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This will require a circuit referred to as a monostable multivibrator (half a dozen small electronic components).goes on for like 10 seconds and resets it self until it is picked up again
Generally a siren will require more power (bigger battery) than an electronic buzzer.siren instead of a buzzer
Do you have one in mind, or is this just a "black box" concept at this point?motion detector
There ya go.Ya i thought of using a monostable with NE555 chips..
No...unless you want your siren to pulse on and off.then i will need a NE555 astable right?
9V batteries will supply almost no power for a siren. You need to pick your siren first...then determine what batteries will work.12V siren with two 9V batteries and a 12V voltage regulator?
There are tilt switches (old ones filled with mercury...new ones with a steel ball). You could make your own.is there some sort of switch that reacts to vibrations or something?
T-bro,When the box is lifted, the paper falls away and the alarm cannot be turned off.