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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
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9 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.