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DIY solar hot water controller


the solar hot water system you can see on this blog has cost approximately £200 all in. In particular the flat plate collector was made out of mostly recycled materials! Here in the UK people regularly pay anywhere in the region of £6000 - £8000 for a system which we regard as inferior. And what's more it has a horrific amout of embodied carbon due to shipping from China. So have a go yourself and we hope this blog will assist you in your system design and construction..
below you'll find the blog area which we're updating constantly with new info regarding the controller...coming soon...a dedicated PCB!!!


controller...

and so to the controller…here’s the parallax propeller microcontroller demo board with an ADC chip (analog to digital converter) in test mode on the breadboard.  To start with the controller needed an ADC as we used analog temperature sensors but we switched to digita sensors  as they don’t need extra components and are more or less ‘plug-and-play’ with the Propeller thanks to the ready-made software object…

DSC04206a

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