We continued working on integrating all of the components of the RFID reader system this week. As of this point, we are able to read RFID tags and GPS coordinates and send this data over a cellular connection to an MQTT broker. We have a server setup that subscribes to the MQTT broker, listening for data which it can store in a SQL database. We also have a UI which can display the data in the database. Our RFID reader is capable of reading from a distance of 20-25ft.

While we were integrating our components, we ran into a few problems which we still have to resolve. One of which was the delay time between transmitting a message to the MQTT broker and receiving an acknowledgement. While the microcontroller is waiting for an acknowledgement, it is unable to read additional RFID tags. We have several ideas for how to solve this, and plan on working to implement them in the coming week.