Category Archive for: ‘FHEM’


In I have attempted to describe how I am graphing my heating system using PHP, FHEM, RRDTool and JavaScript. It seems that FHEM+PHP is a popular search term landing on my website so I wanted to explain in a little more detail how this part of the system works. FHEM provides a really useful method of pulling out all …

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Monitoring temperatures using FHEM, RRDTool, PHP & JavaScript

My Household Temperature Graphs page displays various statistics from my heating system. In this post, I explain how I produce these graphs using a combination of FHEM, PHP and RRDTool. The heating system is based on a number of these Conrad FHT 80 BTFN sets. The programmer controls the actuator via 868Mhz RF and the signal is received by an …

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