The PIR motion sensor light wiring diagram is shown below. The basic idea is to amplify the output signal from the PIR sensor to control the relay, which, in turn, switches the bulb on or off. The ...

The automatic street light circuit is a practical application of a light-sensing system using an LDR (Light Dependent Resistor) and basic transistor switching. The core concept behind this system is ...

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 ...

Fig. 2: Circuit diagram for the automatic streetlight. Light-dependent resistor is a special type of resistor whose value changes with the intensity (brightness) of light falling on it. It has ...

In this project, we will see the Automatic Room Lights using Arduino and PIR Sensor, where the lights in the room will automatically turn ON and OFF by detecting the presence of a human. Such ...

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 ...

In this paper we propose a design using both a microprocessor and light sensors for automatic room light detection and control. Our design, the HLCM (home light control module) which will be installed ...