The goal of this project was to build affordable mobile tracker. Device can be put in a car where it can trigger an alarm when car gets stolen. Device itself is very simple as GSM module already comes with GPS module (GM862) built in. Alexander Weber connected this module to Atmel’s Atmega8 microcontroller (circuit) and communicated using serial modem communication protocol. Device can send text SMS message with device GPS position data. Project author provided only eagle circuit.