Home automation, Z-Wave, Security

1. FHEM as IoT platform
Thilo Röhl 3-2016, www.pkienthusiast.com

2. Motivation
• Everyone has a smartphone, no one knows how to create things or
develop software
• First Generation of Apple being garage builders
• Smartphone and tablets create a out of the box
• No expertise with making things, creating things
• Even computer science students tend to have virtual expierience

3. The Rasberry Pi
• Invented for School people to educate programming
• Project founded in UK
• Roughly sold 5 Millions (2013)
• Production in UK – moved back from China
• Non Profit Organisation
• Open Design
• Low Power, about 12 € for a whole year

4. Operation System
• Linux
• Open Source
• Invented by Linus Torvalds et al

5. FabLabs
• Open laboratories to fix things
• People want to understand how things work rather than buying new
things
• The makers build their own systems
• Connection and building own things
• Open space, non profit

6. AirPi
• Created by a group of english pupils
• Sensors for air quality, sound, light
• Sourcecode freely available is now
maintained by a english chemistry
phd student
• You get it in single parts to solder
it yourself
• Nonprofit

7. AirPi delivery

8. Adafuit LCD Display
• A simple display to solder for yourself including a plate, an LCD display
and 5 small buttons
• Tutorials with pictures on the webpage how to solder it. Source code
to use the display is freely available

9. Ardafruit LCD Template Delivery

10. FHEM
• Created by Rudolf König / Germany in 2005
• Perl script to be used for home automation, GPL open source
• Module based system, module maintained by anyone active on the
forum
• Very active community
• Independent of cloud or networks

11. Sensors, Events, Actors
• FHEM connects Sensors with different modules creating inside events
using triggers to start actors
• Any Sensor can be freely connected to any Actor
• The perl language allows regular expressions and powerful
combinations
• Local scripts can be executed or web services called
• FHEM instances can be connected to allow a distributed model
• It is possible to connect devices over many different wired or wireless
protocols e.g. KNX, EIB, Homematic, GPIO of the rasberry pi

12. Z-Wave
• Wireless protocol supported by a alliance of vendors
• Z-Wave creates a „secure“ mesh network
• Examples are smoke detectors, water detectors,
wall plugs with sensors and logic

13. Enocean
• Alliance of couple of vendors, based in Munich
• Focus on low-power design
• Switch using the energy of the movement of the finger
• Temperature or window opener use the light

14. Bluetooth LE
• New devices in the market, mainly
for smart phone connections can be
interconnected with FHEM

15. ZigBee
• Used for Philips Hue Lightning, Osram Lightfy
• Tendencies to unfollow open standards
• Security issues according heise *
*http://www.heise.de/security/meldung/Deepsec-ZigBee-macht-Smart-Home-zum-offenen-Haus-3010287.html

16. If you cannot decide…
• Chose an open system !
• FHEM is able to integrate them all
• Consider Home Automation as a journey. Step by step integration,
avoid buying island solutions

17. Base Setup of Rasberry Pi
• Basis setup of pi
• sudo apt-get update
• sudo apt-get upgrade
• sudo raspi-config
• to expand file-system and to setup localisation/keyboard
• date –s „03/08/2016 12:30“
• to setup time. The pi has no clock – use ntp if possible
• In some cases, a kernel update using „sudo rpi-update“ might be necessary. I
had to turn of the device tree using raspi-config to get some device back
working. Do only do this if really necessary 

18. Base setup of FHEM
• http://www.fhemwiki.de/wiki/Raspberry_Pi
• wget http://fhem.de/fhem-5.7.deb
• sudo dpkg -i fhem-X.Y.deb
• Start browser to access local system 127.0.0.1:8083
• Access is possible over smartphone, table and with VPN even remote

19. First update
• FHEM does not support a proxy for updating
• Put update in the command line
• Current perl modules will be download
• „update“ in the browser window
• „shutdown restart“
• „backup“

20. The power of the community
• Users contribute freetime to help others. www.fhem.de
• Resulting scripts are shared and further improved and finally
integrated in FHEM
• They are all having a lot of fun and are creating a deeper
understanding of IT
• Access to basic concepts of IT concepts for the whole community

21. Dummy
• http://www.fhemwiki.de/wiki/Erste_Schritte_in_fhem
• A state variable
• define mySchalter1 dummy
• attr mySchalter1 room Schulungsraum

22. Readingsgroup Battery Status
• define battStatus readingsGroup .*:[Bb]attery
• All Readings with Battery or Battery from all Devices
• Get connectivity overview

23. Dummies with with symbols and colors
• Dummies for alarms, Symbols, On/Off button

24. Zwave battery powered outside sensor
• Temperature, Humidity, Lux, Movement

25. Plotting Outside Temperature/Humidity

26. Readingsgroup Weather Readings

27. Plotting System load – 900 Mhz Throtteling

28. Plotting Bluetooth Presence

29. notify
• Notify triggers because of an event.
• A notify can trigger an SMS over a USB SIM Stick or a pushover app
message or an email
• define b3lampV1 notify btn3 set lamp $EVENT
• define b3lampV2 notify btn3 { fhem "set lamp $EVENT" }
• define b3lampV3 notify btn3 "/usr/local/bin/setlamp "$EVENT"“
• define n_mySchalter1_on notify mySchalter1:on set myLampe1 on

30. at
• At triggers something depening on a time
• define a1 at 17:00:00 set lamp on # fhem Befehl
• define a2 at 17:00:00 { Log 1, "Teatime" } # Perl Befehl
• define a5 at +00:00:10 set lamp on # Start in 10 secs
• define a12 at +*{sunset_rel()}
{ fhem("set lamp on-till 23:00") if($we) } # Only Weekends
before sunset

31. Notify for Smoke Alarm

32. Combine any input with any output
• Everything in FHEM can be combined regardless of the proctol
connecting to the outside
• If you are not satisified with a current solution, integrated you own
and show the example to the community

33. Combine Cloud Services
• Use the cloud to archive data, visualise data, trigger actions
• Useful when you need more power, more storage or a long term data
qualitiy
• Examples are ubitdot as general IOT data collector, netatmo as
weather service, Amazon as storage provider or Pushover as mobile
messaging service

34. Create installation short manuals
• E.g. Freeradius base config
• apt-get install freeradius libfreeradius2 freeradius-common freeradius-utils
• Installs packages, depening packages, start scripts (service freeradius start/stop) and start the
service
• add new client to :
• /etc/freeradius/clients.conf
• client 192.168.1.0/24 {
• secret = radiustest
• shortname = Testnetz
• }

35. And no go ahead and play with it 
• Rasberry Pi Setup
• https://www.raspberrypi.org/documentation/installation/installing-images/
• Zwave
• Example devices taken from www.fibaro.com, www.aeotec.com, www.popp.eu
• Enocean
• Example devices taken from www.nodon.fr
• Bluetooth
• Example devices taken from www.parrot.com/flowerpower, www.playbulb.com