Light Sensor Project Using Transistor (LDR Tutorial for Beginners)

In this video, I demonstrate how to build a simple light sensor circuit using an LDR (Light Dependent Resistor) and a transistor. No Arduino required. This automatic system turns a LED ON or OFF depending on the ambient light level. What you’ll learn in this video: How an LDR (light sensor) works How a transistor acts as a switch Designing a light-controlled circuit Building an automatic lighting system without a microcontroller Some applications of this project: Automatic street lights Smart home lighting systems Energy-saving devices Components used: LDR (Light Dependent Resistor) NPN Transistor (2N2222) Resistors LED Power supply (battery) Breadboard & jumper wires This circuit shows how basic electronic components can be used to build intelligent systems without programming, which is essential for understanding core engineering principles. LDR light sensor circuit, transistor light sensor, automatic light circuit, LDR transistor project, electronics projects for beginners, no Arduino projects, simple automation circuit, light dependent resistor tutorial #LightSensor #ElectronicsProject #DIYElectronics #TransistorCircuit