Sensors used: DS18B20, BME680, K-30 from CO2meter.com. Microprozessor: ATmega2560/Ethernet-Shield. All Sensor values are permanently saved.
Weather station in Brig Valais. It is solar powered and uses wifi to upload the data. Hardware used: TP4056, ESP8266, DHT22, 3.7V 1500mah LiPo battery, 6V 400mA Solar Panel