This project is of course, derived from the work that Limor Fried did in her MintyBoost Altoids charger, and from several other instructables, including this project from Joshua Zimmerman. The main differences for this project are cost, and durability. I found that his embedded iPhone charging cable was particularly fragile, with the wires exposed. These issues should be addressed in this instructable.
Here are the components you will need:
- $4.00 - Emergency iPhone charger - via Amazon
- $2.00 - AA battery holder - via RadioShack
- $3.99 - Solar Cell. I used this cell, from Brown Dog Gadgets, but you may be able to find them cheaper.
- Solar Batteries (AA)
- Wire, solder, soldering iron
- Altoids Tin
- Double stick tape
- Electrical tape
Step 1: Disassemble Emergency Charger
Step 2: Solder Some Wire Onto the Solar Cell
Step 3: Connect the Wire to the Battery Pack
Step 4: Ready the Container
The other hole is only necessary if the solar cell is to be mounted on the top or bottom of the tin. If this is the case, you should create a hole large enough to fit your wire through comfortably. Again, a drill and tin snips work well for this job.
Step 5: Assemble the Final Components
With the components mounted, the last wiring that needs to be completed is to attach the solar cell and battery pack onto the USB circuit. The clamps in back of the USB circuit are where you want to do this. Look on the circuit itself for a + icon next to one of the clamps. This is the one to attach the red wires to. The - clamp is for the black wires. I like to add a glob of solder onto the clamped wires to help them stay in place.