ESP8266 and DHT22 based smart sensor

This is part 3 in my IoT series of blogs. The first parts did cover the following topics Introduction into the planned scenario Building a Rasperry Pi based Smart Gateway In this article I will describe how I build my first physical sensor, based on an ESP8266¬†microprocessor and a DHT22 digital temperature and humidity sensor. … Read moreESP8266 and DHT22 based smart sensor