5 LDR Circuits: Latching, Timers, Light & Dark Sensors || Step-by-Step Tutorial

A tutorial showing five ways in which LDR can be used to make light/dark sensing circuits: 1. Dark Sensor Circuit - LED (output) glows when darkness detected 2. Light Sensor Circuit - LED glows when light detected 3. Latching Circuit - LED glows until any obstacle cuts the latching mechanism 4. Dark Timer Circuit- LED glows for some time after darkness detection 5. Light Timer Circuit- LED glows for some time after light detection Circuit diagrams and other details : https://www.instructables.com/id/5-LDR-Circuits-Latching-Timers-Light-Dark-Sensors CIRCUIT applied to PROJECT : *Night Sensing Penstand https://www.youtube.com/edit?o=U&ar=3&video_id=7ZEd4Ai6osQ Forewords 0:00 Components Required: 1. Dark Sensor Circuit 0:23 • LDR • Transistor: BC547 • Resistors: 47K, 330Ω • LED 2. Light Sensor Circuit 1:22 • LDR • Transistor: BC547 • Resistors: 1K, 330Ω • LED 3. Latching Circuit 2:08 • LDR • Transistor: BC547 • Resistors: 1K, 330Ω • LED 4. Dark Timer Circuit 2:42 • LDR • IC 555 • Capacitor: 47μF • Resistors: 47K, 4.7K, 330Ω • LED 5. Light Timer Circuit 4:30 • LDR • IC 555 • Capacitor: 47μF • Resistors: 47K, 4.7K, 330Ω • LED Other Requirements: • Battery: 9V and battery clips • Breadboard • Breadboard Connectors For more such videos, Do Subscribe: https://www.youtube.com/c/Molted