A PIR motion sensor alarm is a device which detects the infrared radiation from a moving human body and triggers an an audible alarm. The post discuses 4 simple motion detector circuits using op … [Read more...] about 4 Simple Motion Detector Circuits using PIR
PIR Sensor Datasheet, Pinout Specifications, Working
In this post we are going to explore the datasheet of PIR or Pyroelectric Infrared Radial Sensor HC-SR501. We will understand for what purpose PIR sensor is used? Its basic trigger operations, pin … [Read more...] about PIR Sensor Datasheet, Pinout Specifications, Working
PIR Solar Home Lighting Circuit
The post explains a simple circuit using Passive Infrared or PIR for making an automatic solar LED lamp which can be used for illuminating your home automatically at sunset, and only in the presence … [Read more...] about PIR Solar Home Lighting Circuit
PIR Triggered Message Player Circuit
In this post we diagnose a PIR activated message player circuit, which was sent by Mr. Norman Kelley one of the dedicated followers of this blog for improvements. Let's learn more about the design … [Read more...] about PIR Triggered Message Player Circuit
Detecting Static Human with PIR
The post explains a method which can be probably used for enhancing a passive infrared sensor ability to detect even a static or stationery human presence. This feature is normally not possible with … [Read more...] about Detecting Static Human with PIR
PIR Ceiling Fan Controller Circuit
The post explains a simple automatic PIR controlled fan circuit for school college use, which responds and switches ON only in the presence of a human (students) in the classroom. The idea was … [Read more...] about PIR Ceiling Fan Controller Circuit