I've put a lot of reading and thinking about it but I didn't find a solution with my limited knowledge in this area.
Here what I do. From devices reading, I write those reading in a local file in the file manager of the hub with a "rule machine". From an always "on" computer running on Windows 10, with a python script, I retrieve the data from the url address (http://ipadress of the hub/local/filename) and analyse the data to make a graph in png format.
The next part is what I'm struggling with. From the reading I made, I decided to install XAMPP so the file is now visible for the hub to make it available in the dashboard with an url address from the image located on my Windows computer. But the problem is that image in the dashboard is only visible when I'm local and not when I'm away from my house.
I've read topic related to influxdb and graphana but those seems a bit complicated, but however, I didn't not really try this path yet.
Any possible solution for my problem?
Thanks in advance!