If you remember well, we were using PU foam in the insulation box that will keep the electronics of Octanis working at 100%

Well, now we're trying a new material that is easier than the foam to shape, we are currently running a long test in both (the PU foam and the rock wool).

We covered the interior of the a cardboard box with a 4cm layer of rock wool, and with out any heating source we were able to kept the inner temperature in an environment of  -77°C during 24 hours.

This result is incredibly promising, and inspire us to run a test during a longer period of time.

If you want to know more about this experiment and the thermal insulation , you may want to visit our wiki.