The 555 Electronic Cricket Prank

This dastardly little prank will have your victim screaming (or yelling) all night. I'm not a big prankster but this one is just plain fun.

I found this in More Electronic Gadgets for the Evil Genius by Bob Iannini  It was called the Mind Mangler. Just thought I'd credit such a great guy.

Here is a video:

So, let's get started.

Step 1: Without Further Ado: The Materials

You will need:

2 555 Timers
1 100K Resistor
1 1K resistor
1 4.7K Resistor
1 100 uF Capacitor (I used 33 for an awesome result...you should get some others in the range for your favored result)
2 0.01 uF Capacitors
1 0.47 uF Capacitor
1 1uF Capacitor
1 Photocell/Photoresistor (A phototransistor will work as well)
1 9 volt Battery Clip
1 Piezo Transducer (I don't know what to say...I found mine on accident. Try a few to get a favored result.)
1 Audio Transformer( I got mine here)
A few sockets if you like to socket parts such as photocells, transducers, resistors and capacitors.
1 Perf Board/ Breadboard

Comments

[resistanceisfutileiflessthan1ohm]

nice idea, i have heard of this before, clearer steps would be good.

[Higgs Boson]

The schematic does not have values for the parts. If you could include what value things like R1, R2, R3, C1, and so on that would be great.

[blinkyblinky]

Oops. I will work on it and get back to you. Thanks.