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LDR Circuits

RGB LED Color Control Circuit with LDR and Arduino

Last updated on 24 June 2026 by Admin-Lavi Leave a Comment

Do anyone like lamps that change color with magic? then this project for RGB LED Color Control Circuit with LDR and Arduino makes its real. Using RGB LED and three LDR light sensors, we can create a smart lamp that mix colors based on light around it. Just a simple circuit and with some code, […]

Filed Under: Arduino Projects, Automation Circuits, IoT projects, LDR Circuits, LED and Lamps, Sensors and Detectors

LDR Light Sensor Circuit with Arduino

Last updated on 24 June 2026 by Admin-Lavi Leave a Comment

This project is for smart LDR Light Sensor Circuit with Arduino, it can feel light like human eye. When dark come, it turn ON lamp by itself and when light come, it turn OFF lamp automatic; so no need to press any switch. Also, it save time and save power and it is small, simple […]

Filed Under: Arduino Projects, Automation Circuits, LDR Circuits, Sensors and Detectors

LDR Based Aircraft Warning Signal Light Circuit

Last updated on 22 June 2026 by Admin-Lavi Leave a Comment

Tall buildings, towers and other high structures require warning lights to ensure aircraft safety and a red 230V LED bulb typically serves as the warning lamp. This LDR Based Aircraft Warning Signal Light Circuit automatically switches ON the bulb in night and switch OFF in day, also it uses LDR sensor, relay and small power […]

Filed Under: LDR Circuits, LED and Lamps, Security and Protection

Automatic Light Control Switch Circuit using IC 555

Last updated on 22 June 2026 by Admin-Lavi Leave a Comment

To begin with, this article is for Automatic Light Control Switch Circuit using IC 555, it works with light dependent resistor (LDR). When light falls on the LDR, its resistance changes, the 555 IC converts this resistance change into a switching signal and drives the relay; the relay can then control a lamp, fan, motor, […]

Filed Under: 555 Timer Projects, Automation Circuits, LDR Circuits, Sensors and Detectors, Transistor Circuits

12V Mini Emergency Light Circuit with LDR

Last updated on 22 June 2026 by Admin-Lavi Leave a Comment

12V Mini Emergency Light Circuit with LDR is simple project to make; here, light gets ON automatically when dark and it works with bright white LED and uses 12V battery. Also, the circuit is good for home, garage and emergency. Circuit Working: Parts List: Components Values Quantity Resistors 10k 1/4 watt 1 2.2k 1/4 watt […]

Filed Under: Automation Circuits, Hobby Circuits, LDR Circuits, LED and Lamps, Mini Projects

Light Controlled Switch Circuit using IC LM311 and LDR

Last updated on 19 June 2026 by Admin-Lavi Leave a Comment

This article talks about Light Controlled Switch Circuit using IC LM311 and LDR, as it simple and very useful and it feel light change near it. We find this circuit in many place like automatic light, street lamp and security system and main thing is about voltage comparator with LM311 IC. Then LDR sees light […]

Filed Under: Automation Circuits, DIY Projects, LDR Circuits, LED and Lamps, Sensors and Detectors

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