Installing FHEM on the Raspberry Pi

FHEM on the Raspberry Pi (Rasp Pi) acts as a control center for the automated home. To control sensors and actions with this open source software, you need suitable hardware. The Rasp Pi 2 and 3 models (RPi2/3) immediately come to mind because of their performance and frugal power consumption. The installation steps presented in this article are based on the precondition that you have already installed a Raspbian "jessie" image [1] on a microSD card of at least 8GB.

To complete any necessary preparatory work, you should connect the Rasp Pi to a power supply and the Internet. If you are working without a display screen, you can verify that the computer has booted by paying attention to the LEDs. During the boot process, all of the lights (orange, green, red) should light up. After a successful start, only the red light will be remain on. If the Rasp Pi does not start properly or if you have a problem, you should install the image again.

Finding the Rasp Pi

Now you need to find the Rasp Pi's IP address for use in the future home control center. Raspbian displays it on the screen shortly before finishing the boot process, but the router web interface is the easiest place to find the address, which the router usually assigns by DHCP, when no display is available (also see the "ARP" box).

[...]