While setting up the software and infrastructure for the Tracker, some problems have been discovered.

The main one is that the Sim808  doesn’t use SSL, or isn’t reliable while using it.

I tried some different solutions:

• Redirect non-https connections using CloudFront
• Creating a custom PHP API on my running servers

Both solutions have been unsuccessful, also because seems that the module is stuck with HTTP/1, generating some more problems while sending complex messages.

Maybe a firmware upgrade could solve this issue, I will see this week.

Following a picture of the board that I am using: Sim808 Ecb V3.2

Some picture of the work in progress of the sensor, I should be able to keep it compact.

I started to setup the GPS Tracker.

Some functions has been tested: GPS and GPRS connection, with a simple API request, and call and SMS, all working.

Here’s the top level diagram, following more details and code.