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Build your own Taser

This is a guide to build your own taser with computer parts you probably already have and some other parts. Please be aware that this taser produces very high voltages and can lead to massive damages if not used with caution.

What you need

- a power supply unit of an old pc
- copper wire / earphones that were cut on both ends
- 4 × 9V Batterys (you can use lower volt batterys, but every volt less increases your reload time)
- Crocodile clips (to connect the batterys with the capacitor)
- Duct tape (Not necessary, but it could help you if you need to insulate something or fix something in place)
- a button
- a Screwdriver

Instructions

1. Step
Connect the 4 × 9v Batterys together, like this: Here the image.

(they do not need to be some expensive ones, I just used some from IKEA for 2€ a piece)

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2. Step
Open the old pc and remove the power supply unit. The power supply unit can normally be found in the area I marked in the pictures.
Here the image.

Here the image.

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3. Step
Open the power supply unit with a screwdriver (you may need some force to open it, if not all screws can be removed).

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4. Step
After you opened the power supply unit, you should already be abled to see some Capacitors (picture 1). Get the biggest Capacitor possible out of it by pushing it up and turning a bit on it.
Here a picture of the capacitors i got out of my power supply. The biggest or the one i used for my taser is 3cm/1.5" in height. (the one on the far right).
Here the image.
Here a picture of the capacitors on a motherboard (I only have a old motherboard left to spare, so i cannot show pictures of the original power supply unit. But I think you get the idea.)
Here the image.

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5. Step
After you successfully removed a capacitory, hook it up to one of the 9V battarys (wear cloves, and protect your eyes in case the capacitor explodes.) After 10sec hold the two wires of the capacitor onto a piece of metall (at least 1m away from your body) and look if someting happens. If nothing happens, repeat the above said with more 9V batterys as long as nothing happens. If you can see a big spark, like in the video of my taser, then you shouldn't touch the wires of the capacitor in any any more( this could lead to you being electrocuted).
Now your taser is already finished. The only thing left to do is building a case for it.

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6. Step
The last step is building a case. I made mine using some old metall plates with wholes drilled into them. These holes allowed me to fix everything in place using just some srews.
If you do not have some spare metall plates, you can use the power supply units case. Just drill a hole into it and but the capacitor halfway through it.

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7. Step
The very last thing to do is connect the capacitor to the batterys with a button.
Just connect the two ends of the capacitor to two different wires. Wire1 should lead to nothing and the Wire2 should lead to the button.
Now only connect the wires to the batterys using the Crocodile clips and watch and you are finished.

Here a few images

here to image one
here to image two
here to image three

Here a video of it

Note: I don't know if you noticed, but i didn't charge the taser in any way. If you press the button for 10+ seconds and the release it, then the spark are much bigger.