Monday, 31 October 2016

find my iphone using amazon dash button openhab

Using Amazon Dash Button and OpenHab2 to find my iphone

2.0.0-SNAPSHOP build #560
instructions as per

follow install pcap4j, including permissions for running as non-root:

then for the java path I did
whereis java
then ls -l /usr/bin/java
ls -l /etc/alternatives/java

setcap cap_net_raw,cap_net_admin=eip /usr/lib/jvm/java-8-oracle/jre/bin/java

started openHAB script
sudo su -s /bin/bash -c '/opt/openhab2/' openhab

let it run 15 mins - check GUI ok, then restarted it

on my router, I noted down all current DHCP leases, then followed the dash button setup until the point of choosing button, then stopped, then looked for new DHCP lease and found the MAC address AC-63-BE-XX-XX-XX, gave it a fixed IP assignment then blocked it in the router firewall for WAN access.

enable amazon dash binding in Paper UI - click install

when happy, press the button and the Dash button appears as a Thing in inbox!
click the tick in the Inbox to add the dash button as a Thing.
make a note of the CHANNEL that the dashbutton publishes its events to, something like

Now you can just add a rule in /opt/openhab2/conf/rules
sudo nano dashbuttons.rules

rule "Dash button pressed" when Channel "amazondashbutton:dashbutton:ac-63-be-xx-xx-xx:press" triggered then
println("The Dash button has been pressed") end

change owner to openhab as per the install guide,

sudo chown openhab:openhab dashbuttons.rules

What got me was that the usual approach of Thing < -- bind with channel --> Item isn't followed. The dash button is a pure Thing with channel trigger - no Item to bind to - no Item State/Command to run in a rule

Discussion here:

Now, get the PHP 'find my iphone' library
as per
(adapted for OH2)
cd /opt/openhab2/conf/scripts
sudo git clone git://
sudo cp PHP-FindMyiPhone/class.findmyiphone.php .
UPDATE Jan 2017 - ensure you use version of pull request 12th Jan 2017 or later as API has changed.

You may also need to install/configure PHP for SSL certificates

edit php.ini and add/uncomment line

then download the and save to above store.
If on windows, then replace with something like

sudo wget --no-check-certificate
sudo wget --no-check-certificate
sudo wget --no-check-certificate

#Edit listiclouddevices.php with your iCloud username (email) and password

cd /opt/openhab2/c
sudo nano listiclouddevices.php

#Run it to find your deviceID
#DeviceID will be something like Eu4EGWK1Yt5+2JtKM7YNA++hxNtDw4ZzZuwT9BLxYcL2d7FaULCJMuHYVNSUzmXV<
php ./listiclouddevices.php

#Edit turnoniphone.php, turnoffiphone.php
#with username, password and deviceID
sudo nano turnoniphone.php
sudo nano turnoffiphone.php

#Run scripts to test
php ./turnoniphone.php
php ./turnoffiphone.php

Permissions are a sticky point.
After creating php scripts, I changed all files in openhab2 to be owner:openhab, group openhab
for the manual install, this is
sudo chown -hR openhab:openhab /opt/openhab2

I also added my linux user to the group openhab, for ease of editing:
sudo usermod -a -G openhab myusername

Sunday, 30 October 2016

Openhab2 beginner's guide

my own hints for starting from scratch with openhab2 - not a step-by-step guide!

openhab2 installation location  (ubuntu 14.04)

depends on whether you manually install or install from repo:

openhab 1 bindings in openhab2?
in 2.0.0.B4+ (and probably earlier) the 1.x compatibility binding is already enabled.
Copy your 1.x .jar file into /opt/openhab2/addons.
Create/edit /opt/openhab2/conf/Services/openhab.cfg and add your 1.x binding configuration there
check the Karaf log or openhab.log for any issues.

lightwaverf binding openhab2

SEE DEDICATED POST LATER IN BLOG - requires nightly build 1.9.0 of addon.

get openhab1 lightwaverf binding from github
copy the openhab binding lightwaverf into /usr/share/openhab2/addons
I did this via filezilla local sftp to my linux box, having first done:
#add my username to the openhab group  (replace myusername as needed)
sudo usermod -a -G openhab myusername
# give the openhab group permissins to the addons folder
sudo chmod g+rws usr/share/openhab2/addons

then I can unzip on windows the 1.8.3 - move the lightwaverf jar across to usr/share/openhab2/addons

at this point, my lightwaverf hub asked immediately to authorise the app - I did nothing else - no config yet!

in /etc/openhab2/services, create file openhab.cfg
copy the supplied lightwaverf config into it, i.e. from

now I'm stuck - not available in bindings in Paper UI - error in log about lightwaverf missing addBinding method...

openhab2 console

- for checking the 1.x compatibility layer is installed - it was by defulat

More up-to-date openhab1 binding for lightwaverf available from openhab nightly build: