That said, I'm pretty sure that this will work, but I recommend waiting for me to try it first. Depending on which solar panel you use, it could take up to 24 hours to charge with direct sunlight, so this probably isn't the best option to charge, but I'm going camping soon, so I'll be using it a lot then.
Original concept and idea from: http://www.instructables.com/id/Make_a_ ... to_Rechar/ . I have just modified it to work with the dingoo. I know that there is a newer instructable on a solar powered ds, but it requires soldering to the battery, which I didn't want to have possible newbies trying on their brand new Dingoo(no offense meant by that).
Materials: Two solar panel options depending on whether or not you care about a little solar panel hanging over the side:
Panel option 1(about 1mm overhang on each side(left and right, not top and bottom)):
1 x http://www.dealextreme.com/details.dx/sku.17441
Panel option 2(no overhang, slower charging and requires 5V regulator, probably much slower charging):
1 x http://www.dealextreme.com/details.dx/sku.12988
1 x 5v regulator (available here or here(cheaper))
For both options:
1 x diode (any should work)(available here or here(cheaper, buy 1 pack of 20)
some wire, thinner the better
some scotch tape(not necessary, but makes it look nice)
some heat shrink tubing(not necessary, but makes it all look pretty)
something that has a mini-USB type B cable(the same one Dingoo uses to charge)(I'm using this, and it comes with an extra wall adapter too
)Tools:
soldering iron
multimeter(not necessary, but helps A LOT)
wire stripper/cutter
hot glue gun with glue(not necessary, but can make it look nice)
Steps(untested as of writing, might not work too well):
1. Solder the diode to the + side of the solar panel so that the white line on the diode is facing away from where you solder it. Glue the diode to the panel(if you want).
2. Solder a wire to the end of the diode and another to the - side of the solar panel.
3. If you have a multimeter, now is a good time to check to make sure everything works, and that you can get a good charge in the sun. You can also see how many milliamps you get, do some math, and figure out about how long it will take to charge(should be about 7 times longer with solar panel option #1), normal charge has about 700mA current.
4. Cut off the part of the cable that has the mini-USB end(the closer to the end the better, but not too close). Solder the + wire from the solar panel to the red wire of the USB, and the - wire of the solar panel to the black wire of the USB. Put some heat shrink on the whole thing to make it look nice.
5. If you want, attach the solar panel to the Dingoo using glue, tape(not too good), or something similar(I'll be using Velcro tape, so I can remove it and put a stand on the back when I want).
6. YOUR DONE!!! Now when you go outside, just hook up your solar panel(plug it in), and you should start charging(depending on sunlight). if you want to connect to your computer, or wall adapter, just unhook your solar panel, take it off(if possible), and plug in the computer cable.
AGAIN, I have NOT tried this yet, and I give no guarantee that it will even remotely work.
If you like the tutorial, please post here, also if you decide to try it out, post your pics, videos, etc. here.
