In this blog, we will learn about how to interface a Passive Infrared sensor (PIR Sensor) or motion sensor with an Arduino. We will also learn about how this sensor works and different parts of it. So ...

We have built a very simple Motion detector circuit here. We are using a HC-SR501 PIR Sensor, an LED (which will glow whenever there is a motion infront of the sensor) and resistor.

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

When the PIR sensor will detect an intruder, it will send a signal to Arduino and the Arduino will sound an alarm. This circuit is very simple and will be designed on a Veroboard.

simple circuit with an Arduino and PIR motion sensor that can detect movement. An LED will light up when movement is detected.

PIR sensors are more complicated than many of the other sensors explained in these tutorials (like photocells, FSRs and tilt switches) because there are multiple variables that affect the sensors ...

Step 4: Assembling The Circuit Now as we have an idea about the working of this project, let us move ahead and assemble all the components together. As we are using the PIR motion sensor to detect the ...

TK has combined a PIR with an Arduino to create a smart safety light for the house or workshop. Follow along as this gets built out into a more extensive project.

Present consists of just a PIR sensor and Arduino in a 3D printed enclosure to snap onto your monitor.