Quote:
Originally Posted by Lampshade
As for heatsinks, there's lots of choices, but generally people WAY over build heatsinks. Cree's give off a lot of heat, no doubt, but you can calculate the heat gain vs loss pretty easy to see what you actually need.(i posted links on some other recent DIY thread).
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I don't see a problem with this at all, I would rather have an overbuilt heat sink anyday than one that is a perfect match. so many people try to skimp on some things for a matter of 20 bucks, this isn't one area that should be done IMHO. for example.. if you fan dies on a exact sized heat sink and you don't know about it then you run the risk of burnning out several LEDs, if you have a over sized heat sink it reduces the chance of losing LEDs as you are not as dependent on the fan.
Quote:
Originally Posted by Lampshade
As for cheap controllers. Depends on how fancy you want to get... but look at arduino boards. There's LOTS and i mean LOTS of LED builds using these. Uses C programming, but i've found many chucks of code online that people have posted that got their LED's working and controlable. Arduino's start at $20 for something that will control 2 drivers with PWM outputs and $35 for something that'll do 6(Arduino Mega). If you get into it the arduino can do pretty much everything, i'm building a tank controller based off one right now.
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on this topic, have you seen any dimming programs for Arduino using a varable voltage output instead of PWMs?
Steve
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