Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

As a perfect example, take a look at this stupendously simple Internet-connected motion detector that [Eric William] has come up with. With just a Wemos D1 Mini, a standard PIR sensor, and some ...

Last year, I took a look at some mostly low-cost passive infrared (PIR) motion sensor ... at the rear of the circuit board (see next figure). There is also a provision to add a light-dependent ...

Using motion ... the sensor triggers it will pull the output low. The Parallax model is the opposite — the output is low until it is triggered, and then the output goes high. A simple way ...

this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun. The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator ...

Here’s what to know about this simple and reasonably priced lighting solution. If you’re picturing the kind of motion sensor flood lights often installed above garage doors, replace that image ...

After I opened the door, my phone sent the near-immediate alert -- "Front yard Mailbox detected motion ... The Ring Mailbox Sensor is a simple device that works well despite its clunky setup ...