How it works

The raspberry takes a picture — North oriented — each hour (I can remotely launch command using voice and get raspberry statement on smartphone using RaspController) and then filters the pic (labels: Purple, Graphic design, Magenta, Art, Visual arts). The difference between the two determines the light exposition, increasing or decreasing. The sensor switches blue or red

Pressure Temperature Humidity
990.48 mbar 21.2 °C 34.58 %

It communicates through Openweathermap to display on the micro:bit the current forecast (Rain)

The distant micro:bit counter is set to -1 when it switches to red (the speaker plays a sound) and +2 when it swithes to blue (+4)