How Do I .....

[BigBear]

So imagine it's Christmas time and you're driving around looking at lights. There are places you can drive to and put your car radio on a certain station and the homeowner can run a light show with music.

How do they do that?

I want to do a fundraiser for my school (please don't get into all the legalities yet of it as that's not what this is about, I am working with the district lawyers, etc).

Basic Logistics are to hang a sheet off the school and do a drive in movie with a projector (do I need a special projector too for that?). But the sound... how would I do the broadcast thing so people can tune their car radios (about 60 cars I would think) to a certain channel and hear the movie?

Thoughts? Thank you.

[SouthPaw]

http://wholehousefmtransmitter.com/fm-transmitter-for-xmas-and-christmas-lights-to-music-display-like-light-o-rama/

I think?

[Erni]

Sparkfun electronics in Niwot may be of help here. They sell kits for FM and other stuff. They seem very education oriented, so they might be willing to pitch in.

[flogger]

Two words, Mr. Microphone.

[BigBear]

Thanks for the replys!! An FM transmitter just might be the key. I'll also check out the other ideas as well

next problem: would a regular projector work or do I need something made for distance and outdoors... Might have to camp out at school and just try a bunch of different things, lol.

[Danimal]

A regular projector should work, just make sure that you look at the throw and screen size for the projector that you are using. The picture sometimes looks a little washed out if there are sources of light behind the screen.

http://www.projectorcentral.com/projection-calculator-pro.cfm

Also with your FM transmitter, you really need to look at the range. Many of the small house transmitters have like a 50' range or less, so if you have 60 cars, the ones in the back might get a distorted or over lapping feed.

[BigBear]

Danimal, I found a FM transmitter that covers a radius of 150ft... "Should" be sufficient for my application. Thxs for the reassurance on a regular projector. Was doing some research and some of the drive in ones are 30k plus, wow.