51 Ir Sensor Datasheet Extra Quality: Fc

While the FC-51 lacks a formal, manufacturer-published datasheet (most are generic Chinese modules), the specifications and behavior outlined above are universally accepted by the maker community. It is not a precision instrument, but for , it is an unbeatable workhorse for basic proximity sensing.

Adapted from public examples.

However, finding a clear, consolidated datasheet for the FC-51 can be frustrating. Most sellers provide only a pinout diagram. In this post, we have compiled the essential technical specifications, pin configuration, wiring guide, and application tips you would find in a standard datasheet.

It is common to see the FC-51 and TCRT5000 compared, as both are IR-based reflective sensors. However, they are designed for different purposes. Here is a quick comparison: Fc 51 Ir Sensor Datasheet

If the reflection is strong enough (meaning an object is close), the module drives its digital output pin ( OUT ) LOW (0V) and illuminates the onboard obstacle indicator LED. If no obstacle is present, the output remains HIGH (VCC) . 2. Technical Specifications Specification Value Operating Voltage (VCC) 3.3V to 5V DC Operating Current ≥is greater than or equal to Output Type

If the obstacle LED stays on constantly, the sensitivity is set too high, or the sensor is pointing directly at a highly reflective surface. Turn the potentiometer counterclockwise to reduce sensitivity.

2cm to 30cm (adjustable via onboard potentiometer). Detection Angle: ~35°. However, finding a clear, consolidated datasheet for the

void setup() pinMode(sensorPin, INPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600);

The FC-51 module features a simple, standardized 3-pin interface, making it easy to connect directly to microcontrollers like Arduino, Raspberry Pi, or ESP32. It is common to see the FC-51 and

| Parameter | Min | Typical | Max | Unit | Conditions | | :--- | :--- | :--- | :--- | :--- | :--- | | | 3.0 | 5.0 | 5.5 | V | – | | Supply Current (Icc) | 15 | 23 | 35 | mA | No load, LED on | | Output Voltage High (VOH) | Vcc - 0.5 | Vcc - 0.2 | – | V | Iout = 0 mA | | Output Voltage Low (VOL) | – | 0.1 | 0.4 | V | Iout = 15 mA | | Output Current (Source/Sink) | – | 15 | 20 | mA | – | | Detection Range (White paper) | 2 | – | 30 | cm | Adjustable via potentiometer | | Detection Range (Black surface) | 1 | – | 8 | cm | Lower reflectivity | | Frequency of IR carrier | – | 38 | – | kHz | Modulated signal | | Operating Temperature | -10 | 25 | 70 | °C | – | | Response Time | – | 2 | 5 | ms | Depends on comparator slew rate |

Q: Can the FC-51 IR sensor be used with Arduino? A: Yes, the FC-51 IR sensor can be easily interfaced with Arduino and other microcontrollers.