DIY Kyoto's Wattson employs a canny way of making electricity usage come to life -- it glows a dull blue when you're not using much, and lights up as a fiery red when using lotsa watts
DIY Kyoto's Wattson employs a canny way of making electricity usage come to life -- it glows a dull blue when you're not using much, and lights up as a fiery red when using lotsa watts
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