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1  Using Arduino / General Electronics / Re: Want to control 12v LED strip via arduino PWM pin on: March 20, 2011, 07:08:20 pm
Awesome.  Just ordered the breakout and a few extra. 

At what point should they run with a heat sink?
2  Using Arduino / General Electronics / Re: Want to control 12v LED strip via arduino PWM pin on: March 20, 2011, 05:08:11 pm
I'll check it out.  I've never used a MOSFET.  It will pass the PWM signal?
3  Using Arduino / General Electronics / Re: Want to control 12v LED strip via arduino PWM pin on: March 20, 2011, 08:28:22 am
I'd love to use the 2003, but it max's out at 500mA and this will pull something like 12A.  I haven't been able to find any array's that can handle more than the 2003.  Some other sites recommended stacking them, but I'd need to stack 24 of them...   something tells me that's not the optimum setup.

I've seen a bunch of systems that can handle the amperage, but don't handle the PWM control.

I found a commercial one for $23.  I may suck it up and grab it... open it up and see how they do it.
4  Using Arduino / General Electronics / Want to control 12v LED strip via arduino PWM pin on: March 19, 2011, 03:06:39 pm
I have a 16 foot RGB LED strip.  It runs at 12 volts at 14.4 w/m.  I think I understand it needs 144watt power supply at 12v to light them (coming from China, so don't have them in hand yet).  My question is, I'd like to hang these under my RV and have an Arduino do a slow fade through the color spectrum.  The code is easy... coupling the Arduino to a 12v high draw system... well that's why I'm posting.

I've thought about using an optoisolator so the Arduino can pass the PWM signal and 12v on the other side can run the lights...  I just haven't found a chip with 3-4 channels that can drive these LED strips.

I think I've seen an off the shelf item that does this, but they're 23 bucks each.

Ideas?
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