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DIY Solar USB Charger - Altoids

Step 8Solder The Charger

Solder The Charger

Now all you have to do is solder that bundle of positive, in my project red, wires to the positive point on the board. Then all the negative, in this project black, wires to the negative point on the board.

You're done with the circuit. You can test it now.

Usually I can charge a gadget just from sun. If it's not sunny the circuit should charge via batteries.

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JoshuaZimmerman (BrownDogGadgets)

I'm a middle school science teacher in Milwaukee, Wisconsin. I like making random things and then teaching my students how to do the same. I also run a little website where I sell some of the things...