I am sgz
this is my solar charger that can charge your smartphone.
this solar charger have one rechargeable lit-ion battery and you can recharge that with sun or usb charger.
as you can see this is in one cassette case and it is pocket size.
ok lets make it...
Step 1: Parts That We Need
to make this charger you should get this parts:
x1 cassette case
some ice cream sticks to make skeleton of charger (you can make it however you want)
x1 5v zener diode (1N4733)
x1 rechargeable lit-ion battery with High mA ( or one phone battery)
x1 lit-ion battery charger with mini usb input
x2 3v solar panel with High mA
x1 DC-DC 2v to 5v step-up booster with usb output
Step 2: The Circuit
with this circuit you can solder parts together and put it in the case
Step 3: How to Put Parts in Case?
1. this is lit-ion battery
you can put it in here just like this
2.this is lit-ion charger that you can place that in here with hot glue
3. you can put the DC-DC booster in here
4. I put one extra female USB port in here .(I soldered it to battery)
5.this little thing is my zener diode
6.you should cut the case like this to make a way to USB and mini USB (and for switches )
7.if you want to put one extra USB port you should cut the case like this
8.with this switch you can turn DC-DC booster on or off
9.with this switch you can change charging style for solar charger (with sun or mini USB charger)
10.I put this little led that turn on when solar panel works (I solder this led to one of solar panels)
Step 4: We Are All Done!
as you can see this solar charger is very simple to make and working well
you can use this solar charger as power source too
I hope you like it
thank for reading