Hi, I am currently interested in creating a car alarm that can send/ recieve SMS. I know it has been done to death but I am going to integrate it with a cheap GPS reciever and Google maps to provide a cheap (as cheap as the network provider) on demand tracking service.
Basically I have found a cheap GPS reciever but I havent found a unit that might be able to do the GSM stuff. I would be controlling it with a cheap microcontroller so hopefully it could handle itself pretty well.
Anyway thanks for any advice, and sorry if I am too vague, basically a link or two to places that might sell such things would be a great help.