Our scope of work involved the complete design of the electronics hardware together with embedded firmware. It also involved the selection of a suitable IP rated mechanical enclosure, a suitable large size display, establishing communication so that the telemetry data could be transmitted, build the prototype, and calibrate the device so that the UV index is correctly displayed.

The main challenge in this project was to find a suitably sized large display to display the UV index and the temperature alternately. There were no large size E-ink display available at the time we commenced the project. Therefore, this had to be specially engineered and the risk was the inability of the chosen supplier to produce the display. Having a backup supplier was not an option to mitigate this risk as it would double the engineering costs. Therefore, the only way was to be in constant regular touch with the chosen supplier and support them and help them deliver the displays, which we did.