The bouy system consists of five parts:

• Motor controller
• Ultimate GPS
• ESP32
• LoRa RFW95
• SIM7600 (GSM Modem)

We have finally decided to go for ESP32 for the firmware interface for both the bouy and the onboard gateway.

This is an ultra-low-power solution designed for IoT applications because of its low power with a transmitting power of +12dBm.

For the purpose of our solution, we shall develop all the firmware on the ESP and the memory will be enough to serve for the Bouy and onboard gateway.

During the design, we shall develop the firmware code on Arduino IDE for coding flexibility among the team and for quick debugging.

The first test process is to check the network connection by interfacing the ESP with the GSM modem and enable the connectivity and then implement the GPS directly to the bouy.