Assuming you mean the usb port the questions is feed what? Since you are making the bar that makes no sense. If you buy a usb bar already made that says it support usb then its going to work off usb from the wii or a computer. In your cases you are designing the bar so the wii would blow the bar just like a usb from a computer?
Maybe you mean the actual wii bar power supply I think its around 7.
The thing you are not getting is that electricity flows from source to device ( + voltage to ground ). So if your source is 5 volts and you pull 2 amps of current that is not the same is pulling 800ma of current. To adjust for the right value you dont just increase/decrease the volts you change the resistor. One more time, you need to know the forward voltage of the LED. If you are getting the leds from an existing bar that was from a usb then stay in the 5 volt range. Do the math and calculate the right resistance. Guessing like you are suggesting is only going to end up bad. If you have the money to experiment like that just buy a 10 led bar?
Maybe you mean the actual wii bar power supply I think its around 7.
The thing you are not getting is that electricity flows from source to device ( + voltage to ground ). So if your source is 5 volts and you pull 2 amps of current that is not the same is pulling 800ma of current. To adjust for the right value you dont just increase/decrease the volts you change the resistor. One more time, you need to know the forward voltage of the LED. If you are getting the leds from an existing bar that was from a usb then stay in the 5 volt range. Do the math and calculate the right resistance. Guessing like you are suggesting is only going to end up bad. If you have the money to experiment like that just buy a 10 led bar?
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