Luckily, as [Xavier Decuyper] explains, you can build a very robust DIY energy monitoring system without having to modify your AC wiring. In the video after the break, [Xavier] goes over the ...

If, like [Giovanni], you want to keep better track of your usage, you might find value in his DIY energy meter build. [Giovanni] built his energy meter to monitor energy usage in his whole home.

If you need more convincing, you can find dozens of DIY energy-monitor installations on YouTube—it looks pretty advanced. Over time, the Sense monitor uses the unique electrical signatures of ...