We decided to create a PIR activated motion sensor alarm system for our IOT project.
How it works:
The PIR sensor senses heat from individuals in its line of sight. This sensor can sense changes in heat up to 7 meters away, with nearly 180 degrees of viewing angle. When the sensor reads the change in heat nearby (like the motion of some heat source, it changes its signal to the Argon board, which then creates an "event" through the internet, of which the second argon board picks up on. When the second Argon reads the signal, it flashes an LED to alert the user that the PIR sensor has detected movement. After that happens, the second Argon creates an event on the internet that the first Argon board picks up on, causing the first Argon to light up another LED, essentially portraying a confirmation that the second board has received the message, demonstrating successful two-way communication. This 2-way communication can be useful for activating cameras from remote locations, small sirens, or confirmation that other objects that may be deemed useful to deter violent, hardened criminals that are ready to strike with dangerous weapons.
Below is a screenshot of a chart showing the motion detected by the Argon.
The link to a live feed can be found by the following url:
You can also check out our quick video showing how our alarm can help you!