Blind Minder: Green home automation

Home thermostats usually control temperature only by turning on power-consuming furnaces or air conditioners. But there are other power-free ways to heat or cool a house: opening and closing windows, curtains, and blinds. Despite being greener and lower-cost, these methods are used less simply because they're not automated - it takes conscious effort to apply them. So, Make published a DIY project that controls mini blinds automatically based on temperature - it's simple, effective, has the potential to save money and energy. I sincerely hope that soon it'll lower the barrier even further by becoming a ready-to-install home product!
[Make via Lifehacker]

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