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Picture of Laser Show!!!
We will be making a laser show that involves mirrors, speakers, and lasers!
 
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Step 1: Gather Materials!

For this project you will need:

- small mirrors
- a <5mW laser (for the best effect)
- a base ( a wood, metal or plastic sheet to mount all the items
- a small computer speaker set
- a music source (phone, mp3 player)
- a screwdriver
- double-sided tape
- glue gun
- metal clip ( to hold laser)

optional: small metal clips ( to mount extra mirrors)

Step 2: Ready the speakers

Picture of Ready the speakers
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establish a clean base, make sure there is nothing sticking out of the piece of plastic, metal or wood. Get the computer speaker set and if there is any mesh or covers on it, using a screw driver take out the screws holding the cover of the two speakers. You will then see the inside of the speakers, it will look sort of like the outside of a sub woofer. Test out the speakers and see if they still work. As the music plays touch the circular speaker and see if they vibrate. If they do, we are ready to go!

Step 3: Mount the mirrors

Picture of Mount the mirrors
Acquire the small mirrors. Using a small piece of double sided tape, take a small square mirror and mount it on the cone, slightly under the direct center. Repeat this process for the second speaker as well. Make sure the mirrors are properly placed.

Step 4: Set up the project

Picture of Set up the project
Now take the base and mount the two speakers in the top left hand corner of the base using a glue gun or tape. now using one or two lasers. mount the lasers. You can mount the laser using the metal clips, place the laser in the clip and you can even let the laser stay on by putting the clip over the on button.

Step 5: Final Touches

Picture of Final Touches
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Now turn on the lasers and try to position them so they directly hit the mirror on the speaker and bounce off to hit a wall. You will want to move the clip or the speakers so they will be positioned exactly to hit the tiny mirror.
dagaherz2 years ago
And what about to add a prism?!? separating colours...
Price in chinese stores are ridiculous and with this great idea...
Hummm I can get a Disco in my home!!!
No colours to separate in a laser - it's famous for being monochromatic (single-coloured)!
K4nyix nwlaurie2 years ago
The whole point of a laser is to be a monochromatic coherent light. That means, it's only one single wavelength, and all the waves are "synchronised". If you use a polarizing filter, the laser will even have waves all going in the same plane... Go check on wikipedia, they explain it better than I do. And although that's very interesting in physics, but will fail any kind of prism-like use :/

Though a thing I'd try and do to have this upgraded, would be to find a way to increase the angles _ in other words, to make the laser figures bigger.
That could be achieved with a bigger sound system (a subwoofer will vibrate obviously much more lol), I guess... Or maybe mounting other mirrors on vibrating surfaces, like an elastic food wrapper kind of thing mounted on a wooden frame...

Well. Anyways, very nice project, it's kinda easy and all, which is cool. If you feel like working more on it, I'd advise totally take the speakers apart and make a complete custom mount :P
A laser light is in a VERY narrow spectrum, so a red laser will still give only red light if passed through a prism.
Theoretically, If you had a white laser that contains all the colors of the rainbow, and passed it through the prism, you'd get a dancing rainbow. However, the only white laser I know that's affordable is home made with 3 lasers (Red, Green, Blue). It's kinda complicated to make, and you still won't get a rainbow effect, just 3 dots in 3 colors (Red, Green, and you guessed it, Blue).
dacker2 years ago
It's nice to see this implementation. It's identical to one ideated by a college roommate in 1979. Lasers were far too expensive back then to implement.
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