Temperature in Leonberg. It is an PIC32MX measuring temperature and pressure with a BMP085. Data logging is done with an ESP8266 interfacing it over the usart interface with AT commands.
This is the second device that I am building and is based now on BME280
Display Thermal Performance of Solar Panel, HX, Storage Tank system. A Photon is used as an independent reporting system and not part of the system controls.