The Mysterious Case of the Overheated IR Sensor
| Parameter | Value | | :--- | :--- | | Operating Voltage | 3.3V to 5V DC | | Current Consumption | 20mA to 40mA (LED + comparator) | | Detection Distance | 2cm to 30cm (adjustable) | | Sensing Angle | 35 degrees | | Output Type | Digital (TTL) – Active Low (0V when obstacle detected) | | Comparator IC | LM393 or LM358 | | Indicator LEDs | Power (Red), Output (Green) | | PCB Dimensions | 32mm x 14mm | fc 51 ir sensor datasheet hot
The FC-51 IR sensor is a compact, low-cost infrared sensor module that detects the presence of objects or people. It consists of an infrared emitter and receiver pair, which work together to detect obstacles or changes in the environment. The sensor is based on the principle of infrared radiation, which is emitted by all objects at temperatures above absolute zero. The Mysterious Case of the Overheated IR Sensor
FC-51 IR Obstacle Avoidance Sensor is a cost-effective, versatile module designed for proximity detection in electronics projects. Whether you are building an autonomous robot or a touchless alarm system, understanding this module's technical specifications and calibration is key to successful integration. FC-51 Core Technical Specifications Cause: Overheating LM393 or failing voltage regulator
The module runs warm because of the linear regulator and continuous IR LED drive. As long as you can touch it for a few seconds without burning, it’s likely fine. If it smells or exceeds ~75°C, cut power and inspect your wiring.