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i want to make a notebook light, LED note book light powered through USB, anyone got any resources?
i need help, so please anyone who is experience with electronics, put some input
USB supply voltage is 5V/0.5A max.A ultrabright LED will need 4V to 4.5V and 10 to 20 mA depend of model.So you will need a resistor(25 to 50 ohms) in series with your LED.In a USB cable the red wire is + and the black wire is -.
Good luck!!!!
LED USB fan
