This Automatic Light Control Circuit using LDR and LM3909 IC is small and smart light sensor circuit which can feel light and dark like magic; also it uses few circuit parts like LDR, LM3909 IC, capacitor and an LED. When dark come, LED turns ON and when light come, LED goes OFF, which is perfect […]
Sensors and Detectors
LDR Light Sensor Circuit using BC547
To begin with, this LDR Light Sensor Circuit using BC547 works by itself; when it is dark the LED turns ON and when light comes then LED turns OFF. LDR feels the light and controls the LED and there is no need to press any switch. Additionally, this simple and very low-cost circuit works well […]
Electronic Eye Circuit using IC 4049
This project is for small Electronic Eye Circuit using IC 4049, which can sense darkness or shadow. When light falls on the LDR, the circuit remains OFF and when an object blocks the light, the LED and buzzer turns ON; moreover, this circuit also works like a magic eye and is useful for security systems […]
IR Burglar Alarm Circuit
Want to protect our home or room from intruders? then this simple IR Burglar Alarm Circuit is our smart security buddy! It uses invisible IR light to sense any movement or break in the beam; the moment someone crosses the path, a loud buzzer alerts us instantly. Moreover, its easy to build, with low cost […]
Simple Human Touch Sensor Circuit with Transistor
A human touch can do magic! So this Simple Human Touch Sensor Circuit with Transistor shows how a tiny finger touch can switch ON a light; therefore, no switch, no button just a skin current makes it work. Also, it is a cool and educational mini project for learners. Circuit Working: Parts List: Components Values […]
Smart Energy Meter Circuit with Arduino UNO
Electric bill increasing day by day; so we need smart way to measure power use. Here is a simple project using Arduino UNO, ACS712 current sensor and 16×2 LCD with I2C and it shows real time current, voltage and power. Also, this project for Smart Energy Meter Circuit with Arduino UNO help to monitor load […]