Fc 51 Ir Sensor Datasheet Link

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.

The FC-51 IR Sensor is a popular, cost-effective module used widely in robotics for obstacle avoidance and proximity detection. Using a simple infrared "reflection" principle, it identifies objects by bouncing IR light off surfaces and measuring the return signal. FC-51 Key Technical Specifications Specification Operating Voltage 3.0V – 6.0V DC Detection Range 2cm – 30cm (Adjustable via onboard potentiometer) Detection Angle Current Consumption ~23 mA at 3.3V; ~43 mA at 5.0V Output Type Digital signal (0 or 1) Onboard IC LM393 Dual Comparator Pinout Configuration

The module typically features a 3-pin interface, making it easy to wire to microcontrollers like Arduino: VCC: External 3.3V – 5V power supply. GND: External ground connection.

OUT: Digital output pin. It outputs a LOW signal when an obstacle is detected and HIGH when the path is clear. How It Works

The FC-51 consists of an infrared transmitter (transparent LED) and an infrared receiver (black photodiode).

Emission: The transmitter continuously sends out IR waves at a specific frequency.

Reflection: When an object enters the detection range, the IR waves bounce off the object’s surface.

Reception: The receiver tube picks up these reflected waves.

Comparison: The onboard LM393 comparator processes this signal. If the reflected light intensity exceeds the threshold set by the potentiometer, the module triggers the OUT pin to LOW and lights up the onboard "Obstacle" LED. Common Applications

Obstacle Avoidance Robots: Helping vehicles navigate without hitting walls.

Production Lines: Counting objects passing on an assembly line.

Security Systems: Acts as a simple "tripwire" for entry detection. Fc 51 Ir Sensor Datasheet

Proximity Sensing: Triggering actions when a user's hand or an object gets close. Quick Tips for Use

Calibration: Use the onboard potentiometer to adjust sensitivity. Turning it clockwise usually increases the detection distance.

Material Sensitivity: Black or dark objects absorb IR light and may not be detected as easily as white or reflective surfaces.

Ambient Light: While designed to be stable, extreme ambient light (like direct sunlight) can sometimes interfere with the IR receiver.

You can find the FC-51 IR Sensor at retailers like Art of Circuits or DIY Electronics. Detecting obstacle with IR Sensor and Arduino

The FC-51 IR sensor is a versatile and low-cost infrared obstacle avoidance module widely used in robotics, security systems, and DIY electronics. This module, often referred to as the "Flying Fish" sensor, uses a pair of infrared emitting and receiving tubes to detect obstacles within a range of approximately 2 cm to 30 cm. FC-51 Technical Specifications

The FC-51 module is designed for ease of integration with microcontrollers like Arduino, Raspberry Pi, and ESP8266. Specification Operating Voltage 3.0V – 6.0V DC (Typical: 3.3V or 5V) Current Consumption ~23 mA at 3.3V; ~43 mA at 5.0V Detection Range 2 cm to 30 cm (Adjustable via potentiometer) Detection Angle Output Type Digital (HIGH/LOW logic) Active Output Level LOW when an obstacle is detected PCB Dimensions 3.1 cm (L) x 1.4 cm (W) Pinout Configuration

The FC-51 features a simple 3-pin male header for quick connections. VCC: Power input pin (connects to 3.3V - 5V). GND: Ground pin (0V).

OUT: Digital output pin that provides a signal based on detection status. Working Principle

The module operates based on infrared reflection. 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

IR Infrared Obstacle Avoidance Sensor Module | FC-51 for Arduino The FC-51 is a workhorse of the hobbyist

The FC-51 IR Sensor: Your Robot’s Secret "Spidey Sense" Ever wondered how those clever little vacuum robots avoid tumbling down the stairs or crashing into your favorite vase? Most of the time, they’re using a "Spidey sense" powered by infrared light. At the heart of many beginner DIY projects is the FC-51 IR Obstacle Avoidance Sensor

, a tiny but mighty module that brings your creations to life.

If you’ve been hunting for the elusive "official" datasheet, you’ve probably noticed it's a bit like a ghost—everyone knows what it does, but the original manufacturer's document is hard to find. Here is the definitive breakdown of everything you need to know to master this sensor. 🛠️ Technical Specifications at a Glance

Think of the FC-51 as a digital gatekeeper. It doesn't tell you an object is; it just tells you something is there. distance with ir sensor fc-51 - Arduino Forum

Overview

The FC-51 IR sensor is a reflective infrared sensor that can detect the presence of objects within a certain range. It is commonly used for obstacle detection, line following, and other applications.

Datasheet Analysis

The datasheet for the FC-51 IR sensor provides the following key specifications:

Features

The FC-51 IR sensor has the following features:

Applications

The FC-51 IR sensor can be used in various applications, including:

Limitations

The FC-51 IR sensor has some limitations:

Conclusion

The FC-51 IR sensor is a reliable and easy-to-use infrared sensor module suitable for various robotics and automation projects. Its simple digital output and adjustable sensitivity make it a popular choice among hobbyists and professionals. However, its limited range and potential interference from environmental factors should be considered when designing applications.

Rating: 4.5/5

Recommendation: The FC-51 IR sensor is recommended for projects that require simple proximity sensing, obstacle detection, or line following. However, for more complex applications or longer detection ranges, alternative sensors may be more suitable.

The FC-51 uses Active LOW logic. This is crucial for programming.

The module typically features a 3-pin interface (sometimes 4 pins, though one is often unused). Features The FC-51 IR sensor has the following features: