Assembled version ^4 of this board, it changed the battery from 6V to 12V, and adds pluggable connectors. There are six digital inputs, a flow sensor input and two analog inputs for 4-20mA type sensors. These all need evaluation but I got to say I am itching to see if it will provide enough power for a Raspeary Pi Zero setup I am working on. In this image, I have added a copper wire to wick some heat from the solar charge controller.
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Clever use of copper wire as DIY heatstink!
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