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tilt sensor controlled by wireless remote Answered

hi: I would love to make a tilt sensor that can be placed inside something of value (since I'm a musician this happens to be a guitar case:), so that if someone picks up the guitar case, it would activate a loud alarm. It's easy enough to come up with a design for a tilt switch (maybe a ball bearing inside a tube), but it would be really nice if I could arm the circuit with a wireless remote. Any suggestions? thanks

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Sandisk1duo (author)2009-01-24

mercury switch is the way to go just arm it by a hidden switch

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mimmo (author)Sandisk1duo2009-01-25

thanks I aqctually have tried the mercury switch before, works great, but I'm going to try and activate the circuit with a wireless, because having to use a mechanical switch it's tough to get to it without setting off the alarm

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Sandisk1duo (author)mimmo2009-01-25

use the mercury sitch like a tilt switch, so if someone tils your case more then say 20o then it would go off. but it wouldn't go off if someone were to lightly tap the case

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mimmo (author)2009-01-24

thanks for the suggestions not a problem mounting the alarm permanently in the case, I'm fairly new to electronic hacking, is there a diagram or circuit on the web that anyone knows about?

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11010010110 (author)mimmo2009-01-24

design the tilt switch and find a suitable wireless module then itll be the time to design the rest

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gmoon (author)2009-01-24

A wireless controller sounds cool (I've done some work with wireless modules, they are cheap!), but might I suggest something simpler: a magnetic reed switch.Turn the alarm on/off with an external magnet (there would still be a master on/off inside.) There's one pretty big downside--you'd probably have to mount the switch and alarm permanently in the case, so it couldn't be moved easily to a different case...

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11010010110 (author)2009-01-24

design the project in 3 parts tilt sensor remore and receiver - nearly any toy with remote control can be hacked to work here if the remote functionality is ok circuit that switches on / off the alarm and is controlled by the remote - not hard to build

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