Fc 51 Ir Sensor Datasheet Here

The FC-51 module is designed for simplicity and low power consumption. Below are the absolute maximum ratings and typical operating characteristics. Electrical Characteristics 3.3V to 5V DC Operating Current: ≥is greater than or equal to

Direct sunlight or strong fluorescent lighting can saturate the IR receiver, causing false triggers. Avoid using this sensor in bright outdoor environments.

The infrared emitting tube continuously shoots out a beam of high-frequency infrared light.

Comprehensive Guide to the FC-51 IR Obstacle Avoidance Sensor: Datasheet, Pinout, and Arduino Integration

Placed near entryways to detect physical presence or movement through doorways. Fc 51 Ir Sensor Datasheet

Used in multi-sensor arrays for basic edge or line detection.

*Note: The EN (Enable) pin is rarely populated on standard breakout boards; usually, the sensor is always enabled.

The FC-51 IR sensor has the following features:

The LM393 comparator compares the voltage from the photodiode against a reference voltage set by the onboard potentiometer. The FC-51 module is designed for simplicity and

The effective detection range of the FC-51 depends on the reflectivity and color of the target object. Black objects absorb IR light (reducing range), while white objects reflect it efficiently (increasing range). Step-by-Step Tuning Power up the module with a 5V source.

The FC-51 is a workhorse of the hobbyist world: seductive in its simplicity, practical for many classroom and maker tasks, but brittle when stretched beyond its implicit assumptions. Read its datasheet as a starting point — then test aggressively, account for variability, and treat the module as a fast prototype, not the final measurement instrument.

// 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

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Placed along conveyor belts to count passing items in manufacturing setups.

The module features a compact design, an onboard potentiometer for sensitivity adjustment, and a dual-indicator LED system (one for power, one for obstacle detection status). Key Technical Specifications

The FC-51 module features a simple 3-pin interface header, making it exceptionally easy to connect to breadboards or microcontroller development boards. Pin Number Description Input Power Supply (3.3V - 5V DC) GND Ground Reference (0V) OUT Digital Output (Active LOW) Onboard Hardware Components

The following are the standard technical specifications for the FC-51 module. Please note that slight variations may occur between manufacturers.

While the FC-51 lacks a formal, manufacturer-published datasheet (most are generic Chinese modules), the specifications and behavior outlined above are universally accepted by the maker community. It is not a precision instrument, but for , it is an unbeatable workhorse for basic proximity sensing.