Cell phone taser


I’m not going to reccomend it, but [cameron] modded his Sony Ericsson k800i to tase people as well as take pictures. Apparently, the k800i has a xenon flash – meaning that it’s got a high voltage potential available to drive the flash. He added a pair of 16uf caps and scored a good 300 volts to share with the unlucky.

27 thoughts on “Cell phone taser

  1. I sorry, I just have to do this. anyone who has read digg the last few weeks will understand the joke.

    “Dont taze me, Bro!”

    (Woot, first post, havent had that in a while :3)

  2. I must admit this is not anything special.
    Turning disposable cameras into tasers has been going around for months… this is the exact same thing, except with a cell phone…

    Also, whats the point of a taser if you have to go right up to the person and touch them… You’d be pushing the phone on their skin trying to get a good connection, and they’d knock you out before you managed. You need range on a taser…

  3. Go the Jaycar DMM! If this guy is aussie then good on him. We hardly see weapon related hacks over here, besides the odd potato cannon that is.

  4. TASER is a brand name, and does, indeed, refer to the device that fires the electrodes. I agree that the device known as a stun gun shouldn’t be, as it fires no projectile object or beam, but this is the parlance we’re stuck with.

  5. “Turning disposable cameras into tasers has been going around for months” – months? years. I have a cardboard box full at home.
    And, I agree with [lonas], 330 v does not a taser make.

  6. They already know. Highschool kids buy one-use cameras and turn them into “tasers” for sale all the time. Some morons would pay $20 for one…

  7. This is a really bad idea.

    Voltage hurts, but current kills. Stun guns and tasers put out thousands of volts but very few milliamps. That’s why they are considered safe even though they hurt like hell and even temporarily paralyze you. They won’t force enough current to stop your heart.

    These flash conversions don’t put out all that much voltage, but with those capacitors can put out way too much current. You can be electrocuted by way less than 300VDC if it’s applied to the wrong part of your body.

  8. sorry, but this is the bitch way to make a tazer i get shocked with 400v all the time and can recover is seconds make a small voltage multiplier like a 10 stage to get some arcing

  9. This would indeed be a Stun Gun, not a TASER. And TASER is not a brand name, it is the name the creator gave it off of novels he used to read. TASER = Thomas Albert Swift Electric Rifle.

  10. localroger,

    You are only somewhat correct in your statements. While tasers and stunguns do indeed put out “very few milliamps”, many inexpensive ones do not have current regulation on the output – they are simply dumping stored power from a capacitor in much the same way as the disposable flash camera setup.

    Further, the thought that “those capacitors can put out way too much current” is only partially accurate. A capacitor in a dead short across a perfect conductor can create a high-amp spike for a very limited duration. However, human skin is far from a perfect conductor. Even in the most conductive scenario (damp skin), skin resistance of two electrodes jammed into your flesh is 10k ohms or more – average is 100k-10Meg ohms (you can verify this with a good ohm meter, btw). Ohms law tells us that at 300V, you will experience anywhere from 30mA to 0.3mA, or less. Somewhat painful, but well below the dangerous or deadly range.

    Further, area of application is critical. If you grab a charged capacitor, it will discharge across the skin in your hand. This may result in burns, but will not be life-threatening. To be dangerous, the current must pass through (disrupt or burn) a vital organ.

    Finally, note that disposable-flash shockers have a finite amount of charge. They may be able to produce current, but only for a brief time before exhausted. This means that even If you manage to approach a dangerous level of current output, the capacitor will not be able to sustain it (as a demonstration, just how long will a photoflash capacitor create sparks when shorted? Not long, you’ll find). The danger lay as much in a sustained current as in a particular current level.

    To conclude, your statement is only partially correct. Current is dangerous, but these flash-zappers are not going to kill a healthy teen+, and less dangerous than a plethora of other things you can get your hands on.

    For some information on dangerous current levels, see
    http://www.physics.ohio-state.edu/~p616/safety/fatal_current.html

    To calculate current through your body, use Ohm’s law:
    Voltage (volts) / Resistance (ohms) = Current (amps)

  11. You choose fight over flight only when you have a decided advantage. This will only serve to piss off an attacker. If you are aware of a threat long enough to to activate the device and have time for it to charge, you should have choose flight. Nothing more than false security.

  12. It is a bad idea!!!

    A lot of arguing over this topic. Volts, amps, resistance, skin type, duration, etc…, and all over such a really bad idea! If it were actually a practical working stun weapon, and it could be used for self defense effectively, and just look like a regular phone, and you feel you need it, then go for it. A friend of mine said yesterday that he “would rather be tried by twelve men than carried by six.” I can see that reasoning. But this is useless.
    First, it is a poor excuse for a joke, (like pulling a chair out from under someone.)
    Second, it is also not useful for self defense, as it is only powerful enough to piss someone off, and only at very close range.
    Third, you would risk the legal repercussions of carrying a stun weapon. It is unlikely you would get caught by the authorities, (unless you use it and someone presses charges against you,) but if you were apprehended, you would probably be charged with carrying a stun weapon without a license, in spite of the fact that the voltage isn’t adequate for a stun weapon. (As a comparison: if someone is carrying a pistol, even if it is a really terrible home made zip gun, it is still a pistol and they would be charged as such.) If the local laws do not forbid a stun weapon, you could still be charged with carrying a weapon.

    This project is a really bad idea.

  13. it’s really useful for people who live in places where cell phone snatching is common.. u can press a button without catching the robbers attention and stun that son of a bitch while handing the phone over to him

  14. This is an awesome site! Looks like you’ve got a lot of experience in self defense products and training. I do some work in that area too, so it’s nice to meet another industry friend.

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