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Hi, i'm making my own midi controller

Hi, i'm making my own midi controller and I want to put some led on each of the controller button. What sort and model do I have use of led and resitors?? Am pretty sure that the resistor is a 220ohm 1/4, 5% tolerance but how many volt the led must be..? verry confuse

rickharris6 years ago
The LED voltage and current is an input to the equation to calculate the resistor value.

http://led.linear1.org/1led.wiz

will work it out for you.