Help! I need LOTS of advice for making a sound/light board thingie.

Hey there, everyone! I'm in the process of making a prop gun from one of my favorite comic books "Scud: The Disposable Assassin." I was first just going to make it solid resin, but after a bit of thinking, I realized that it'd be a lot cooler if it emitted gunfire sound effects and flashed lights out the barrels...kinda like those chintzy space guns you saw at the five and dime only with better/louder sound quality and really bright LED's.

Now the prop in question is a sort of futuristic pistol with three barrels and two switches on the top. While they never really explain matters fully in the comic, I assumed the switches on top of the gun were intended to "activate" the other two barrels: No switches pulled, one barrel fired. 1 switch flipped, the bottom two barrels fired. Both switches pulled, all three barrels fired.

Here's my question: Is it possible to rig a sound/light thingie to work the exact same way? What I would like is if the trigger is held and no switches are flipped, a continuous machine-gun fire mp3/wav would sound and the bottom barrel would flash an LED rhythmically. If the trigger is held with ONE of the switches pulled, the bottom two barrels would flash their LED's and you'd hear TWO DIFFERENT machine-gun fire mp3's sound. With the trigger held and BOTH switches activated, all three barrels would flash (out of sync with each other, of course) and THREE DIFFERENT machine-gun fire mp3's would sound. Keep in mind that if it makes matters easier, I'd be willing to give up the three different sound effects as long as the strobing of the three LED'S were still intact.

I remember that Italian fellow who did up his E-11 with an amazingly elaborate soundboard, but I've forgotten his name. However if anyone else has any idea on whether a.) My idea is possible and b.) Roughly how much will it cost, I would appreciate it immensely.

Thanks in advance, guys!
 
I love scud, you're the first person I've seen do something of scud. I don't understand which gun you are talking about though
 
Are you still looking for a light sound kit, if so how much room do you have inside the gun?
 
@exoray: The main body of the gun is pretty big: 14" x 2" x 8". I know I can fit a sound board in there, but there will also be a speaker that I need to squeeze in too.

@DrewSmith007: I was reading through Volpin's build-up of his Daft Punk helmet and saw that term. I'll do more research into Arduino and see if I can figure out how to make it work.
 
Yes it is possible. You are gonna need to learn how to build a circuit for the LEDs and a circuit for the sound. Go to youtube and/or google and search for "building circuits" and such.

You also need to learn how to program. You will need some kind of micro controller that you will add code to in order to control your LED's and speaker rig. Make sure your controller has enough memory to store your sound files. Like drew said, google "arduino" since those are pretty popular controller devices and look for how-tos.

I have used components from Pololu Robotics and Electronics. They also have micro controllers, speakers, LED modules, etc.

For a rough estimate, counting the materials you need for this board plus any tools you will need, I'd budget for $100. It could probably be done for less.
 
It's a bit late for this info, but in case you still want to know how to do exactly what you want with one sound board, it's easy. Buy this: Sound Modules

Send them three separate sound clips. One with the single gun sound, the second with two that you either have prerecorded, or you mix the two yourself, and then the third with all three. Make sure to specify "play with press and hold loop". This board is much easier than the Arduino because it will come preburned and programmed and ready for wiring.

A three pole switch in conjunction with the trigger switch would be best and make this a no brainer. But if you must, you then rig a basic logic circuit where the trigger closes the loop. You will need double pole, double throw switches. You have the trigger by itself with both switches off activate pin 19 on the chip which plays MP3 #1. Flip switch 1 and the circuit path changes to activate pin 18 which plays MP3 #2. Then if switch 1 AND 2 are flipped, closing switch 2 opens switch 1 (disabling pin 18) and creates a closed loop to pin 17 which activates mp3 #3.
 
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