for what you pay in cellular costs you can afford an actual security system.

I did GPS over SMS once and scrapped it.

If you check out the website, you’ll see the hidden microcontroller. Here’s a hint, its on the back!

@tjhooker:
Well… no, not really. Stick a prepaid card in the alarm phone, those ten bucks will last you at least 20 break-ins. Then get a flat rate messaging option for your main phone, something many people have anyway these days.

How easy/difficult would it be to achieve something similar to this WITHOUT the need for a mobile phone? I.e a microcontroller connected directly to a SIM card to send SMS an alarm?

I like how it powers the phone, but on standby it can stay on for a long time, or just plug it in.

But the interface to the one in opengpstracker is easier (the headphone jack is also a ttl uart interface) using a Motorolo C168i which is still available as of last month.
http://www.opengpstracker.org/

i’ve been thinking about something like this but without using a phone. I was thinking maybe for a mailbox alert system.

i can’t see the code and schematics?where can i find it?thanks.

Hey, I’m very interested in how you managed to do all that in the video. i’m trying to do something similar myself. You said that the code and schematic is at the bottom of the page yet i can’t find it, can someone point it out or send it to me? thanks

I cannot see the code for the PIC. Have you removed it? And isn’t the setup compatible with any Nokia sets?