I have a Raspberry Pi doing data logging of my CV instalation, gas & electricity usage: * The temperature using SPI using [http://domoticx.com/raspberry-pi-temperatuur-sensor-ds18b20-uitlezen/ this guide]. * The Intergas CW6 using https://github.com/rickvanderzwet/IntergasBoilerReader * The Landis + Gys E350 meter using https://github.com/rickvanderzwet/IntergasBoilerReader * The Growatt 1500S using https://github.com/rickvanderzwet/GrowattReader