Pimped Out Megaphone Helmet
by talbotron22 in Circuits > Apple
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Pimped Out Megaphone Helmet

Here I show how you can very simply modify a megaphone to accept 1/8" line input from an iPod, and mount the megaphone on top of a motorcycle helmet. The resulting "Mega Helmet" delivers the maximal aural stupidity allowed by law.
Get a Motorcycle Helmet

Get a motorcycle helmet. I picked up this Honda one at a yard sale for $5.
Get a Megaphone

Get a megaphone. Here I am using a Radio Shack 32-2038A 10 watt one. It is pretty loud.
Take Out the Guts


Remove the batteries and open the housing for the circuit board. This is accomplished by taking out 3 screws on the back of the megaphone.
Prepare the 1/8" Plug

Trim the ends off of two lenghts of wire. Tin them and solder to the 1/8" plug. Ground goes to the outer of the two leads (here I have made ground the red wire, oops).
Run Wire Into Circuit Board Housing

Remove the handle from the megaphone, drill a hole through it, and run the wires from the plug into the body of the megaphone.
Solder the Wires Onto the Circuit Board

Solder the wires onto the circuit board. Ground goes to "ground" and the other wire from the plug goes to "in."
Screw Everything Back Together

Reattach the handle to the base, and put the circuit board back in.
Attach the Megaphone to the Top of the Helmet

Place the megaphone on top of the helmet and attach using copious amounts of duct tape. About 1/2 roll should be enough.
Attach the Microphone



Put the microphone on the inside of the mouth portion of the helmet. Attach using wire. On this helmet it was really easy because there was already a mesh grill by the mouth.
Mount the IPod


Put the iPod on top of the helmet, like the cherry on top, and attach the 1/8" M to 1/8" M cable to the plug on the megaphone.
Play Softball

Go play softball wearing the helmet. It is very good for antagonizing the pitcher, and trash-talking in general. The helmet allows both for amplification of your voice, and playback of mp3s from the iPod.