Fc 51 Ir Sensor Datasheet Hot __hot__ Jun 2026

Place the FC-51 inside a dark drawer or wardrobe. The moment you open it, the sensor detects the change in reflection (or your hand reaching in) and turns on an LED strip. No more fumbling for clothes in the dark.

FC-51 IR Sensor Datasheet: Understanding the Hot Commodity in Obstacle Avoidance

Features an onboard potentiometer to adjust the detection range based on the environment.

Cover each FC-51 with a colored plastic dome. When a player’s hand covers a dome, the sensor detects the reflection drop and lights up an LED. Build a “reaction time” game with just an Arduino and a few sensors.

: Digital (outputs 0 when an object is detected and 1 when the path is clear). fc 51 ir sensor datasheet hot

The most common mistake is powering the sensor with an unregulated power source, a 9V battery, or a 12V rail. The FC-51 is strictly rated for a maximum of 5V. Supplying anything higher forces the onboard components (like the LM393 comparator) to handle voltage levels they were never designed to withstand, resulting in extreme heat generation. 2. Reverse Polarity (Wrong Wiring)

Can differentiate between black (absorbs IR) and white (reflects IR) surfaces.

| | FC-51 | TCRT5000 | | :----------------- | :-------------------------------------------------- | :------------------------------------------------- | | Primary Use | Obstacle Avoidance / Proximity | Line Following / Reflective Sensing | | Typical Range | 2cm - 30cm | 1mm - 8mm (very short range) | | Output | Digital (HIGH/LOW via LM393 comparator) | Analog (reflected light intensity) | | Best For | Detecting objects at a short distance | Distinguishing between black and white surfaces |

Is the sensor , or has it stopped functioning entirely? Share public link Place the FC-51 inside a dark drawer or wardrobe

delay(100); // Small delay for stability

The FC-51 is easy to interface with microcontrollers like Arduino, ESP32, or Raspberry Pi. Connect to 3.3V - 5V GND: Connect to GND OUT: Digital Output Pin Sample Arduino Code

✅ obstacle detection ✅ Simple 3‑wire interface ✅ Adjustable range (2 cm – 30 cm) ✅ Instant visual feedback (on‑board LED) ✅ 3.0–6.0 V operation (compatible with 3.3 V and 5 V systems)

A: Surprisingly, a 2024 academic study tested the FC‑51 under dust concentrations ranging from 8 mg/m³ to 900 mg/m³ and found that detection remained stable. However, heavy soiling of the lens will eventually degrade performance. FC-51 IR Sensor Datasheet: Understanding the Hot Commodity

Alex chuckled. "Hey, in the world of electronics, you never know when a hot tip (pun intended) might just save the day!"

The reflected infrared light is picked up by the photodiode.

while True: if ir.value() == 0: # LOW = obstacle detected print("Object detected!") else: print("Nothing there") time.sleep(0.2)