This is a Home Made Usb charger with this device you can charge in your car any Usb charged device like mobile phones, bluetooth headsets, Gps , cameras, mp3 players, etc..
This device I made haves 0.5Amp output that is the normal power output on a computer, if you use a bigger transistor you can get more output amps.
Step 1: Parts & Tools Needed
This are the parts needed to assemble this home made USB charger:
-cigarette lighter plug
-Usb female Port (taken from a old computer Motherboard)
-5V regulator, 78M05 or 7805 (taken from broken playstation, you can take from other broken device or buy)
-resistor 100 Ohm or 220 Ohm
-Heat Shrink Tubing
-Hot Glue Gun
Step 2: Schematic
This is the schematic
The standard 7805 was to big to fit inside my cigarrete lighter plug.
So i used the 78M05 a SMD transistor because is smaller then standart 7805, and haves 0.5A that is enough for the USB charging.
Step 3: Cigarrete Lighter Plug Drill
I made this holes with the Dremel to fit the the USB female .
Step 4: Soldering Parts
In this pics I show the transistor and wire setup
Step 5: Soldering Led's
This Pics show final circuit with the Led already mounted
I Used the Heat shrink tubing to isolate some soldering points
Step 6: Fit the Circuit Inside Plug
I this part I used the Hot Glue Gun to glue the Usb Female on the back of the cigarrete lighter plug.