As you can see, the clock has four wires. Only one of them stops the countdown when cut. The other two are decoys and do nothing while one wire will immediately “detonate” the alarm. Obviously the thrill will wear off if the wires had fixed purposes, which is why Krumpus made it so the the role of each wire is randomized each time the sequence is activated.

By the way the countdown sequence isn’t just for the alarm. It can also be activated at any time by pressing the big red button, perfect for Counter-Strike LARPing. Here’s the clock in action:

Click to View Embedded Video Clip

Yes, you’ll have to replace any wires you cut, but Krumpus says that replacing them will be easy because they’re attached with screw terminals. Krumpus also made a mock C4 version of the clock, just for kicks:

The “bomb” is powered by an ATMega328 microcontroller with an Arduino bootloader. If you didn’t understand a word from that previous sentence either, fret not! Krumpus will be selling a kit this fall so you can have your own Defusable Clock. The kit will only include the electronics, but I’m sure you can cobble together a bomb-looking device. The kit will also be “fully hackable” so Arduino nuts and tinkerers will get more than their money’s worth with this thing.

[Project Lab via Laughing Squid]

The guys at Russian design shop Mystake have created these candles that look just like bombs and dynamite sticks. They’re called “notmy” candles, as in “Officer, those are NOT MY explosives sitting on the table.” But unlike the real deal, these ones are guaranteed NOT to explode. At least I hope so.

You can grab the notmy bomb candle for $4.90 (USD), the dynamite for $6.90, or the “ammunition pack” that includes both for $10.90 over at the Mystake Shop. Of course, if you happen to be friends with any ATF agents, you might want to skip putting them out when they swing by the house.