ESP8266 running NodeMCU with a DHT11 to report humidity and a BMP180 to report pressure and temperature. The Sensor also reports battery voltage which is 2xAA batteries. Photo: http://imgur.com/hDpeNxj
Room temperature, relative humidity and Barometric pressure test using an ESP8266 with DHT11 and a BMP180.
ESP-01 DHT11 Temperature, Humidity, LED Light and ESP-01 Free Heap Monitor.
Data from inside and outside sensors. The sensor shares data to a basestation using a 433MHz link.
This channel is a on to try things out - and leave the primary channel alone.
Temperature and Humidity of CCTV DVR as Monitored by a Raspberry Pi.