Fc 51 Ir Sensor Datasheet Hot ((hot)) Jun 2026

Buy Obstacle Avoidance IR Sensor Module at Low Price In India | Robu.in The effective distance range of 2cm to 80cm. Infrared Sensors Specs, Operation, Types and Applications

This creates a massive short-circuit condition. The LM393 IC will become scalding hot within seconds and will likely fry if left connected. 2. Excessive Supply Voltage The FC-51 is strictly rated for a maximum of 5V DC.

: The IR receiver (photodiode) captures the reflected light, shifting its internal resistance. The LM393 comparator checks this voltage against a reference threshold set by the manual adjustment trim.

Some FC-51 clones drive the IR LED at higher-than-spec continuous current to increase range. Instead of 20 mA, they might push 40–60 mA, heating both the LED and the LM393. fc 51 ir sensor datasheet hot

Digital Output (LOW when obstacle is detected, HIGH when not) Indicators: Dedicated Power LED and Obstacle Detection LED Comparator IC: LM393 2. Working Principle of the FC-51

The FC-51 features a simple 3-pin male header layout. This layout allows for seamless prototyping with standard jumper wires. : Power supply input (3.3V to 5V). GND : System ground (0V reference).

Since I cannot browse the live web to provide a direct dynamic link, please replace [Insert Link] with a URL to a PDF hosted on a site like SparkFun, DatasheetsPDF, or a trusted electronics distributor. Buy Obstacle Avoidance IR Sensor Module at Low

A common query regarding the FC-51 is that it runs "hot" to the touch. This can be normal within limits, or it can indicate an issue.

If your microcontroller supports 3.3V logic (like an ESP32, Raspberry Pi, or Arduino Due), power the FC-51 with 3.3V instead of 5V. This reduces the overall current draw and keeps the module operating much cooler.

const int SENSOR_PIN = 2; // Connect OUT pin to Digital Pin 2 const int LED_PIN = 13; // Onboard Arduino LED void setup() pinMode(SENSOR_PIN, INPUT); // Sets pin to high impedance (Safe) pinMode(LED_PIN, OUTPUT); Serial.begin(9600); void loop() int sensorState = digitalRead(SENSOR_PIN); // FC-51 outputs LOW (0) when an obstacle is detected if (sensorState == LOW) digitalWrite(LED_PIN, HIGH); Serial.println("Obstacle Detected!"); else digitalWrite(LED_PIN, LOW); Serial.println("Clear Path"); delay(100); Use code with caution. The LM393 comparator checks this voltage against a

If connecting to an Arduino, ensure it is plugged into the or 3.3V pin, not the VIN pin (which outputs raw input voltage).

SENSOR_PIN = 21 GPIO.setmode(GPIO.BCM) GPIO.setup(SENSOR_PIN, GPIO.IN)