Bluetooth Enabled GPS Receiver

The GPS module used was a 'Socket OEM Bluetooth GPS Receiver'[30]. This module has a Bluetooth interface which allows it to communicate with the Gumstix. Its dimensions are 51x85x21mm and it has its own rechargeable battery which is operational on single charge for eight hours. The noticeable disadvantage it has is the time it takes to obtain the first fix which is typically between 40-70 seconds.

Figure 3.6: GPS Receiver.