Before the Raspberry Pi came out, one cheap and easy way to get GPIO on a computer with a real operating system was to manipulate the pins on an old parallel port, then most commonly used for printers ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

So you want to control some mains electrical (or lower voltage) item using your phone, perhaps? This single ESP8266 plug-in controls a relay that is built in to the module. An Android app (.apk) ...

Abstract: This paper deals with a cooperation communication problem (relay selection and power control) for mobile underwater acoustic communication networks. To achieve satisfactory transmission ...

Ever bought a cute little USB relay card and wanted to use it on a Linux based device or computer? Chances are that your were out of luck because the Linux software support for the card provided by ...

Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...

Feeling thirsty and needing to pee a lot more can be signs of type 2 diabetes. If you're losing weight without trying, it could be a symptom of diabetes. Extreme hunger and other type 2 diabetes ...

2-month vaccines help protect your baby from diseases like polio and hepatitis B. Most vaccinations are given as a shot, but the rotavirus vaccine is given by mouth through liquid drops. The Hib ...