Fire Alarm Clock

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For the really, really, really sound sleeper (or in case you want to wake up the entire neighborhood), Alan Parekh of Hacked Gadgets Forum cobbled together this masterpiece: an alarm rigged up to a fire alarm bell!

This hack takes a standard cheap alarm clock, some interface components and a fire alarm bell to get the job done right. Normally these small alarm clocks use a piezo buzzer to attempt to wake you up. The alarm signal is hijacked from the clock circuit board and used as an input to the interface board.

Link - Thanks Alan!


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