Environment data station build with ESP8266 NodeMCU using: 1. GY-21-Si7021 (outdoor temp & hum) 2. DHT21 (indoor temp, hum) 3. DS18B20 (heating water temp) 4. CCS811 (indoor air quality eCO2 and TVOC)

Getting data from DHT22 sensor

Temperatura e umidità del sensore 01