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The ESP as Weatherstation. He collect humidity, air pressure, temperature and may be more. Send the data to Raspi

The ESP as Weatherstation. He collect humidity, air pressure, temperature, lightvalue and may be more.  He send the data over mqtt to a smart home Server, a Raspberry Pi.
Here it will be the Data stored and visualized.
The Weatherstation has to work as stand alone, too. The Data will be stored in a SD-Card and the Energy will be generated by solar power.
May be, i will find same additionals.