This tiny, inexpensive microcontroller makes it easy to build reliable, room-by-room Home Assistant sensors without paying the smart home tax.

The hardware setup shown below includes the Arduino Uno R4, a DHT11 sensor, and the built-in Wi-Fi for email alerts. The DHT11 is connected with VCC to 5V, GND to ground, and the data pin to Digital ...

Raspberry Pi under-cabinet clock shows time and weather; free 3D-print files and a no-API-key weather service, built for glance viewing.

The Raspberry Pi has brought digital camera experimentation within the reach of everybody, with its combination of an accessible computing platform and some almost-decent camera sensors. If ...

A handful of commands can go a very long way.

Tired of paying for pricey VPNs? With a Raspberry Pi and a bit of know-how, you can host your own VPN for free. I’ll show you exactly how to do it. I’ve been writing about technology since 2012, ...

Chemists in South Korea have created a stable color-changing sensor that displays an easily quantifiable response to the pH of its surroundings. Published in Microsystems & Nanoengineering, Dong-Hwan ...

TempGenius has announced continued enhancements to its environmental monitoring platform, reinforcing its position as a trusted provider of wireless temperature logging and Wi-Fi humidity monitoring ...

Abstract: A surface plasmon resonance (SPR) sensor based on a polyvinyl alcohol-graphene oxide (PVA-GO) composite film and a polydimethylsiloxane (PDMS) film was proposed for simultaneous measurement ...

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