Sorry if this is the wrong place to post this, but I couldn't find any other categories that this would fall under. This is a small project that I'm working on that I thought I'd share with you guys here, especially to see if there are any electronic hobyists or electrical engineers in the making.
So here I made a cell-phone triggered circuit for fun that basically gets triggered by a cell phone.
You call the cell phone, it rings, and sends out a signal to a circuit.
This is very useful for various things like launching a rocket (which I've already done), launching off fireworks, opening your garage door, turning on a webcam, and copious other different applications.
http://www.youtube.com/watch?v=QpOzitB93Ak
The phone I used was a $10 disposable phone that I got from Wallmart.
I plan to eventually possible turn this much bigger project by making a cell-phone controlled RC car. Basically you call the phone attached to the car which utilizes a PIC 2 microprocessor, and then you can control it with the keypad of the phone that called it.
Note:
You can ignore the piece of paper in the background, I posted this on my home forum and I just wanted to prove that it was made by me, by no means am I trying to advertise the forum.