Remote Monitoring with FONA, from a Raspberry PI, in Java

This project is an enhancement of the one already mentioned here.
We start from a Raspberry PI connected on an NMEA Station, and we add a FONA to it.
The idea is to

• Send an SMS to the FONA, to get various data from the NMEA Station (like wind speed, temperature, battery voltage, whaveter the station can read)
• Subscribe to a specific type of data, and the FONA will send it to you on a regular basis, like "Send the battery voltage every hour, during one week".

Sample screenshots