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#15301 Temperature sensing fan control for an enclosed media cabinet

Posted by unt1tled on 10 July 2011 - 05:27 PM in General Discussion

Excited newb here. I'm working on ventilating my media cabinet with some netduino magic and a couple of laptop coolers.

I have two Rosewill Notebook Coolers that I'll be building into the base of the cabinet. They're each rated 5V, 0.25A.

Now I did manage to get the temperature sensor wired and working (awesome!), but I'm not quite sure where to begin with wiring up the fans.

  • I'm guessing it's not a good idea to connect them both to the netduino's 5v pins because it's above the its current threshold?
  • If so, do I rather need to wire them up to a relay somehow? (Will this one do?)
  • If I use the relay, is a separate power source necessary, or can it share with the netduino? I was planning on using a FlipIT as a 5v power source.
  • Is there anything guide or anything else I need? I've read a guide on relays, but wasn't sure if that was superfluous to what I'm doing.
Any help will be appreciated!


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