ESP8266 for Temperature logging for a solar water tank and the ambient conditions.
ESP8266 DS18B20 using nodemcu FW following these instructions: http://www.instructables.com/id/Low-cost-WIFI-temperature-data-logger-based-on-ESP/
Some environmental data coming from tests in my apartment, located in Castelplanio, Le Marche, Italy.
Data from inside and outside sensors. The sensor shares data to a basestation using a 433MHz link.
ESP8266 with a ds18b20 temperature sensor mounted in the HVAC plenum right above the air handler.