Anyone here know how to power, say, 4-6 leds off of a usb interface? I am modding my laptop, and i want to light up the back of the screen (plexiglass back) with leds that I can just unplug when i want to shut them off.
Usb provides 5v at 500ma, this is perfect to drive your LED's just use the proper resistor and your set.
Use this and enter 5 volts as supply voltage. http://www.metku.net/index.html?path=mods/ledcalc/index_eng#guru