I interviewed Arjan Frijns, he is a professor at the TUE. My notes and results are depicted below on the A3 sheets. Next to that are a pair of inspirational images of a heat exchanger.
Using an arduino can be in contrast with the lowtech. But anyways, my parts arrived to make a light tracker. Finding out what the benefits are of following the sun precisely, related to energy outputs, are interesting. To see a result between a moving setup and one that stands still. The package contains light sensitive resistors, temperature sensitive resistors and 1K resistors. I will print an opensource model to explore the functions.