Light ON at night and light OFF in day all automatic! A single LDR and a BC547 transistor perform all these functions. This Smart Street Light Control Circuit is a easy and simple way to save energy and also there is no manual effort and no energy waste. Circuit Working: Parts List: Components Values Quantity […]
Sensors and Detectors
Obstacle Detection Circuit with 555 Timer and Ultrasonic Sensor
Want to build a smart obstacle detector without using Arduino? then this simple project uses a 555 timer and an ultrasonic sensor to sense distance and control a DC motor automatically. Also, it is easy to make with low-cost and perfect for beginners in electronics; therefore, this Obstacle Detection Circuit with 555 Timer and Ultrasonic […]
Temperature Controlled LED Circuit
This small Temperature Controlled LED Circuit can feel the heat! When we place near warm thing, it sense temperature and LED glow and it work very simple using one diode and one transistor only. No microcontroller, no sensor IC, just few parts and also we can build it easy at home and see how heat […]
LDR Based Dark Sensor Circuit
This small LDR Based Dark Sensor Circuit is very smart, as it can see light and dark using LDR. When there is light, everything stay quiet and when it becomes dark then LED start to glow and buzzer makes sound; also there is no need to touch anything it works by itself. In addition, it […]
Automatic Light Control Circuit using LDR and LM3909 IC
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 […]
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 […]