Heh heh heh heh heh heh...

[Mike_Windsor]

So I was thinking about something.

Would it be possible to wire the ignition system so that when the key is turned on, a digital sound file plays from under the hood? Similarly, when the key is turned off, a different one plays?

[BigT]

You mean like Win7 boot up and shut down...!

[pantera77]

Anything is possible.

[Mike_Windsor]

More like the Transformers' transformation sound. ._.

[SVT98t]

If you have the time and/or money, you can do anything.

-ryan s.

[Mike_Windsor]

I guess I was asking how technically feasible it would be.

Sure, if I had $500,000 to blow on my car, I'd make it sing and serve me omlettes in the morning. EVERY! Morning.

[BuffaloRider]

That'd be sweet to turn the key and hear the sound effect of a deep lion roar come from under the hood, or something like that. A little too attention grabbing for me, but I would still love to see it done.

[sly]

the cheap way is to have a small timer circuit set up to pulse on turn on to one sound recorder (pulse goes to play button) and send a pulse to another recorder when the ignition power is removed.

I'd have to research it to figure out how to make the circuit (or find an off-the-shelf kit) but I'm feeling rather lazy right now after re-engineering the lifts in the Lincoln's trunk. Now I know what to do about the geometry and it's a project for another day.

[zoomie]

the cheap way is to have a small timer circuit set up to pulse on turn on to one sound recorder (pulse goes to play button) and send a pulse to another recorder when the ignition power is removed.

I'd have to research it to figure out how to make the circuit (or find an off-the-shelf kit) but I'm feeling rather lazy right now after re-engineering the lifts in the Lincoln's trunk. Now I know what to do about the geometry and it's a project for another day.

if memory serves correctly they make a circuit already for leaving digital messeges, it wouldnt be too hard to wire a small 10 or 15w amp to it and connect it too a horn or speaker of some sort. then make a switch for when the ignition is turned on and off, i would think it would be something like a basic alarm circuit kinda with relays and such.

[phayzer5]

Radio shack has an audio module that stores 30 sec of audio that you can record yourself with the incl mic. I used it for a motion-sensing pumpkin with flashing red/white LEDs to scare some kids for Halloween. Soldered in a transistor across the power contacts so the Arduino could trigger the audio module with the lights.

Should be easy enough to wire up some relays and a timer circuit to power the whole deal for a car. Mount it all under the hood for easy access to ignition and power wiring. Make sure to silicone the project box if its a long term deal