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How can I create a manually controlled rgb led controller? Answered

I have a 4 lead common cathode led.  Would it be as simple as building an led driver circuit and placing a potentiometer between supply and each anode?

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steveastrouk

8 years ago

No, if the LED takes substantial current you need a circuit like this one, per channel

trimmable current source.JPG
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wkter

8 years ago

Yes, it should be that simple.