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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Solder the Red wire to the other side of the diode.
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Cute excess Diode leg lengths.
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Twist the Red Solar Cell wire together with the Red wire from the Battery holder.
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Solder the Red wires to the Positive terminal on the USB Circuit.
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Solder the loose Black wire to the Negative side of the Solar Cell.
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Twist the Black Solar Cell wire together with the Black wire from the Battery Holder.
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Solder the Black wires to the Negative terminal on the USB Circuit.
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Move the white switch back towards the Negative terminal. (That sets the USB circuit to the "on" position.)
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Clip the red and white LEDs off the USB Circuit. They're not used in this project.
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The rechargeable AAs may be dead, charge them up quickly with a wall AA charger.
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In a pinch, use regular AAs for a quick test. NEVER try and solar charge regular AAs.
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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 $1 Store plastic food container or cheap wooden box is always a good solution.
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Attached Documents
