Hello Guillaume,
I have read about your project and I find it very interesting and very well documented.
This weekend we have an EA-CT microwave meeting https://micromeet.org/ and I have no doubt that it will be the subject of discussion.
I have installed the SW and indoor tests seem fine.
Later I will try the loop on the QO-100 and then waiting for you to start the HUB.
Congratulations for your work!!!
73 Aitor