DIY WiFi gas detector with text alerts
https://www.electronics-lab.com/diy-wifi-gas-detector-with-text-alerts/
Stefan over at Hackster.io has written an article detailing his DIY Wi-Fi gas detector that sends SMS alerts: Hey guys, back with another little project that I’ve been fiddling with for the past week. With kids around, every parent is thinking how to make their home safer for the little ones and for everybody in […]
Passive Infrared Detector Circuit
https://www.electronics-lab.com/passive-infrared-detector-circuit/
The infrared (IR) is invisible radiant energy, electromagnetic radiation that we cannot see with our eyes, but we can sometimes feel on our skin as heat. The infrared light falls just outside the visible spectrum, beyond the edge of what we can see as red. Most of the thermal radiation emitted by objects near room […]