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Unread 07-07-2012, 23:26
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Re: Turning LEDs on/off

Quote:
Originally Posted by Ether View Post
Why did you select 82 ohm?


I used the calculator linked below to determine the resistor. Forward current was 20mA, source voltage was 5v and the forward voltage was taken from the LED specs.

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

When I switched to the signal tonight, there was no light when I set the DIO to true or false. When the LED is on power and ground, it comes on
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Last edited by rsisk : 07-07-2012 at 23:28.