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

Take apart the Clock, see how it works

Taking the clock apart was very simple, a few screws allowed the plastic outer shell to be removed. The actual clock module us held together with some plastic clips. A small flat blade screwdriver makes quick work of them. Be careful when opening the clock module though since the top plastic is used as pivot points for many of the gears that will want to fall out as soon as it is opened and tilted. .

I am not very impressed with the solder job, the oscillator is in desperate need of a bit more solder.

The alarm function is activated mechanically by the clock and closes a physical switch. In the below picture have a look at the contact (it is open in the picture) just above the small green circuit board. When this closes the top negative pole is transfered to the tiny controller via the bottom pad.

The On Off switch is mechanical and slides up and down.

Funny how letter O, upside down it looks like a C. I wonder if they ran out of the correct letter and the C looked close enough…

When the alarm switch is activated this physical tab wedges itself into the alarm contact preventing it from activating.

Closer look at the alarm contact.

The black blob on the circuit board covers the clock controller.

Measuring from the top of the alarm switch to the positive of the battery.

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Below reviews, comments by and a of 7 cialis . May 2014 of dysfunction its sold men a...


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67 Responses to “Fire Alarm Bell Alarm Clock – Worlds loudest alarm clock?”

  1. Shoot your Alarm Clock with Gun O’Clock | TechTuneZ Says:

    […] these cool clocks, although I haven’t purchased or built any of them. Well other than the Fire Alarm Bell Clock but that was just crazy and not […]

  2. Abadss.com AWESOME GIVEAWAY! - Page 20 - ABA DSS - Free to Air Satellite TV Community Says:

    […] 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. __________________ Please click on the pic […]

  3. Online Clock Says:

    We respectfully believe that our alarm clock is louder, when you hook your computer up to your stereo speakers and then blast the volume all the way up. Anyone care to perform a comparison test?

  4. And A Pleasant Good Morning to You, Too! : Clarke’s Gifts Galore Says:

    […] comes a time in a busy individual’s life when screaming banshees, exploding bombs, fire alarms, math machines, and coin-hungry gadgets, in addition to nagging roommates, which double as travel […]

  5. Learning Gone Wild: 100 Most Hilarious (But Informative) DIY Guides on the Web - Learn-gasm Says:

    […] Fire Alarm Bell Alarm Clock: Make an alarm clock that’s sure to get you up with the help of this guide. […]

  6. Name the Thing Contest - 80 - Hacked Gadgets - DIY Tech Blog Says:

    […] The item to guess was a Fire Alarm Clock […]

  7. Pneumatic Bed Shaking Alarm Clock - Hacked Gadgets - DIY Tech Blog Says:

    […] is a bed shaking alarm clock on steroids! This is even more jolting than my Fire Alarm Bell Alarm Clock! It uses two sources of air, a huge air compressor under the basement stairs and air from the car […]

  8. Pneumatic Bed Shaking Alarm Clock | Gizmo Addiction Says:

    […] is a bed shaking alarm clock on steroids! that is even more jolting than my Fire Alarm Bell Alarm Clock! It uses two sources of air, a huge air compressor under the basement stairs and air from the car […]

  9. DIY Gentle Wake Up Alarm Clock - Hacked Gadgets - DIY Tech Blog Says:

    […] for you. On the other hand if you can sleep through a thunderstorm then you may want to look into a real loud alarm clock […]

  10. sonic boom alarm Says:

    This looks pretty powerful, but I still would only trust a sonic boom alarm clock. Seriously… I used to set a minimum of three alarm clocks in my bedroom each night just hoping one would wake me up in the morning and even with this I would still usually be late to work. However, once I bought the sonic boom alarm clock I have not been late to work again. I love this alarm clock and it is the only one I will trust to wake me in the morning.

  11. » Hacked Fire Alarm Clock : @methodshop Says:

    […] Continue Reading>>> D-Day graphics design » […]

  12. trafegodigital Says:

    very nice alarm

  13. Wake Up! 28 Alarm Clocks That Make Snooze Fun | WebUrbanist Says:

    […] (Images via coolbuzz, bedzine, productwiki, hackedgadgets) […]

  14. farhan Says:

    gud thing bt we can emplify it more.

  15. DIY Time Lapse Camera Systems - Hacked Gadgets - DIY Tech Blog Says:

    […] Check out this creative DIY Quartz camera trigger. It uses the guts from a cheap clock similar to the one hacked in the Fire Alarm Bell Clock project. […]

  16. DIY Fire Bell Alarm Clock - hack247 Says:

    […] check out hackedgadgets for the full article with loads of construction pictures and detailed […]

  17. Car Horn Alarm Clock - Hacked Gadgets – DIY Tech Blog Says:

    […] Car Horn Alarm Clock is sure to wake you up in the morning. Not sure if the volume would beat my Fire Alarm Bell Alarm Clock but either is sure to get the job done. The clock in this hack has a nice small motor that is […]

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