Considering a buoy with an arduino kit with the wifi antenna and booster installed connected to a solar panel for powering is in total 600 reais, and the online platform for monitoring is 2500 reais. For the coast of Salvador as an example, there are 30km of coastline

We decided to use only the buoys without balloons, with a repeater and an amplifier to increase the range to what's normally 1 km to 2 km.

Starting pitch development.

We started with the idea of using buoys with with li-fi to transmit data to other buoys then change it to wi-fi. But we have found that the range is only 10 meters, so we moved on to the idea of using helium balloons to transmit data via wi-fi and other signals, working as repeaters to pass on the signals.

Now, we're thinking about the viability and price of the project.