Not long ago my brother wanted to know if I could make a van alarm that would send a text message to a cellphone notifying that the car had been broken into.
Are there '2g/3g cellphone modems' that you insert a sim into and connect to an arduino's serial pins? It would have to be able to:
- Monitor sensors eg reed switch, motion sense, infrared.
- Monitor GPS coordinates (using arduino gps shield?)
- Receive text commands like 'activate' 'location'
- Send status messages + GPS data to user.
Thanks in advance for replies 8-) Tim.