WF8266R IoT develop board based on ESP8266 http://unumobile.gitbooks.io/wf8266r/
Simple weather station running on a NodeMCU (V3 - ESP8266) reporting data from a BMP180 sensor, a DHT11 and an LDR.
This is measuring the temperature inside my son's fish tank. This is much better than the temp strip on the side of the tank.