DIY RGB Demon Eyes

[WOLFN8TR]

Interesting. Thats a choice too. But unlike angel eyes, I dont think Ill want to dim these at night. Just trying to get the maximum safely from these. Theyre in a great position but right now its only visible at night in darkness.

Wouldn't using a dimmer just change the color of these LED's?

The resistor I assume is the cheapest route thou.

[CarbonZHP]

LEDS are 4 pin, common annode. So one power wire. 3 grounds. Which ones you ground activates each color.

[WOLFN8TR]

LEDS are 4 pin, common annode. So one power wire. 3 grounds. Which ones you ground activates each color.

So the resistors are in the ground then, correct?

[CarbonZHP]

Correct.

[WOLFN8TR]

Interesting.

Cool Project, I like it.

[CarbonZHP]

Thank you. I'll get more comprehensive when it's finished to my liking. Just looking for someone to back up my schematics and resistors

[Oli77]

With V=IR, your bottom schematic, I am getting 80mA split on 2 wires so 40mA for each of the blue and green, isn't that too much?

[CarbonZHP]

Yeah thats too much. Max is 30 so I was aiming near 25 to be safe. I calculated those resistors with a Multi Led Circuit calculator. Guess either me or me were wrong

http://ledcalc.com/

[CarbonZHP]

I calculated that from a 12V source, wanting 4.5v and splitting ~55mA, a 150ohm should be used. Correct?

[Oli77]

That website calculates with the LEDs in series. Your bottom drawing is a parallel design.

Edit: I see now the website's parallel page. I guess you are right. Not used to this forward voltage stuff.