the sensor sees a changing IR value that produces a varying output signal from the sensor indicating motion. The comparator looks for and responds to this changing signal. Hot items that don’t ...

is launching a novel human-presence and -motion detector to enhance security systems, home-automation equipment, and IoT devices that typically use passive infrared (PIR) sensing. The STHS34PF80 ...

[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion sensors. Most often seen in security floodlights and automatic doors, in creative hands these ...

Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.

I find that I get a reliable detection radius at about 5 meters away, which I think is perfectly fine for most home needs and comparable to other Infrared motion sensors I’ve tested. The big win ...

In the 1980s, advancements in technology brought us the infrared motion sensor. Active infrared sensors work by emitting infrared radiation, detecting differences in temperature between an object ...

You can also adjust the sensor’s sensitivity and range in the Alexa app. Separate infrared motion sensors such as these can be set up to do the same thing, but if you have a compatible Echo ...

There are many different sensors that can be used to detect motion in a given environment. Passive InfraRed (PIR) sensors are the most used today, as they work by detecting moving heat signatures.

Researchers at Northeastern University have developed a next generation smart sensor for the Defense Advanced Research Projects Agency (DARPA) that is capable of identifying infrared (IR) ...