YOUR OFFICIAL RASPBERRY PI MAGAZINE

Tutorial
WALKTHROUGH
This project requires quite a lot of software setup
before you can go ahead and use it.
The radio module uses the Raspberry Pi’s SPI
interface, which needs to be enabled, so run raspiconfig
using the command:
sudo raspi-config
Scroll down to the Advanced option, select it, and
then select SPI. Enable it, and when asked if you want
This code is all in C++ but can be
called from our Python program
the SPI module to load automatically, say Yes.
Next, you need to install and build the NRF24 library
for the RF module by issuing the following commands:
git clone https://github.com/TMRh20/RF24
cd RF24
make all
sudo make install
After that, you need to download a messaging
library that provides a higher-level interface to the
basic RF module using the following commands:
cd ..
wget http://torsten-traenkner.de/wissen/
smarthome/openmilight_raspberry_pi.tgz
tar xzvf openmilight_raspberry_pi.tgz
This code is all in C++ and so that we can make use
of it in Python, your expert has written a C++ program
called send_cmd, which is designed to be called from
Python with a command message to be sent to the
Mi‐Light. Download this program and the Python code
for the project from your Pi’s command line, using:
git clone https://github.com/simonmonk/
pi_magazine.git
Copy all the files in the project folder 11_mi_light
into the openmilight folder, and then compile two of
the programs by using the commands:
cp pi_magazine/11_mi_light/* openmilight
cd openmilight
sh ./comp.sh
You also need to install the Python Bottle library that
will be used for the web server, using the command:
sudo apt-get install python-bottle
Below Turn light
zones on/off from a
phone browser
cd ..
git clone https://github.com/mysensors/Raspberry
cd Raspberry
make
sudo make install
Now download the code that Torsten Tränkner wrote
using the following commands:
Before you can run the main program, you need to
find the ID of the Mi-Light remote that you used to
pair with the Mi-Light so that your Raspberry Pi can
impersonate it.
Run the program openmilight using the command
below, and then press the On button for Zone 1 on
the remote a couple of times. Each time you press
the button, you should see a stream of hexadecimal
number like the ones in the example below.
sudo ./openmilight
in listening mode
B0 A1 56 41 C1 03 72 .
B0 A1 56 41 C1 03 73 .
The first three digits (in this case B0, A1, and 56)
will be different for your remote, so quit the program
using CTRL+C and edit the file lights.py, changing the
value of the ID variable at the top of the file to be the
three hex digits for your remote.
Finally, you are ready to fire up the web server using
the following command:
sudo python lights.py
Point a convenient web browser at the IP address of
your Raspberry Pi and you will see a webpage with On
and Off buttons for all four zones. Click the buttons
for Zone 1 and you should be able to turn all the lights
connected to that zone on and off.
44 January 2016
raspberrypi.org/magpi