Introduction
Note: This kit has been replaced with a newer version. Check out the Solar USB Charger 2.0 Kit.
Build a basic Solar USB charger in 15-25 minutes with this simple soldering kit.
The printable PDF has updated directions to reflect the new USB circuit that we're using.
Featured Document
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Strip the ends of all wires, including the Battery Holder.
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Solder the Diode to the (+) Positive solder point on the Solar Cell.
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Note: The Diode has a black bar on it. That side is soldered to the Red wire and the non black bar side is soldered to the Solar Cell.
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Twist one end of your Red wire around the other side of the Diode. Solder into place.
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Snip off excess parts of the Diode legs.
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Twist the Red wire from the Solar Cell together with the Red wire from the Battery Holder.
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Solder the Red wire coming off the switch to the (+) Positive terminal on the USB Circuit.
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Solder your Black wire to the (-) Negative side of the Solar Cell.
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Twist the Black wire from the Solar Cell together with the Black Wire from the Battery Holder.
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Solder the two Black wires to the (-) Negative terminal on the USB Circuit.
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The rechargeable AA Batteries used in the kit may be dead, charge them up quickly with a wall AA charger.
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In a pinch, use regular AA Batteries for a quick test. NEVER try to charge regular AA Batteries.
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Check out the diagrams in this step if you're worried you missed something.
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When in doubt, try a different USB device.
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While an Altoids tin works well, it is metal and conductive.
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Using a Dollar Store plastic food container or cheap wooden box is always a good solution.
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Attached Documents
