Have you haver need energy for charging your mp3, cellphone, etc. when you're out of home?!
I had.. So i decide to describe how to build your portable charger.
I hope to be useful.
SORRY FOR MY ENGLISH, I'M ITALIAN!
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Signing UpStep 1: What you need
- 5v regulator (i used a 7805)
- Small piece of velcro
- USB female port
- 9v battery
- 9v battery attach
- A box (i used an old burned modem)
- Hot glue (optionally)
- A solder






































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i even did a wall charger, and WILL DO a car charger too! :)
have fun! :o)
thank you!
marC:)