TTGO ESP32 with SSD1306 OLED display and Senseair S8 LP Sensor https://wiki.liutyi.info/display/ARDUINO/TTGO+ESP32+OLED+Senseair+S8 WEMOS ESP32 with SSD1306 OLED display and Senseair S8 LP Sensor https://wiki.liutyi.info/display/ARDUINO/WEMOS+ESP32+OLED+Senseair+S8 https://wiki.liutyi.info/display/ARDUINO/Blynk+local+server+for+DIY+CO2+meter+example