Fc 51 Ir Sensor Datasheet |best| -

When an object enters the detection range, the light reflects back to the photodiode.

Turning the onboard potentiometer clockwise usually the detection range (making it more sensitive). Counterclockwise decreases the range. This works by changing the comparator's reference threshold.

Detects reflected infrared light. It is tinted black to filter out ambient visible light interference.

Emits infrared light at a specific frequency. Fc 51 Ir Sensor Datasheet

One power LED (always on) and one signal LED (lights up when an object is detected). Pin Configuration

Keep in mind that the datasheet may vary depending on the manufacturer or the specific version of the sensor.

The FC-51 module relies on the reflection of infrared light to detect the presence of objects. How It Works: When an object enters the detection range, the

By following this guide, you'll be well-equipped to work with the FC-51 IR sensor and explore its many applications.

Place your target obstacle at the desired maximum detection distance.

There is a common confusion: the FC-51 can either be or Active HIGH depending on the manufacturer. The original design often outputs LOW when an object is detected and HIGH when no object is present . However, many clones invert this. Always test your module first. This works by changing the comparator's reference threshold

The FC-51 features a standard 3-pin interface, making it incredibly easy to connect to microcontrollers like Arduino, Raspberry Pi, or ESP32. Description Connects to 3.3V or 5V power supply GND Connects to the system ground OUT Digital output signal (LOW = Obstacle, HIGH = No Obstacle) Interfacing FC-51 with Arduino

This article provides a detailed overview of the FC-51 IR sensor datasheet, including its technical specifications, pinout, working principle, and practical application examples. 1. FC-51 Sensor Technical Specifications

The onboard photodiode (receiver) captures the reflected light. The intensity of the received light depends on the distance and surface color of the obstacle.

// FC-51 IR Sensor Connection Example const int SENSOR_PIN = 2; // OUT pin connected to digital pin 2 const int LED_PIN = 13; // Onboard Arduino LED void setup() pinMode(SENSOR_PIN, INPUT); // Set sensor pin as input pinMode(LED_PIN, OUTPUT); // Set LED pin as output Serial.begin(9600); // Initialize Serial Monitor void loop() int sensorState = digitalRead(SENSOR_PIN); // The FC-51 outputs LOW (0) when an obstacle is detected if (sensorState == LOW) digitalWrite(LED_PIN, HIGH); // Turn on LED Serial.println("Obstacle Detected!"); else digitalWrite(LED_PIN, LOW); // Turn off LED Serial.println("Path Clear"); delay(100); // Small delay to avoid flooding the serial monitor Use code with caution. Common Applications