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    The parts needed to build a solar powered light?

    I came across a number of designs such this but will the same equipment work with my numbers? I'd also like to know about the type of controller I would need for my project I've noticed that a lot of the time voltages aren't same everywhere (i.e a 6V panel, 4V battery and 3V led) doesn't...
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    The parts needed to build a solar powered light?

    Hello everyone, I'm trying to build a solar powered led (2nd part would be to add a USB port) and I'd like to know all the parts I need to get it working nicely. Apart from the obvious things like an led, battery, on/off switch, wires and solar panel will I need some sort of controller for...
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