Rasperry Pi Rasbian Linux, Ubuntu and Windows 10 Python Azure IoT hub Sensor Streaming Samples

As at September 2016 samples are built on Azure IoT SDK 1.0.15.

1. Raspberry Pi Zero, Raspbian Kernel 4.4 fully patched
   • Python 3.4
   • Enviro pHAT for temperature, barometric, and light sensing
2. Raspberry Pi 2 and 3. Tested on Raspbian Kernel 4.4 fully patched
   • Python 3.4
   • Raspberry Pi Sense HAT
3. Windows (10) Subsystem for Linux Python 3.4
   • Python 3.4
   • Open Weather Map Data
4. Windows 10
   • Python 3.5
   • Open Weather Map Data

The samples include the compiled iothub_client.so library for ARM V6 (Pi Zero), V7 (Pi 2 and 3) and Ubuntu X64. But you still need to install the Azure SDK Python prerequisites.

Follow these steps to install the Azure SDK Python prerequisites :-

git clone --recursive https://github.com/Azure/azure-iot-sdks.git
cd azure-iot-sdks/python/build_all/linux/
./setup.sh --python-version 3.4

No additional software required.

To compile your own iothub_client.so library follow these instructions.

Note you should allocate in the order or 5 to 6 hours to compile the Azure IoT SDK on the Raspberry Pi Zero.

1. Increase Raspberry Pi Swap File size - see notes below
2. Overview of preparing your Python Development Environment
3. Compile Azure IoT Device SDK for C
4. Compile Azure IoT Python Libraries

1. To find your Raspberry Pi on your network by name install Apple Print Bonjour Service on Windows for mDNS UNIX Name Resolution. .
2. My favourite SSH and SFTP Windows Client is Bitvise
3. Visual Studio Code for Windows, Mac and Linux

1. For Windows Remote Desktop Connection Support

   sudo apt-get install xrdp

Raspberry Pi Zero – Programming over USB ONLY works with Raspberry Pi Zero and provides a quick easy way to connect your PC to your Raspberry Pi Zero.

To compile Azure SDK on the Raspberry Pi you will almost certainly need to temporarily increase the size of the swap file. See How to change Raspberry Pi's Swapfile Size on Raspbian

Be sure to change the swapfile size back to the default after the SDK has been compiled.

sudo nano /etc/dphys-swapfile

The default value in Raspbian is:

CONF_SWAPSIZE=100

Change this to:

CONF_SWAPSIZE=2048

Save changes

sudo /etc/init.d/dphys-swapfile stop
sudo /etc/init.d/dphys-swapfile start

free -m

The output should look like:

total     used     free   shared  buffers   cached
Mem:           435       56      379        0        3       16
-/+ buffers/cache:       35      399
Swap:         1023        0     1023

Be sure to change the swapfile size back to the default after the SDK has been compiled.