[Carl] recently upgraded his home with a solar panel system. This system compliments the electricity he gets from the grid by filling up a battery bank using free (as in beer) energy from the sun. The ...

[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 ...

We often think, nowadays, about monitoring the environment and air quality, but what about an especially confined version of "indoors"? Specifically, a lift. Well, here's a smart lift monitoring ...