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DIY Fire Alarm Clock – loud, loud, and red, red..



diyfirealarmclock small DIY Fire Alarm Clock   loud, loud, and red, red..

This DIY Fire Alarm Clock may be overkill, but hey, maybe you’re a little deaf? Eh? What’s that you say?

 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.


 DIY Fire Alarm Clock   loud, loud, and red, red..

About the Author:

Red – who has written posts on The Red Ferret Journal.


  • http://www.atomicclocks.com AtomicClock Guru

    Great idea, for a PRANK to your roomate even.

    I’ve seen this done in the past with other clocks, including an Atomic Clock

    http://www.atomicclocks.com for some examples

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