USING HOMEBREW COILS TO MEASURE MAINS CURRENT, AND TAKING THE CIRCUIT BREAKER CHALLENGE
Like many hackers, [Matthias Wandel] has a penchant for measuring the world around him, and quantifying the goings-on in his home is a bit of a hobby. And so when it came time to sense the current flowing in the wires of his house, he did what any of us would do: he built his own …
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