The Planted Tank Forum - View Single Post - Affordable CO2 sensor?
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post #92 of (permalink) Old 12-15-2012, 03:08 AM Thread Starter
mistergreen
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Join Date: Dec 2006
Location: Cincinnati
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Oh, if you're interested how the relay is connected to arduino, check out here
http://aquatictechtank.net/viewtopic...8&start=10#p19

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