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post #570 of Old 04-16-2013
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Re: Low buck projects- Let's see 'em!

Recently connected my bilge pump alarm to 12v relay, so when the bilge pump (float switch) turns on, the external sensor on my webcam triggers.

Now I get an email whenever the bilge pump turns on. I get an email like this one:

Some short wires and crimped connectors <$10
12v relay from Radio Shack <$10
Total cost: less than $20

(I already have the webcam sending me pictures when it detects motion on the boat. They go for about $50. And it takes about 1.5 amps to drive it and the long range WiFi setup.)

I have a separate, different relay to use when I care more about staying connected to shore power, like in a slip in winter time.


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