In the Self-Learn part, you discovered the ESP and how to program it. We will use such an ESP in a special Addon, that can be attached onto a Senseo Coffeemaker to detect which Product is produced by the coffeemaker and label the data, accordingly. The data of the Coffeemaker-Addon will later on be needed to be synchronized with the data of the energy-monitor (which also has an ESP inside).
In this image you can see which sensors the addon consists of.
As you can see, we have another data source in addition to the power box. Now the synchronisation of this is crucial. We have set up a so-called NTP (Network Time Protocol) server service on our laptop server. The power box sends a request every 60 seconds to the NTP server and obtains a new time stamp. :books: This should also be done by the coffee machine. This means that synchronisation in this project is implemented via a central server service.