Table of Materials:
+1x. Cheap Bedside battery powered Light
I bought this for 2$... and it comes with a nice switch =P
+1x. Female USB connector :
If you plan to charge USB stuff.. you better have a way of connecting it to your charger =]
+1x. 5v to 7v power supply :
I used an old nokia charger ( 800mA @ 5,7v ) I had lying around...
You can also DIY (see ElectricJ's great instructable ( https://www.instructables.com/member/ElectricJ/
) ) just make sure your's will be able to supply at least 520mA
+1x. "Straw hat" LED ( http://www.hebeiltd.com.cn/?p=leds.4.8mm
This is excellent for backlighting purposes , it's viewing angle is HUGE !
of course you can use whatever LED you have available =]
+1x. 10K potentiometer , two 100ohm resistors