Fc 51 Ir Sensor Datasheet Link
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Power LED (Red) and Obstacle Detection LED (Green/Red depending on the manufacturer) Working Principle The FC-51 operates on the principle of infrared reflection.
If your FC-51 module is not behaving as expected, check the following common failure points:
The is an affordable, highly efficient, and easy-to-integrate module widely used in robotics, automation, and DIY electronics. It uses infrared (IR) light to detect objects within a specific range, making it a staple for projects like line-following robots, smart cars, and security systems.
Positioned across conveyor belts to count passing items as they break the IR beam. Fc 51 Ir Sensor Datasheet
At roughly 3.1cm x 1.4cm, it easily fits into small robotic chassis or tight assembly line setups. Cons & Limitations
Reflect IR light exceptionally well, resulting in maximum detection range.
Rotating clockwise increases sensitivity (longer detection distance). Rotating counter-clockwise decreases sensitivity (shorter detection distance).
The FC-51 IR sensor has the following features: If you need help building a specific circuit,
| Parameter | Value | | :--- | :--- | | | 3.3V – 5V DC | | Current Consumption | ~20mA (typical) | | Detection Range | 2cm to 30cm (Adjustable via potentiometer) | | Detection Angle | Approx. 35° | | Sensor IC | TCRT5000 | | Comparator IC | LM393 (Dual Voltage Comparator) | | Output Signal | Digital (TTL Logic) | | Operating Temperature | 0°C to +50°C |
If an obstacle appears in front of the sensor, the IR light reflects off the object and is directed back towards the sensor. Detection: The photodiode detects this reflected IR light.
If you are using a Raspberry Pi, ensure that you power the FC-51 module using the instead of 5V. The Raspberry Pi GPIO pins are not 5V tolerant, and feeding 5V into a GPIO pin from the OUT line could permanently damage your Pi. Wiring Diagram Raspberry Pi Pin Pin 1 (3.3V) Pin 6 (GND) Pin 11 (GPIO 17) Python Example Code
This article serves as a comprehensive datasheet and technical guide for the FC-51 IR sensor module, covering its technical specifications, pin configuration, internal working mechanism, schematic layout, and practical interfacing with microcontrollers like Arduino. Technical Specifications It uses infrared (IR) light to detect objects
If you're looking for the official datasheet of the FC-51 IR sensor, you can search for it on various online platforms, such as:
The FC-51 is an infrared sensor module capable of detecting obstacles in front of it. It works by emitting an infrared signal (via an IR LED) and detecting the reflection (via a phototransistor). If the signal reflects off an object, the sensor outputs a digital signal.
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 changing voltage from the photodiode is sent to the LM393 voltage comparator IC. The LM393 compares this signal against a reference voltage set by the user via the onboard potentiometer.