowly.

Project 3 : Line Tracking Sensor

(1) Description
reflectivity of infrared light to the color, then convert the strength of the
reflected signal into a current signal.
During the process of detection, black is active at HIGH level, but white is
active at LOW level. The detection height is 0-3 cm.
Keyestudio 3-channel line tracking module has integrated 3 sets of
TCRT5000 infrared tube on a single board, which is more convenient for
The tracking sensor is actually an infrared sensor.
The component used here is the TCRT5000 infrared
tube.
Its working principle is to use the different
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