This alarm system utilizes a PIR sensor (Passive Infrared) to detect motion and a 2N2222 NPN transistor to drive an active buzzer. The 7.4V Li-ion battery provides power to both the sensor and the load. 1. Circuit Components • PIR S…
I am going outside the town for a week or so and during that period I wanted to install a surveillance system build with ES32-CAM , PIR sensor and maybe SD-Card to save the picture or video. I build simple video streaming system with ESP32-CAM …
Motion detection is a critical feature in many security systems and automation projects . One of the most common sensors used for this purpose is the Passive Infrared (PIR) sensor . PIR sensors are reliable, cost-effective, and easy to integrate in…
Automatic light switches are a modern solution to energy-saving and convenience in homes and workplaces. This post explains how to build a simple automatic light switch using a PIR sensor, a 5V relay, and a BC547 transistor. This design is efficient…
I recently started working on a project to create a PIR sensor-based alarm system that plays a melody when someone enters the detection zone. This could serve as a friendly warning or alert, for example, at the front door of a house. The idea is t…
PIR stands for Passive Infrared Sensor . It detects infrared radiation emitted by warm bodies, such as humans or animals, within its range. Unlike active infrared sensors, PIR sensors do not emit infrared radiation but passively detect it, making th…
Incorporating sensors into our homes can enhance safety by automatically monitoring for hazards. In this project, we’ll combine a PIR motion sensor and an MQ2 gas sensor with an Arduino to create a system that detects both gas leaks and motion. Th…
Motion detection is a critical aspect of security systems and automation projects. Passive Infrared (PIR) sensors are widely used for detecting motion due to their reliability, cost-effectiveness, and ease of integration. This blog post explores a …
Here PIR sensor with Arduino code is provided which turns on a LED when human or animal body is detected near the sensor. The human and animal body emits heat energy in the form of infrared radiation. The HR-SC501 passive infrared(PIR) sensor modul…
A human body radiates infrared signal which can be detected using PIR(Passive Infrared) sensor. When human body is detected nearby the sensor we can make sound alarm using buzzer or speaker to inform about intruder detection. Such PIR motion sensor …
Here an automatic light controller with Arduino is build. The automatic light controller turns on bulb only when it is required and is thus useful in saving power. The light bulb is connected to Arduino which is automatically turned on when the amb…
