First Post!

Cool, but I just had to repair my alarm clock because shit came loose since I pound the snooze button hard enough already. It seems that this mod would be fun until you destroyed the entire clock in a short period of time.

Posted at 12:21 am on Aug 25th, 2007 by JoeShlub

I got a kick out of the videos of the mod in action.

Posted at 12:28 am on Aug 25th, 2007 by n3rd

or you could just wire in a mercury switch / tilt switch. would work just fine for this application and would save the time building the “supporting circuitry”. also the cost would be substantially less.

Posted at 1:16 am on Aug 25th, 2007 by richtastic

Regarding the problem of turning off your alarm clock in the morning–
Solution 1: Install an accelerometer.
Solution 2: Use a bigger mallet.

Posted at 1:26 am on Aug 25th, 2007 by sackofcatfood

Most of my wrecking crew at my martial arts school would destroy that thing with their first blow. Cool hack if it can sustain brutal beatings.

Posted at 3:02 am on Aug 25th, 2007 by poisonfist

If I am forced up by an alarm clock, I am extremely tired still. I won’t have the ability to aim my fist as I punch for the alarm clock. Most likely I’ll be punching my desk, or nightstand.

I can’t afford broken fingers…

Posted at 3:10 am on Aug 25th, 2007 by Tony

Richtastic: yeah.. much more simple/cheap solution. Ya know, it might also be interesting to use a dual point mercury switch.. and a circuit to check for oscillation.. you have to shake the ever living f*&k out of it to get it to turn off!!! could easilly do that with an accelo too… but it just seems a bit over the top for an alarm clock. I guess im just still used to the idea that accelos should be expensive heh.

Posted at 3:13 am on Aug 25th, 2007 by MRE

i’ll clarify what i meant.
take a $2 tilt switch from mouser.com and solder it to the same points the snooze button is soldered to.
hot glue the switch inside the case at just enough of an angle to not close the circuit. (use a battery and a led to get the angle right if you need to)
set the alarm and when it goes off a slight nudge should be enough to trip the switch, snooze’ing the alarm.

that will accomplish the same thing as this hack, shutting off the alarm by movement.

Posted at 4:18 am on Aug 25th, 2007 by richtastic

Regarding the durability question, you can set the level that it will take to trigger, so that a mere flick will turn it off. You don’t even need to hit the clock itself. Also, from the article: “The DE-ACCM is a good choice for this project because other vibration sensors such as mercury switches or reed switches only provide open or closed switch outputs, whereas the DE-ACCM provides a continuous analog voltage directly proportional to the intensity of the vibrations.”

Posted at 7:59 am on Aug 25th, 2007 by Vladsinger

Awesome project!

I hope the clock survives.

Posted at 9:01 am on Aug 25th, 2007 by strider_mt2k

This Was already posted in April ‘05 by vince:
http://www.hackaday.com/2005/04/30/the-punchable-alarm-clock/

Still a good project, though.

Posted at 10:36 am on Aug 25th, 2007 by kersny

Pretty neat, but for the price of one of those accelerometers, you could just buy a dozen or more regular alarm clocks and a good heavy mallet.

Posted at 11:10 am on Aug 25th, 2007 by Wolf

instead of a hg switch one could simply use a scheme found in many toys that employs a spring (could come from a cheap ballpoint pen or something) with a stripped wire inside.

Posted at 10:32 am on Aug 26th, 2007 by ret

if i do this then i ll never wake up.:P

Posted at 2:53 pm on Aug 27th, 2007 by dillinjaxx