Fc 51 Ir Sensor Datasheet Review

The FC-51 IR sensor is a compact, low-cost infrared sensor module that detects the presence of objects or people within a certain range. It consists of an infrared LED, a photodiode, and an amplifier circuit, all integrated into a single module. The sensor operates on the principle of infrared radiation, which is emitted by all objects at temperatures above absolute zero.

The heart of the FC-51 module is the LM393 integrated circuit. This chip compares the analog voltage coming from the IR photodiode against a reference voltage set by the user. Because it handles the analog-to-digital translation on-board, your microcontroller does not need an Analog-to-Digital Converter (ADC) pin to read this sensor. Onboard Potentiometer

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.

The module operates based on . An onboard IR LED (the transparent transmitter) continuously emits infrared light. When an object enters the detection range, the light bounces off the object's surface and is captured by the IR receiver (the black photodiode). Go to product viewer dialog for this item. Googlehttps://www.google.com Fc 51 Ir Sensor Datasheet

The following specifications are typical for the standard FC-51 module. Always check your specific vendor datasheet, but the values below are industry-standard.

Reflect maximum IR light, resulting in the maximum detection range (up to 30cm).

The module typically features a 3-pin header for easy interfacing: Connect to 3.3V - 5V power source. GND: Connect to the circuit ground. The FC-51 IR sensor is a compact, low-cost

Choose FC-51 for simple “object present/not present” binary detection from 2-30 cm. Avoid for distance measurement or shiny/black objects.

Detects reflected infrared light.

The infrared receiver tube accepts the reflected signal. The heart of the FC-51 module is the

The it will operate in ( indoors, outdoors, high ambient light ) What load you want to trigger ( relay, buzzer, motor )

| Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | | Digital output signal (HIGH = no object, LOW = object detected) | | 2 | VCC | Power supply input (3.3V or 5V) | | 3 | GND | Ground (0V) |