सिर्फ LDR और Transistor से बनाएं Auto Light System | Easy DIY
Автор: Techsun Idea
Загружено: 2025-06-04
Просмотров: 125
🔌 Automatic Light ON/OFF Using LDR | No Arduino | Simple DIY Electronics Project 🔌
In this video, I’ll show you how to make a simple automatic light control circuit using LDR (Light Dependent Resistor) and a transistor — without using Arduino or any microcontroller! 😍
This project is perfect for beginners who want to learn basic electronics and create a useful home automation system.
📌 What You’ll Learn:
How LDR works to detect light
How to build a light-sensitive switch using a transistor
How to connect an LED or 230V bulb via relay for auto ON/OFF
🧰 Components Used:
LDR (Light Dependent Resistor)
BC547 Transistor (or any general-purpose NPN)
100k ohm Resistors
LED
Power Supply (5V/12V depending on the relay)
⚡ Working Principle: When it gets dark, the resistance of the LDR increases, triggering the transistor and activating the light. In daylight, the circuit turns the light off automatically.
✅ No Arduino, No Programming, Just Pure Electronics!
📺 Watch till the end for the full working demo and explanation.
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#LDRProject #AutomaticLight #HomeAutomation #DIYElectronics #NoArduino

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