After installing the CT100 smart thermostat I was checking for possibilities to use its data in fhem, and found a Node.js snippet by Robert Klep. In the following I explain how to setup the NefitEasy client and connect the data to fhem on a Raspberry Pi. Weiterlesen „fhem: Monitor the Junkers CT100 Smart Thermostat (aka NefitEasy)“
I have connected more than one USB devices to my fhem Pi home automation server. When restarting the server, after an update for example, it is kind of a gambling how the system is assigning the USB devices to /dev/ttyUSBx. Instead of changing the fhem configuration after every restart you can link to definition to /dev/serial/by-id/. Weiterlesen „fhem: prevent random assignment of USB devices in /dev/ttyUSBx“
Last year I moved to my new flat, which is equipped with a condensing gas boiler by Junkers, for heating and warm water supply. But it was delivered with a normal thermostat to control the system. From the beginning I planned to build a smart home, so also the heating system has to become smart. I figured out some options, first tried to realize it with tado, what didn’t work well in my case, and finally came across with the smart thermostat of Junkers, the CT100 (a.k.a. Nefit Easy).
fhem delivers a very easy solution to monitor status changes of your devices and variables using logfiles. The only problem: logfiles are very slow when reading data and need a lot of space. Alternatively you can use a database to log your system. In the following I explain how to set it up. Weiterlesen „fhem DbLog: Database logging instead of Logfiles“