Design and Assembly of the Sensing Platform: The holder was designed using FreeCAD and 3D printed using a Prusa 3D printer. The holder was then attached to the Styrofoam boat and adjusted so that the etalon chips could be fully immersed in water. The camera and LED lighting system were included in the wireless Wi-Fi module and were integrated  and programmed into the whole control system so that the picture taking and lighting can work together to get good quality pictures.