It features a photoelectric sensor, making it a smart choice for placement near a kitchen, as ionization smoke detectors are more apt to go off if you burn a piece of toast. This smoke alarm has a ...

Last year, we brought you a story about the BhangmeterV2, an internet-of-things nuclear war monitor. With a cold-war-era ...

In this video I've created a device that can notify in real time about events that happen on a website. The project uses NodeMCU board and a buzzer to produce sound as alert. The board is programmed ...