Fc 51 Ir Sensor Datasheet -

Potentiometer sensitivity is set too high, or ambient sunlight is interfering.

The module is designed for simple "object vs. no object" detection rather than precise distance measurement. Specification Operating Voltage 3.0V – 6.0V DC Current Consumption ~23 mA at 3.3V; ~43 mA at 5.0V Detection Range 2cm – 30cm (adjustable via potentiometer) Detection Angle LM393 Voltage Comparator Output Type Digital (HIGH/LOW) Board Dimensions ~3.1cm x 1.4cm (PCB) Pinout and Indicators

Sunlight contains massive amounts of ambient infrared radiation. The FC-51 does not feature advanced optical filtering, meaning bright sunlight or heavy incandescent overhead lighting will easily blind or falsely trigger the sensor. It is best used in indoor or shaded environments.

⚠️ : The FC-51 module is sometimes found under other brand names or model numbers, such as "MH-B" or "MH-Sensor-Series Flying-fish". Fc 51 Ir Sensor Datasheet

Digital Output Pin. Connect to any digital input pin on a microcontroller (Arduino, ESP32, Raspberry Pi, etc.). 4. Key Onboard Components

The comparator pulls the OUT pin and illuminates the obstacle indicator LED.

The FC-51 IR sensor is a popular and versatile infrared sensor module widely used in various applications, including robotics, automation, and electronics projects. To effectively utilize this sensor, it is essential to comprehend its datasheet, which provides critical information on its functionality, specifications, and usage. In this article, we will delve into the FC-51 IR sensor datasheet, exploring its features, technical specifications, and application examples. Potentiometer sensitivity is set too high, or ambient

Connecting the FC-51 to an Arduino Uno is straightforward. Follow the wiring schema and code structure below to create a basic object detection alarm. Wiring Diagram →right arrow Arduino 5V FC-51 GND →right arrow Arduino GND FC-51 OUT →right arrow Arduino Digital Pin 2 External LED (Optional) →right arrow

The FC-51 IR sensor module is a staple in the world of hobbyist electronics and prototyping. It provides a simple, efficient, and cost-effective solution for non-contact object detection and is ideal for a vast array of robotics and automation projects. While it lacks the official documentation of industrial sensors, the information compiled in this article serves as a definitive technical guide. By understanding its specifications, operational principles, calibration procedures, and limitations, you can successfully integrate the FC-51 into your next project and achieve reliable performance.

Adjustable from 2cm to 30cm (some variants reach up to 80cm). Detection Angle: Approximately 35°.

Digital signal (LOW when an obstacle is detected, HIGH when the path is clear).

Digital (0 or 1); "0" when an obstacle is detected, "1" when clear Dimensions: 1.5cm with a 3mm mounting hole IC Components Component Overview

A voltage comparator chip that processes the signal from the receiver to determine if an object is present.

The FC-51 module also has two onboard LEDs that provide immediate visual feedback: