Yl-105 Datasheet

If you can describe or upload a picture (though I can't see it), or answer these questions, I can give you a specific pinout and application note:

If you’ve been searching for “YL-105 datasheet” , you’re likely working on a robotics or electronics project involving obstacle avoidance or line sensing. The YL-105 is a popular, low-cost infrared (IR) sensor module often sold alongside Arduino starter kits.

However, there’s a common frustration: the YL-105 is a clone of the more widely documented TCRT5000 sensor module. You will rarely find an official datasheet labeled “YL-105,” but don’t worry—by understanding the hardware, you can use the TCRT5000 datasheet as your go-to reference. yl-105 datasheet

Here is everything you need to know, pulled from the technical specifications of its underlying components.

Because the YL-105 acts like a digital switch, wiring is simple. If you can describe or upload a picture

Wiring:

Arduino Sketch:

const int sensorPin = 7;  // Digital input
const int ledPin = 13;     // Built-in LED
void setup() 
pinMode(sensorPin, INPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600);

void loop() 
int sensorState = digitalRead(sensorPin); Arduino Sketch: const int sensorPin = 7; //
if (sensorState == LOW)   // Object or white surface detected
digitalWrite(ledPin, HIGH);
Serial.println("Detected!");
 else 
digitalWrite(ledPin, LOW);
Serial.println("Clear");
delay(100);