All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Learn more.

[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino ...

Here is a useful circuit for Arduino lovers and experimenters. It is a simple digital voltmeter, which can safely measure input dc voltages in 0 to 30V range. The Arduino board can be powered from a ...

For years, the humble Arduino microcontroller—a cheap, open source, midnight-blue circuit board emblazoned with a tiny white infinity loop—has been a favorite tool of the DIY electronics crowd.

Most of the technology world is familiar with open source software and the reasons why, in some eyes, it's more appealing than proprietary software. When software's source code is available for anyone ...

Imagine having your own personal bartender ever-present in your home just waiting to be given the instruction to produce a cocktail of your choosing. While employing a dedicated bartender to be on ...

The creative adventures with ATtiny series microcontroller are awesome if you know how to play them. ATtinys — especially the ATtiny85s — are all around us, and by using one, we can shrink the size of ...