Hey,
I saw in another thread that you were looking for a way to track how many Senseo are running your firmware. I think I might help with that. I can write a little public dashboard in python with plotly dash that accept post requests from SenseoWifi and display the number of active senseo on diagram. Then all what we need to do in the firmware is to push a request to that server every now and then with a unique ID (a CRC of the MAC address should do the trick).

This raise a few concerns, though :

• We need somewhere to host the dashboard
• If we do that in amazon (or any similar service), it will cost a small fee every month
• If we host that ourself, it means that our public ip will become available in the source code
• In the esp firmware we'll need to contact the server regulary, maybe once a day or once every coffee. I don't know the state of HTTP libraries in the esp, but if those calls are blocking it might become an issue, especially if the server is slow or sometimes down.