Our first open source Homeland Security non-lethal weapon project - The "THE BEDAZZLER: A Do-it-yourself Handheld LED-Incapacitator".
After attending a conference where the $1 million "sea-sick flashlight" (named "THE DAZZLER") was demonstrated by the US Dept. of Homeland Security, we decided to create our own version. For under $250, you can build your own dazzler and we've released the source code, schematics and PCB files to make it easy. A great Arduino project for people who really like blinking LEDs. We also added in a mode selection so you can put it into some pretty color-swirl modes, great for raves and parties!
Yes this project does indeed cause: Nausea, dizziness, headache, flashblindness, eye pain and (occasional?) vomiting! So don't use it on your friends or pets
Please note: This is not a kit, nor for sale...so don't ask us. All documentation is on the design and download pages
Older stuff, (see below) from elsewhere - the portable EMP generator made from a disposable camera, useful for frying RFID chips in, say, bills or products, or very close range meddling with other electronics.
Warning: (their certificat is self-signed so Firefox will cry bloody hell)
What is the RFID-Zapper?
The RFID-Zapper is a gadget to deactivate (i.e. destroy) passive RFID-Tags permanently.
The development-team presently consists of two people (MiniMe and Mahajivana), who had some help from a friend (thanks for that).
Goals are a proof-of-concept and the construction of at least one functioning and appealing prototype, as well as a documentation of the project so everyone can build an RFID-Zapper. Since the project found so much positive resonance, we probably are going to work on some other realizations of the concept, e.g. building an RFID-Zapper from scratch, without a single-use-camera.
The RFID-Zapper solves this dilemma. Basically it copies the microwave-oven-method, but in a much smaller scale. It generates a strong electromagnetic field with a coil, which should be placed as near to the target RFID-Tag as possible. The RFID-Tag then will receive a strong shock of energy comparable with an EMP and some part of it will blow, thus deactivating the chip forever.
To keep the costs of the RFID-Zapper as low as possible, we decided to modify the electric component of a singe-use-camera with flash, as can be found almost everywhere. The coil is made from coated copper wire and placed inside the camera exactly where the film has been. Then one end of the coil is soldered to the camera's capacitor, from which we earlier disconnected the flash. The other end of the coil is soldered to a switch, which itself is connected to the capacitor's other terminal. Once everything is tested, the camera can be closed again and henceforth will serve as a RFID-Zapper, destroying RFID-Tags with the power of ordinary batteries.
I'd like to see instructions for anti- LRAD ear protection as well as other countermeasures for such devices. Like an active noise cancellation system utilizing counter-phase speakers, that actively nullify the sound waves produced by LRAD, thereby canceling them out and producing a sphere of quiet.
A noise-cancellation speaker emits a sound wave with the same amplitude but with inverted phase (also known as antiphase) to the original sound. The waves combine to form a new wave, in a process called interference, and effectively cancel each other out - an effect which is called phase cancellation. Depending on the circumstances and the method used, the resulting soundwave may be so faint as to be inaudible to human ears.
Sonic Crowd Control Weapons at Congressional Townhall Meetings in San Diego County
LRAD Sound Cannon Used on Pittsburgh G20 Protesters
I guess military tech always finds its way home. Pittsburgh city officials believe their police department's use of a Long Range Acoustic Device (LRAD) at last week's G20 protests was "the first time the sound cannon had been used publicly."
Police used the device to emit a painful shrill that forced demonstrators to cover their ears and withdraw while police threw tear gas and stun grenades. "Other law enforcement agencies will be watching to see how it was used," Pittsburgh's police bureau chief told the NY Times. "It served its purpose well."
Whether or not you think the protesters have a right to demonstrate or are anarchists without a permit to march, it's still pretty eye-opening to see tech like that used at home.
As a non-lethal weapon, sound canons have been mounted to vehicles by the U.S Army, installed on American warships to warn incoming vessels, defended private cruise ships against Somali pirates, and were at the ready (though not used) at the 2004 Republican National Convention in New York.
But this is the first time LRAD has been used against U.S civilians. According to reports, 20 people were arrested, but there were no serious injuries. [New York Times]
Do as you're told or you get the hose!