Line Tracking Sensor

https://www.keyestudio.com/free-shipping-keyestudio-line-tracking-sensor-module-white-black-line-detector-for-arduino-uno-r3-mega-2560-r3-p0152.html

Introduction

This Line Tracking Sensor can detect white lines in black background and black lines in white background. The single line-tracking signal provides a stable output signal TTL for a more accurate and more stable line. Multi-channel option can be easily achieved by installing required line-tracking robot sensors.

Specification

Power supply: +5V

Operating current: <10mA

Operating temperature range: 0°C ~ + 50°C

Output interface: 3-wire interface (1 - signal, 2 - power, 3 - power supply negative)

Output Level: TTL level

Sample code:

void setup()

{

Serial.begin(9600);

}

void loop()

{

Serial.println(digitalRead(3)); // print the data from the sensor

delay(500);

}

See product video: https://youtu.be/WU4SAznKnhc