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This is one lesson from a Simple Circuit Unit that I created for middle school and high school students. It is fun and involves hands-on learning. For more cool hands-on engineering projects check out Machine Science (This is where I work).
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Signing UpStep 1Simple Circuit Games Unit 1: Wire Loop Game
If you have ever been to a carnival or an amusement park, you may have seen or played a simple hand-eye coordination game involving a metal loop on a handle and a length of curved wire. In this game, the player holds the loop in one hand and attempts to guide it along the curved wire without touching the loop to the wire. In the carnival version, shown in Figure 1, the handle delivers a mild electric shock to the player when the loop and the wire touch, signaling that the game has been lost.
In this project, you will build your own wire loop game, using wires and batteries. In your game, players won't receive shocks if they lose. Instead, a buzzer will signal whenever the metal loop touches the curved wire. The wire loop game has two challenges. In Challenge 1, you will learn how electricity from a battery can be used to make sounds. In Challenge 2, you will build your own wire loop game and then play it.
In this project, you will build your own wire loop game, using wires and batteries. In your game, players won't receive shocks if they lose. Instead, a buzzer will signal whenever the metal loop touches the curved wire. The wire loop game has two challenges. In Challenge 1, you will learn how electricity from a battery can be used to make sounds. In Challenge 2, you will build your own wire loop game and then play it.
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I recomend using a resistor (the right ones will usually come with the LED) before the led and putting the speaker first so that the resistor dosn't mess with the sound. remember, current flows from negative to positive
Sorry if i went into too much detail, after having to prove to my friend that there is no "Any" key on a keyboard i've started to lose faith in people
The issue is having to ground the person you're shocking vs using the human's ability to leak charge and act as an effective enough ground.
your taser has 2 terminals right? i'm talking enough voltage to tase somebody with only 1 terminal.
read about it here: http://www.instructables.com/id/SP6MCPCF6B7T1OG/