DIY Fire Alarm Clock - loud, loud, and red, red..
Written by admin on January 16th, 2008 in devices and gadgets.
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.
Tags: computers, camera, consumer electronics, mobile phone
