Hacked Gadgets Forum

January 11, 2008

Fire Alarm Bell Alarm Clock – Worlds loudest alarm clock?

at 5:12 pm. Filed under Computer Hacks, Crazy Hacks, DIY Hacks, Electronic Hacks, Funny Hacks, Insane Equipment, What Were They Thinking

Parts needed and Interface Board Schematic

Here is a list of the parts you need for this hack:

Cheap Alarm Clock Fire Alarm Bell

PNP Transistor

4.7K ohm resistor

360 ohm resistor (optional)

Blue LED (optional)

Perf Board

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