This Circuit can compare the Light level in an area. It uses a PN Photodiode as the light sensor and IC CA3140 as voltage comparator. The circuit is ideal as the front end of burglar alarm circuits.

Now we can stepped into the light with our favorite microcontroller Arduino! Since a vast number of analog/digital ambient light sensors/light sensor modules are now available at reasonable price, ...

Today, we are building a simple Arduino-based project: a light-following robot. This project is perfect for beginners, and we'll use LDR sensor modules to detect light and an MX1508 motor driver ...

HOUSE STRUCTURE of the sensor: The structure is capable of varying the distance between the sensor (photodiode) and the input (LED): on one end of a wooden panel the Arduino with the sensor was fixed, ...

Wavelength sensing using ultra low cost electronic circuits is a prime demand in numerous industrial systems. This work proposes an approach towards wavelength sensing in fiber optic devices using a ...

Pinned Photodiode (PPD): A specialised photodiode design in CMOS sensors that minimises noise and allows for enhanced dynamic range by optimising charge transfer mechanisms.

Fluorescence optical fiber temperature sensors have found widespread use in harsh environments with electromagnetic interference, high voltages, flammability, and combustibility due to their excellent ...