2cm to 30cm (Adjustable via onboard potentiometer) Detection Angle: 35°
Since I cannot browse the live web to provide a direct dynamic link, please replace [Insert Link] with a URL to a PDF hosted on a site like SparkFun, DatasheetsPDF, or a trusted electronics distributor. fc 51 ir sensor datasheet hot
A proximity sensor should not generate noticeable heat under normal 3.3V–5V operation. If it is hot to the touch, check the following: Arduino Forum 2cm to 30cm (Adjustable via onboard potentiometer) Detection
If you are stuck with the FC 51 but need stable performance, apply these fixes. If you accidentally connect the OUT pin directly
If you accidentally connect the OUT pin directly to the VCC rail or GND without a load, or if your microcontroller pin is incorrectly configured as an output driving an opposing voltage, it creates a short circuit.
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
Poorly. Sunlight contains strong IR. The sensor will run hot and false-trigger constantly. Add a physical hood or switch to a modulated IR sensor (TSOP series).