In this Instructable, ill show you how to make yourself an cheap usb car lighter .

Step 1: Materials

MATERIAL NEED :

1) Solder Iron with iron

2) Screwdriver (+)

3) Integrated circuit LM7805cv

4) USB female socket

5) LED (any color)

6) 2.7k Ohm Resistance (or higher)

7) Cigarette lighter Adapter PLUG

Step 2: MAKING

Follow The 2 schemes for make the adapter.

LM7805 pin :

1 : IS THE INPUT (12V) FROM THE BATTERY CAR. !! PAY ATTENTION DO NOT MAKE SHORT CIRCUIT !!.

2 : IS GROUND FOR ALL !

3 : IS THE OUTPUT (5v) ,PLUG THE USB SOCKET AND LED <- with resistance first.

LM7805 DATASHEET :

THESE ARE THE RESULTS .

In the image the central pin of LM7805 is detached for dont do short circuit !