Cool project from George Kartsonas up on Hackster.io.

My project has to do with the solar heated shower boiler that most Mediterranean and sun bathed countries use. The concept is simple, there’s a solar panel with a water tank on top and when the sun is out and about, the water heats up all the time. Now, what happens when it’s a rainy or cloudy day, the only choice you have is to turn the heat on the boiler manually. The picture below clearly depicts an electrical water boiler typically found in North American and European homes.

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