Light fence circuit is used to detect the presence of any human or object in a particular area. The detecting range of Light Fence Circuit is about 1.5 to 3 meters. It’s quite simple to design the ...

This light sensor switch circuit allows the automatic connection of a lamp when the light is low (at nightfall) and will maintain the lamp ON for a certain period of time. This time can be adjusted ...

Solar Garden Light Circuit Diagram The solar garden light circuit will consist of two parts. One is charging and the other one is to control the LEDs. The complete circuit diagram is explained as two ...

This automatic park light switch with LDR automatically turn ON the light when the surrounding light dims to a preset level. The first circuit diagram is an NPN design intended for negative grounded ...

Automatic Light Coding Arduino Uno is used to compute the logics of the two IR sensors. The circuit is controlled through the software loaded in internal memory of the Arduino. The program ...

Automatic Bathroom Light Circuit Diagram The author’s prototype is shown in Fig. 1 and the circuit diagram is shown in Fig. 2. The circuit comprises step-down transformer X1, a normally closed type of ...

Description This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than ...