Zambretti Forecaster on Solar WiFi Weather Station

Based on the work of Open Green Energy. https://www.instructables.com/id/Solar-Powered-WiFi-Weather-Station-V20/ Authors of the base code: Keith Hungerford and Debasish Dutta - Excellent work, gentlemen!

Major changes:

• simplified, restructured code (used Adafruit libraries for BME280 instead, sorry for this Keith)
• added relative pressure, dewpoint, dewpoint spread and heatindex calculations
• allow Blynk (deprecated by Dec 31, 2022), ThingSpeak and MQTT data transmission
• redesigned box (simplified printing, less plastic usage, full snap-in)
• available languages (a big thank you to the contributors!)
  • English
  • German
  • Italian (Chak10)
  • Polish (TomaszDom)
  • Romanian (zangaby)
  • French (Ludestru)
  • Spanish (Fedecatt)
  • Turkish (Mert Sarac)
  • Dutch (Rickthefrog)
  • Norwegian (solbero)

Changes in V2.3

• included famous Zambretti forecaster (see Blynk example)
• added translation table for Zambretti forecast
• added multi language feature

Changes in V2.31

• added Dewpoint Spread
• fixed some minor things
• added Zambretti forecast in Thingspeak (thank you ThomaszDom)

Changes in V2.31 (MQTT version)

• allows to publish data to MQTT broker (alternative .ino file)

Changes in V2.32

• Battery monitoring and going to hibernate if battery low (battery protection)
• Warning text will be shown instead of Zambretti prediction if batt low

Changes in V2.33

• Corrected bug in the winter/summer adjustment for the Zambretti forecast

Changes in V2.34

• added August-Roche-Magnus approximation to automatically adjust humidity with temperature corrections
• Code cleanup

Changes in V2.35

• corrected TingSpeak communication changes (needs now Channel ID and KEY)

Print the box yourself: https://www.thingiverse.com/thing:3551386

BLYNK legacy (used in this code) will get deprecated! Legacy server shutdown - December 31, 2022 (https://blynk.io/blog/what-will-happen-to-the-legacy-blynk-platform). I do not plan to update to new Blynk - maybe someone here in the community?

Showing the data on a LED display: https://github.com/3KUdelta/MDparola_MQTT_monitor

Node-Red example showing MQTT messages on dashboard.

ThinkSpeak Example (ThingView iOS):