Fc 51 Ir Sensor Datasheet Hot Hot! Today
When you hear "FC-51 Infrared Sensor," you likely think of a line-following robot or an Arduino tutorial. However, this tiny, affordable component ($2–$5) is the unsung hero of many modern lifestyle conveniences and interactive entertainment projects. By detecting objects and movement without physical contact, the FC-51 bridges the gap between the digital and physical worlds.
The FC-51 utilizes an LM393 dual voltage comparator IC as its processing core to deliver a clean, fast-switching digital output signal free of continuous analog jitter. Core Parametric Ratings Rated Value Stable logic integration at Current Consumption ( ) Lower baseline draw Current Consumption ( ) Maximum typical draw due to IR transmitter Detection Distance Range Configurable via on-board trim potentiometer Effective Detection Angle 35∘35 raised to the composed with power Cone-shaped tracking path Output Type Digital Signal Active-LOW logic scheme Active Output Level Triggered when a reflection is registered In-Active Output Level Default state when line-of-sight is completely clear PCB Form Factor Overall length: including sensor LEDs Hardware Architecture & Pin Configuration
If connecting to an Arduino, ensure it is plugged into the or 3.3V pin, not the VIN pin (which outputs raw input voltage).
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The is a common infrared (IR) obstacle avoidance module typically used for basic proximity detection. Because it is a "hobbyist-grade" component, a single formal scholarly paper focused solely on its datasheet is rare. However, the most relevant academic research for this specific module is a very recent paper (December 2024) that analyzes its performance limitations. Featured Academic Paper
Digital Logic (LOW when an obstacle is detected, HIGH when clear) Power LED (Red) & Obstacle Detection LED (Green/Red) PCB Dimensions 3.1 cm × 1.4 cm (Overall length including LEDs: 4.5 cm) Hardware Architecture and Pinout
Input = 9V, Output = 5V, Current draw = 50 mA Power dissipated = (9V – 5V) × 0.05A = 0.2 Watts In a small SOT-23 package, that’s noticeably warm (~40–50°C). fc 51 ir sensor datasheet hot
delay(100); // Small delay for stability
FC-51 IR Obstacle Avoidance Sensor is a popular module for robotics and automation, primarily used for proximity detection and obstacle avoidance
If possible, power the sensor at 3.3V instead of 5V to reduce power consumption. When you hear "FC-51 Infrared Sensor," you likely
Small footprint with a 3mm screw hole for easy mounting on robot chassis. Technical Specifications Specification Operating Voltage 3.3V to 5V DC Detection Distance 2cm to 30cm (Adjustable via potentiometer) Detection Angle Output Type Digital Logic (Low = Object detected, High = No object) IC Controller LM393 Voltage Comparator Current Consumption Pin Configuration The module typically features a 3-pin header: VCC: Connects to power (3.3V - 5V). GND: Connects to the common ground. OUT: Digital output pin connected to the microcontroller. Typical Applications
: Digital (outputs 0 when an object is detected and 1 when the path is clear).
What are you using to power the sensor?
