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IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

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Title: IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX
Author: Wall's Corners
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We all have at some point of life desired to control everything at the click of a button. May it be turning off unnecessary lights when you ...

<p>We all have at some point of life desired to control everything at the click of a button. May it be turning off unnecessary lights when you are not at home to detecting intruders when you are not around. This tutorial will guide you to build a simple <a href="http://bit.ly/1WT6RcI" itemprop="url" target="_bank" title="Raspberry Pi GPIO Pins and Python"><strong>raspberry</strong></a> pi home automation system that will allow you to control appliances in your home from anywhere in the world. And it will also allow you to view data from the PIR motion sensor via the internet to detect intruders. This project will be using platforms like the Raspberry Pi, IBM’s IoTF (Internet of Things Foundation) and Bluemix packages. And can be used as a perfect project to get into the world of Internet of Things. So lets get started!</p>
<p>What are the stuff required to do this project?</p>
<p>Hardware:</p>
<p>Raspberry Pi 2 / B+.<br />
USB wifi dongle.<br />
USB keyboard and mouse.<br />
HDMI monitor and cable.<br />
Micro USB power adapter (smartphone charger).<br />
PIR motion sensor.<br />
Male-female and male-male jumpers.<br />
Breadboard.<br />
BC547 transistor.<br />
5V SPDT relay and 1n4001 diode.<br />
<a href="http://bit.ly/1WT6RcH" itemprop="url" target="_bank" title="LED"><strong>LED</strong></a> and 220Ohm resistor.<br />
Software:</p>
<p>Raspbian OS</p>
<p>How does it work?</p>
<p>If you are a beginner to Raspberry Pi, you can always use our free eBook to learn how to setup the pi and Raspbian OS. The Raspberry Pi home automation system uses client and server side <a href="http://bit.ly/1TqSFlj" itemprop="url" target="_bank" title="python"><strong>python</strong></a> scripts. These can communicate with each other through IBM’s IoTF platform. This whole Internet of Things project can be divided into two parts:</p>
<p>1. Sending commands to the Raspberry Pi<br />
The server side script running on our laptop or on a web server takes input commands from the user and correspondingly sends it to the client (Raspberry Pi). Here, we will be using commands to turn a <a href="http://bit.ly/1VNpzU4" itemprop="url" target="_bank" title="light"><strong>light</strong></a> ON/OFF. When we pass the command to turn ON a light through the server side script, the information is relayed to the Raspberry Pi and it’s <a href="http://bit.ly/26nCnnf" itemprop="url" target="_bank" title="GPIO"><strong>GPIO</strong></a> pin turns ON a relay. The system also sends status updates to the server on whether the light is ON/OFF. 2. Receiving data from the Raspberry Pi<br />
In case of sending data from the PIR motion sensor connected to the Raspberry Pi, we run a script which reads the sensor through a GPIO pin and broadcasts the data through the IoTF platform. This can then be viewed through the IoTF console or through a custom web application designed using the platform.</p>
<p>A few quick reads that will help you before you get started:</p>
<p>The concepts of using IBM IoTF http://bit.ly/1sdzFkA<br />
Creating applications using bluemix: documentation.<br />
Interfacing Raspberry Pi with an accelerometer sensor: IBM blog.<br />
Step 1: Testing IBM IoTF using a simulator<br />
First you need to sign up for a one month free trial account from IBM:http://bit.ly/1Z45ff1. You can do that by going here. Next you need to log into: IBM IoTF page with the credentials you just created. And then you need to click on “Quickstart” from the above menu. Next, click on: “Find out more” from the “Don’t have a device?” section:<br />
Then from the new window that pops up, follow the instructions to setup the simulator or just click this link: “http://bit.ly/1sdzYvL“.</p>
<p>This simulator acts like the data coming from your Raspberry Pi or any other connected device, it simulates data like: temperature, humidity, etc. The simulator open up in a new tab and looks like a smartphone application:</p>
<p>Next, copy the MAC address from the top right corner of the simulator. Here, in this example it is: DD:2D:36:E1:C0:17. Now, paste this MAC address on the IoTF quickstart page: http://bit.ly/1Z45ff1 or just click on the MAC address itself. You can see the data coming from the simulator in this new tab in the form of a graph. Now go back to the simulator and click on the UP/DOWN arrows on it to increase/decrease the value of temperature. And you will get to see that the graph on the quickstart page updates accordingly, and at the bottom of the page you will see the current value of temperature you have set.<br />
Step 2: Adding the Raspberry Pi to IBM IoTF</p>
<p>The next step is to add our Raspberry Pi device to IBM IoTF platform, so that it can recognise it. In order to do this, you need to create a device ID for the pi. To do that, check the instructions on this page under the heading: “Connect (Quickstart)“: http://ibm.co/1Z44ylW. After installing the packages using the commands on the instructions page, find the device ID of your pi using this command in the terminal:<br />
“service iot getdeviceid”. Note down the device ID.</p>
<p>Next log into the Bluemix console: http://bit.ly/1sdztlo then click on “Add Service” or “Use Service”.</p>
<p>After that scroll down to find and select the “Internet of Things” boilerplate or icon.</p>
<p>Next, assign a name for this project and click “Create”.</p>
<p>Now from the new page, click on “Launch Dashboard”. And follow the steps below.</p>
<p>FYI – From next time onwards, you can just log into the IoTF page and click on the top right account section. A dropdown will come up, from there you will see “My organizations”. Click on the that,which will take you to a new page.</p>
<p>Now, after launching the dashboard, select “Devices” from the above tabs. Then click on “+Add Device” from the page. Fill in the name of your device (anything that you want to name it) and then enter the device ID you got from the earlier steps. After doing this, you will get a Token id, please note it down or take a screenshot of the window. You will be using this Token id to create a configuration file.</p>
<p>Now, you can view the data coming from your pi (CPU temperature, etc) when you enter the device ID of your pi on the quickstart page. And you can also see it from the “Devices” section on your account page. Just click on the “+” symbol in the “Last Event” column to view the incoming data. Click on each of them, to see the data in detail:<br />
Next you have to follow the steps listed under the heading: “Connect (Registered)” on this page: http://ibm.co/1Z44ylW. This will initialise your Raspberry Pi with details like Organization id, Device id, Token, etc so that we can communicate with it through other applications.</p>
<p>Step 3: Get the API key<br />
Now you need to create an API key for the Raspberry Pi, so that we can read data from it through other external applications. Click on the “API Keys” tab on your organisation page and click on “New API Key”. Note down the key and authentication token that is generated, this will be shown only one time, so note it down or take a picture.</p>
<p>Step 4: Assembling the components together for the Raspberry Pi home automation system</p>
<p>Based on the above connection diagram, connect the components for the Raspberry Pi home automation system. You can learn more about connecting relays here, if you are a beginner. And you can find the pin out for the BC547 transistor here. Also, check out the pin out for the Raspberry Pi here. You can connect the appliance you wish to control to the relay as shown above. One line of the light/bulb should be connected directly to power and the other line through the relay. You can use the relay guide link given above as a guide. We are using mainly three GPIO pins, which are used as follows:</p>
<p>GPIO pin 3: To provide the control signal to BC547 which in turn activates the relay.<br />
GPIO pin 7: To monitor the status (ON/OFF) of the appliance connected to the relay.<br />
GPIO pin 11: To provide the status for intruder detection via the PIR motion sensor (0/1).<br />
Step 5: Setting up the client and server side <a href="http://bit.ly/1UhAZOh" itemprop="url" target="_bank" title="How to Build a Basic Web Crawler in Python"><strong>python</strong></a> scripts for the Raspberry Pi home automation system<br />
You can clone or download the python scripts for this project from here:http://bit.ly/1sdAbPi. But, please note that you have to edit both these scripts with your organisation/device details. Next, log into your Raspberry Pi and open the terminal and follow these steps:</p>
<p>cd /home/pi<br />
git clone http://bit.ly/1sdAbPi</p>
<p>client1.py<br />
The git clone will copy the folder “IoT” from github to the pi. Next, you need to go inside that folder and edit the python script called: “client1.py”. You can use the nano editor within the terminal to add the details about your organization, deviceType, etc. So do the following commands:</p>
<p>cd /home/pi/IoT<br />
nano client1.py</p>
<p>Go to the lines in the editor which asks for organization id, device type, etc and fill in the details. You can view these details by using this command in a new terminal window:</p>
<p>service iot getdeviceid</p>
<p>After updating your client1.py python script with all the information,</p>
<p>server1.py<br />
next we need to do the same for the server1.py script. So open your laptop and clone the code files (git clonehttps://github.com/DIYhacking/IoT.git or just download it from the link) and open the editor for server1.py and add all the details about the organization, etc just like earlier for the pi. But, here there is an additional information that needs to be filled in. You also have to fill in the details of the API key (authkey and authtoken). You can get this information from Step3.</p>
<p>After performing the above steps, next we need to install the python IoTF packages for running the server1.py script on the laptop/webserver. To install that, perform this command:</p>
<p>pip install ibmiotf</p>
<p>You also need to check if your system has “pip” installed, if it isn’t you need to install it based on your OS.</p>
<p>For linux–> sudo apt-get install python-pip<br />
For mac–> sudo easy_install pip<br />
For windows–> Check this tutorial.</p>
<p>Step 6: Running and executing the Raspberry Pi home automation system<br />
Finally, we can execute the system for running our raspberry pi home automation project. Follow the instructions for executing and viewing the output here:</p>
<p>First we need to stop the default IoT service running on the pi, use this command to do that:<br />
sudo service iot stopNext, run the script on the pi using:<br />
sudo python client1.pyAnd then from the laptop, run the server side script:<br />
sudo python server1.py</p>
<p>We will be able to do two things with this system:</p>
<p>See whether there are any intruders using the PIR motion sensor and check whether a light is ON/OFF from a internet connected device.<br />
Control an appliance/light using a remote device connected to the internet.<br />
1. Checking the PIR motion sensor data and light status sent from the Raspberry Pi</p>
<p>Here we are following the same steps we used in Step 2. To do this, log into your IBM IoTF account using the same link we used earlier: http://bit.ly/1Z45hn4. Next, click on your account section on the top right corner and click on your organization (check out the pictures in Step2). Then, click on the “Devices” tab and next on the “+” symbol in the “Last Event” column. You will see the data being updated and on click each of those data rows, you can see the data in detail, showing the Light and Intruder status (0/1) from the Raspberry Pi home automation system:</p>
<p>2. Controlling an appliance by turning it ON/OFF using the server side script</p>
<p>Now execute your server side python script on your laptop. You can use the command:<br />
sudo python server1.pyThis script will then ask for commands, like so:</p>
<p>You can use two commands to control a lamp:<br />
To turn it ON: lighton<br />
To turn it OFF: lightoff</p>
<p>Type in “lighton” and hit enter, you will see that in a few seconds the relay and LED connected to the Raspberry Pi home automation system gets activated. Whatever appliance you had connected to the relay will be turned ON. And on the terminal of your laptop you will see the data generated from the Raspberry Pi like in the picture above.<br />
Next, enter the command “lightoff” to disable the relay and LED and correspondingly your appliance turns OFF.</p>
<p>Potentially, you can create a webpage and a HTML button and run this script when the button is clicked to control appliances through online webpages. Check out python and HTML integration to do that. And you will be able to control appliances in your home from any part of the world.So thats it guys, I hope you guys come up with really cool project ideas to make use of this powerful platform from IBM. And you can post your suggestions and queries in the comments section below <img alt=":)" class="wp-smiley" src="http://bit.ly/1VNqWSO" style="height: 1em; max-height: 1em;" /> Now check out a video showing the demo of the raspberry pi home automation system:</p>
<p><iframe width="678" height="381" src="https://www.youtube.com/embed/8xS8cP-PWM8?feature=oembed" frameborder="0" allowfullscreen=""></iframe></p>
<p> </p>
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IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

We all have at some point of life desired to control everything at the click of a button. May it be turning off unnecessary lights when you ...

IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

Wall's Corners

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Title: IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX
Author: Wall's Corners
Rating 5 of 5 Des:

We all have at some point of life desired to control everything at the click of a button. May it be turning off unnecessary lights when you ...

IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

We all have at some point of life desired to control everything at the click of a button. May it be turning off unnecessary lights when you ...

Raspberry Pi WiFi Radio

Wall's Corners

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Title: Raspberry Pi WiFi Radio
Author: Wall's Corners
Rating 5 of 5 Des:

Overview Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpo...

<div class="page-title-wrapper">
<h1 class="headline"><span id="overview">Overview</span></h1>
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<div class="row-fluid build-text">Raspberry Pi, the little <i>wonder-puter</i> that’s taken the world by storm, is so affordable that we can create nifty single-purpose “appliances” around them without shame. Here’s our take on one of the more popular such applications: internet streaming media, the <i>Pandora</i> music service specifically.</div>
<div class="row-fluid build-text"></div>
<div class="row-fluid build-text">With the addition of a small <a href="http://ift.tt/22InUQ2" itemprop="url" target="_bank" title="LCD"><strong>LCD</strong></a>, a few buttons and a USB wireless network adapter, the <a href="http://ift.tt/1o7SsLh" itemprop="url" target="_bank" title="Raspberry"><strong>Raspberry</strong></a> Pi becomes an affordable self-contained music streamer that can be moved to any room of the house…wherever you need your tunes at the moment. Just connect power and speakers or headphones.</div>
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<div class="page-title-wrapper">
<h1 class="headline"><span id="parts-list">Parts List</span></h1>
<div class="author"><span id="required-parts" class="anchor-link-target"></span>Required Parts:</div>
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<div class="row-fluid build-text">
<ul>
<li><a href="http://ift.tt/VUZnZs" target="_blank">Raspberry Pi</a> board (any model or revision). This project has modest requirements and is a great use for older “hand-me-down” Pi boards.</li>
<li>Adafruit LCD+Keypad Kit for Raspberry Pi. There are a few different versions of this, depending on the “look” you’re after: <a href="http://ift.tt/1ama1hc" target="_blank">RGB Positive backlight</a>, <a href="http://ift.tt/16UnsT2" target="_blank">RGB Negative</a>, and the more affordable <a href="http://ift.tt/1lXwoj5" target="_blank">Blue & White</a>. <strong>All versions of this kit require some assembly and soldering.</strong></li>
<li>A 2GB or larger <a href="http://ift.tt/SFYUCz" target="_blank" title="Link: http://ift.tt/SFYUCz">SD memory card</a> (microSD for most recent Raspberry Pi boards).</li>
<li>A power supply compatible with the USB MicroB connector on the Raspberry Pi; some mobile phone chargers will work, or we offer suitable <a href="http://ift.tt/PYNQnh" target="_blank">USB “wall wart” adapters</a> and<a href="http://ift.tt/SFYUSN" target="_blank">cables</a>.</li>
<li>Headphones or amplified speakers (or connect to your living room A/V setup).</li>
<li>A free account with the <a href="http://www.pandora.com/" target="_blank">Pandora</a> streaming music service.</li>
</ul>
</div>
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<h2><span id="optional-but-recommended" class="anchor-link-target"></span>Optional but Recommended:</h2>
<ul>
<li>A <a href="http://ift.tt/1jfhuRs" target="_blank">USB WiFi adapter</a> compatible with the Raspberry Pi (and an existing wireless network, of course). The Raspberry Pi Model B could be used with wired Ethernet, but this makes it less convenient.</li>
<li>A <a href="http://ift.tt/K5r25r" target="_blank" title="Link: http://ift.tt/K5r25r">Pi Box enclosure</a>, or other case with an open top (the Pibow and Pi Shell aren’t suitable — we need full access to the top of the board).</li>
</ul>
</div>
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<h2><span id="temporary-items-for-setup" class="anchor-link-target"></span>Temporary Items for Setup:</h2>
<p>The following are required for assembly and configuration, but do not need to remain permanently attached:</p>
<ul>
<li>Monitor (HDMI or composite)</li>
<li>USB keyboard</li>
<li>Possibly a powered USB hub</li>
<li>Soldering iron and solder (for assembling the <a href="http://ift.tt/1WLPAjh" itemprop="url" target="_bank" title="LCD"><strong>LCD</strong></a> keypad kit)
<div class="page-title-wrapper">
<h1 class="headline"><span id="raspberry-pi-setup-1-of-3">Initial System Configuration</span></h1>
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<p>This project works well with the new <a href="http://ift.tt/1LIxY7j" itemprop="url" target="_bank" title="Raspbian"><strong>Raspbian</strong></a> “Jessie Lite” distribution; it fits easily on a 2 GB card with room to spare. Start with that! <em>Do not</em> use the non-lite Jessie image, it’s enormous and contains a ton of things we don’t need for this.</p>
<h2><span id="raspberry-pi-downloads-page" class="anchor-link-target"></span><strong><a href="http://ift.tt/1JdjokA" target="_blank">Raspberry Pi Downloads Page</a></strong></h2>
<p>While that’s downloading, you can work on <strong><a href="http://ift.tt/22N0iNv" target="_blank">assembling the LCD kit</a></strong>.</p>
<p>If you’re new to Raspberry Pi and Linux, we strongly suggest working through the first few guides in the <a href="http://ift.tt/1iVdpQk" target="_blank"><strong>Learn Raspberry Pi</strong></a> tutorial series…know how to “burn” an SD image, perform a first-time setup and get the Raspberry Pi connected to a network. Some familiarity with one of the text editors (such as the simple <em>nano</em> or the more daunting <em>vi</em> or <em>emacs</em>) is also recommended.</p>
<p>Install the Raspbian Jessie Lite image on a <strong>2GB or larger</strong> microSD card. You’ll need to connect a <strong>monitor</strong> and <strong>USB keyboard</strong> for basic system configuration, but this is only temporary…we’ll set it up to run “headless” later. For networking, connect either an Ethernet cable or a USB WiFi adapter.</p>
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<p><strong>At this point you should have an SD card containing the Raspbian Jessie Lite software, and an assembled LCD “Pi Plate.”</strong></p>
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<p>You don’t need to install the LCD Plate atop the Pi yet, we’ll do that later. Let’s just get the basics set up.</p>
<ol>
<li>Connect a monitor and <a href="http://ift.tt/1Uhpirf" itemprop="url" target="_bank" title="install virtual keyboard raspberry pi"><strong>keyboard</strong></a> to the Raspberry Pi.</li>
<li>Insert the SD card containing the Raspbian OS.</li>
<li>Connect a “Micro B” USB cable to the power connector on the Raspberry Pi.</li>
<li>Plug the other end of the USB cable into a power source: a mobile phone charger, a powered USB hub, or simply a USB port on your computer.</li>
</ol>
<p>The Raspberry Pi should now boot, and you’ll see the monitor fill with lots of “Unix stuff.”</p>
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<div class="alert">Linux can be daunting to the uninitiated. Don’t worry about messing something up…if all else fails, you can re-format the SD card and begin again.</div>
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<p>On first boot, you’ll get a login prompt. Log in as user “pi,” password “raspberry”.</p>
<p>Once you’re logged in successfully and have a command-line prompt, run the system configuration utility:</p>
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<li class="L0"><span class="pln">sudo raspi</span><span class="pun">–</span><span class="pln">config</span></li>
</ol>
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<p>The following selections are <strong>required</strong>:</p>
<ul>
<li>Expand Filesystem</li>
<li>Enable <a href="http://ift.tt/1WLPB6O" itemprop="url" target="_bank" title="I2C"><strong>I2C</strong></a> (under “Advanced Options”) and load I2C kernel module by default.</li>
</ul>
<p>The following are <strong>optional</strong>, but <strong>strongly recommended</strong>:</p>
<ul>
<li>Change User Password (because everybody knows the default).</li>
<li>Under “Internationalisation Options,” select “Change Locale,” “Change Timezone” and “Change Keyboard Layout” to suit your location. If your keyboard isn’t producing the expected symbols, this is why.</li>
<li>Change Hostname (under “Advanced Options”). I named mine “<strong>pandora</strong>” to distinguish it from other Raspberry Pi systems on the network.</li>
<li>Enable SSH (also under “Advanced Options”). This allows remote login from another system on the network, for performing administration tasks without a display attached.</li>
<li>You can disable Overscan (Advanced Options) if you like — we’ll reboot a few times during the setup process, and this provides a little extra screen real estate on HDMI monitors.</li>
</ul>
<p>Tab over to the “Finish” button, press Return and confirm you’d like to reboot the system when prompted. You’ll need to log in again, using the password you established above.</p>
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<div class="alert">Several configuration files will now be edited. Our examples show the “nano” text editor being used, as it’s easiest for the uninitiated. Power users can substitute “vi” or their editor of choice.</div>
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<h2><span id="configure-wireless-networking" class="anchor-link-target"></span>Configure Wireless Networking</h2>
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<p>First, edit the WPA Supplicant configuration file:</p>
<p><strong>sudo nano /etc/wpa_supplicant/wpa_supplicant.conf</strong></p>
<p>The “network” section should be modified as follows:</p>
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<li class="L0"><span class="pln">ctrl_interface</span><span class="pun">=</span><span class="pln">DIR</span><span class="pun">=</span><span class="str">/var/</span><span class="pln">run</span><span class="pun">/</span><span class="pln">wpa_supplicant GROUP</span><span class="pun">=</span><span class="pln">netdev</span></li>
<li class="L1"><span class="pln">update_config</span><span class="pun">=</span><span class="lit">1</span></li>
<li class="L2"><span class="pln">network</span><span class="pun">={</span></li>
<li class="L3"><span class="pln">ssid</span><span class="pun">=</span><span class="str">“WIFI_NAME_GOES_HERE”</span></li>
<li class="L4"><span class="pln">psk</span><span class="pun">=</span><span class="str">“WIFI_PASSWORD_GOES_HERE”</span></li>
<li class="L5"><span class="pln">scan_ssid</span><span class="pun">=</span><span class="lit">1</span></li>
<li class="L6"><span class="pun">}</span></li>
</ol>
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<p>Edit the <span class="editor-monospace">ssid</span> and <span class="editor-monospace">psk</span> strings to match your WiFi network name and password.</p>
<p>Make sure those lines in the <span class="editor-monospace">network</span> section are indented using tabs, not spaces. It seems to be quite picky about formatting.</p>
<p>If using a WiFi adapter based on the popular Realtek 8192CU chipset, disabling WiFi power management seems to help with reliability:</p>
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<ol class="linenums">
<li class="L0"><span class="pln">echo</span> <span class="str">“options 8192cu rtw_power_mgnt=0 rtw_enusbss=0”</span> <span class="pun">|</span> <span class="pln">sudo tee</span> <span class="pun">—</span><span class="pln">append</span> <span class="pun">/</span><span class="pln">etc</span><span class="pun">/</span><span class="pln">modprobe</span><span class="pun">.</span><span class="pln">d</span><span class="pun">/</span><span class="lit">8192cu</span><span class="pun">.</span><span class="pln">conf</span></li>
</ol>
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<h2><span id="enable-i2c-support-for-the-lcd" class="anchor-link-target"></span>Enable I2C Support for the LCD</h2>
<p>The LCD doesn’t need to be attached yet, but we can get some setup started…</p>
<p><strong>sudo nano /etc/modules</strong></p>
<p>Add these two lines if not already present:</p>
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<li class="L0"><span class="pln">i2c</span><span class="pun">–</span><span class="pln">bcm2708</span></li>
<li class="L1"><span class="pln">i2c</span><span class="pun">–</span><span class="pln">dev</span></li>
</ol>
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<h2><span id="optional-enable-usb-audio" class="anchor-link-target"></span>Optional: Enable USB Audio</h2>
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<p>If you plan to use this with a USB Audio Adapter, <a href="http://ift.tt/17HBgju" target="_blank">this guide explains the process</a>. It’s pretty straightforward, a matter of editing one line in a file.</p>
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<h2><span id="reboot" class="anchor-link-target"></span>Reboot</h2>
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<p>Finally, shut down the system:</p>
<p><strong>sudo shutdown -h now</strong></p>
<p>Wait for the system to report that it’s halted before disconnecting power. It should take about 20 seconds.</p>
<p>Following shutdown, insert the WiFi adapter and re-connect power (keep the monitor attached for now).</p>
<p><strong>Is using a Model A board:</strong> you’ll need to remove the keyboard to plug in WiFi, or use a powered USB hub temporarily during setup. Without a hub, <strong>ssh</strong> is now the only way into the system…so if WiFi isn’t working, you’ll need to unplug the adapter, connect a keyboard and check the WiFi configuration.</p>
<p><strong>For all other boards:</strong> keyboard can stay attached until you know the networking is properly configured. Log in again and you should be able to access the outside world now:</p>
<p><strong>sudo ping adafruit.com</strong></p>
<p>Do not proceed until internet access is working. If WiFi refuses to cooperate, make sure every step above has been followed carefully. If you’re trying to use a hidden network and it just won’t play nice, change the router configuration to broadcast the network name.</p>
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<p>Raspbian Jessie Lite includes the “avahi” package by default, so the system appears on the network as “pandora.local” (or whatever hostname you configured) instead of a numeric IP address. You can easily access the Raspberry Pi remotely using an ssh client from another system on the network. For example, using the Terminal application in Mac OS X, one would type:</p>
<p><strong>ssh pi@pandora.local</strong></p>
<p>You should get a password prompt. Once logged in, you can perform all administration duties remotely (including the steps that follow), and the monitor and keyboard are no longer needed on the Raspberry Pi. It’s easier this way because you can cut-and-paste all the commands with their weird syntaxes.</p>
<div class="page-title-wrapper">
<h1 class="headline"><span id="raspberry-pi-setup-2-of-3">Install Software Packages</span></h1>
<div class="author"></div>
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<div class="page-content">
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<div class="alert">Wireless networking MUST be working before continuing. If your Pi is not on the network yet, work through the prior page to diagnose the issue.</div>
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<p>Further configuration of the Raspberry Pi will take place over the network using SSH, not the keyboard and mouse.</p>
<ul>
<li>The SSH server should already be enabled on the Raspberry Pi — this was done during the initial raspi-config setup.</li>
<li>On Mac or Linux systems, you can use a Terminal or xterm window.</li>
<li>For Windows systems, you can <a href="http://www.putty.org/" target="_blank">download PuTTY</a>.</li>
</ul>
<p>The terminal command to access the system would be:</p>
<p><strong>ssh pi@pandora.local</strong> (or whatever hostname was configured) if using Netatalk</p>
<p>or:</p>
<p><strong>ssh pi@192.168.0.42</strong> (or whatever the system’s actual numeric IP address is)</p>
<p>You’ll be prompted for a password — use the password that you set up in raspi-config, or “raspberry” if you left the default. Additionally, the first time connecting you may be prompted regarding a host key for security…enter Y (or click Yes) when prompted.</p>
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<h2><span id="update-installed-software" class="anchor-link-target"></span>Update Installed Software</h2>
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<p>First, link some of the Adafruit libraries into the radio software directory:</p>
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<ol class="linenums">
<li class="L0"><span class="pln">cd</span> <span class="typ">Python</span><span class="pun">–</span><span class="typ">WiFi</span><span class="pun">–</span><span class="typ">Radio</span></li>
<li class="L1"><span class="pln">ln</span> <span class="pun">–</span><span class="pln">s</span> <span class="pun">../</span><span class="typ">Adafruit</span><span class="pun">–</span><span class="typ">Raspberry</span><span class="pun">–</span><span class="typ">Pi</span><span class="pun">–</span><span class="typ">Python</span><span class="pun">–</span><span class="typ">Code</span><span class="pun">/</span><span class="typ">Adafruit_CharLCDPlate</span><span class="com">/*.py .</span></li>
</ol>
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<p>(Note: there’s a space before the last period above. Don’t miss it. Copy and paste this exact line, if possible.)</p>
<p>Next, we’ll compile pianobar from source code:</p>
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<li class="L0"><span class="pln">cd</span> <span class="pun">../</span><span class="pln">pianobar</span></li>
<li class="L1"><span class="pln">make</span></li>
</ol>
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<p>You might get a long list of compiler warnings. That’s fine, as long as the build <em>finishes.</em> Compiler <em>errors,</em> on the other hand, will stop the build process. You might be missing a library from the apt-get sequence above, or something in the software may have changed since these instructions were written, in which case post in the <a href="http://ift.tt/YAiRFf" target="_blank">Adafruit Forums</a> for assistance.</p>
<p>Once compiled, install using:</p>
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<li class="L0"><span class="pln">sudo cp pianobar</span> <span class="pun">/</span><span class="pln">usr</span><span class="pun">/</span><span class="kwd">local</span><span class="pun">/</span><span class="pln">bin</span></li>
</ol>
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<p>Don’t worry about configuring this software yet; we’ll proceed there later. Just use the steps above to get it installed for now.</p>
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<div class="row-fluid build-text"> Once logged in, type the following at the command prompt:</div>
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<p><strong>sudo apt-get update</strong>This updates the list of available software packages, and takes a couple of minutes (just do the “update,” <em>not</em> “upgrade” — the latter can sometimes take <em>hours!</em>)</p>
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<h2><span id="install-prerequisite-software" class="anchor-link-target"></span>Install Prerequisite Software</h2>
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<p>Several prerequisite software packages need to be installed, using different techniques.</p>
<p>First is a collection of code libraries, using the apt-get package manager:</p>
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<li class="L0"><span class="pln">sudo apt</span><span class="pun">–</span><span class="kwd">get</span> <span class="pln">install git i2c</span><span class="pun">–</span><span class="pln">tools python</span><span class="pun">–</span><span class="pln">pexpect python</span><span class="pun">–</span><span class="pln">smbus libavfilter</span><span class="pun">–</span><span class="pln">dev libavformat</span><span class="pun">–</span><span class="pln">dev libcurl4</span><span class="pun">–</span><span class="pln">gnutls</span><span class="pun">–</span><span class="pln">dev libgcrypt</span><span class="pun">–</span><span class="pln">dev libjson0</span><span class="pun">–</span><span class="pln">dev libao</span><span class="pun">–</span><span class="pln">dev</span></li>
</ol>
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<p>This takes a little while; there’s about 100 megabytes of stuff to download and install.</p>
<p>Now use <em>git</em> to install the rest. There’s our LCD radio UI, then a collection of Adafruit libraries for Raspberry Pi, and finally <strong>pianobar</strong>, a terminal-based Pandora client for Raspberry Pi. <em>Do not</em> use the apt-get version of this, it’s out of date!</p>
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<ol class="linenums">
<li class="L0"><span class="pln">cd</span></li>
<li class="L1"><span class="pln">git clone https</span><span class="pun">:</span><span class="com">//github.com/adafruit/Python-WiFi-Radio</span></li>
<li class="L2"><span class="pln">git clone https</span><span class="pun">:</span><span class="com">//github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code</span></li>
<li class="L3"><span class="pln">git clone https</span><span class="pun">:</span><span class="com">//github.com/PromyLOPh/pianobar</span></li>
</ol>
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<p>Now some configuration…</p>
</div>
<div class="page-title-wrapper">
<h1 class="headline"><span id="raspberry-pi-setup-3-of-3">Configure Software Packages</span></h1>
<div class="author">by <a href="http://ift.tt/1tkjL4Z" target="_blank"><span class="name">Phillip Burgess</span></a></div>
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<p>Create a directory for the pianobar configuration:</p>
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<ol class="linenums">
<li class="L0"><span class="pln">cd</span></li>
<li class="L1"><span class="pln">mkdir</span> <span class="pun">–</span><span class="pln">p</span> <span class="pun">.</span><span class="pln">config</span><span class="pun">/</span><span class="pln">pianobar</span></li>
</ol>
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<p>Then link to the configuration file included with the radio software:</p>
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<li class="L0"><span class="pln">cd</span> <span class="pun">.</span><span class="pln">config</span><span class="pun">/</span><span class="pln">pianobar</span></li>
<li class="L1"><span class="pln">ln</span> <span class="pun">–</span><span class="pln">s</span> <span class="pun">../../</span><span class="typ">Python</span><span class="pun">–</span><span class="typ">WiFi</span><span class="pun">–</span><span class="typ">Radio</span><span class="pun">/</span><span class="pln">config</span> <span class="pun">.</span></li>
</ol>
</div>
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<div class="ezAdsense adsense adsense-midtext" style="text-align:center;margin:12px;"><script async="" src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js" type="text/javascript">
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<p>(Note: there’s a space before the final period above. Copy and paste this exact line if possible.)</p>
</div>
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<div class="alert">You MUST use this specific config file in conjunction with our WiFi radio software. Don’t change any settings other than the ones prescribed below.</div>
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<p>Edit the pianobar configuration file with your Pandora account name and password:</p>
<p><b>nano config</b></p>
<p>The login credentials are near the top of the file:</p>
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<ol class="linenums">
<li class="L0"><span class="pln">user</span> <span class="pun">=</span> <span class="pln">YOUR_EMAIL_ADDRESS</span></li>
<li class="L1"><span class="pln">password</span> <span class="pun">=</span> <span class="pln">YOUR_PASSWORD</span></li>
</ol>
</div>
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<p>Replace these with <strong>the email address and password that you use for accessing your Pandora account</strong>, <em>not</em> the account on the Raspberry Pi system! Save the changes to the file and exit from the editor.</p>
</div>
<div class="row-fluid build-text">
<p>Finally, enter the following command to make sure audio is routed to the headphone jack rather than the HDMI port <strong>(you can skip this step if <a href="http://ift.tt/17HBgju" target="_blank">using a USB audio device</a>)</strong>:</p>
<p><strong>sudo amixer cset numid=3 1<br /></strong><br />
And with that all said and done, you should now be able to run pianobar from the command line:</p>
<p><strong>pianobar</strong></p>
<p>If that runs as expected, connect headphones or speakers. The initial volume level will be very low. Type right parenthesis several times to increase the volume:</p>
<p><strong>))))))))</strong></p>
<p>If that all works, press “q” to exit pianobar, then shut down the system in preparation for installing the final hardware:</p>
<p><strong>sudo shutdown -h now<br /></strong><br />
If you were remotely logged in via SSH, your connection will be closed and you won’t see a “halt” message. Allow about 20 seconds before disconnecting power.</p>
<div class="page-title-wrapper">
<h1 class="headline"><span id="add-lcd-plate">LCD and Final Configuration</span></h1>
<div class="author">by <a href="http://ift.tt/1tkjL4Z" target="_blank"><span class="name">Phillip Burgess</span></a></div>
</div>
<div class="page-content">
<div class="row-fluid build-text">
<p><b>If you haven’t already assembled the LCD Pi Plate, do that step now.</b> <a href="http://ift.tt/KHxD6p" target="_blank"><b>Here’s a tutorial to guide you through the assembly</b></a><b>.</b></p>
<p>Raspberry Pi Model A users: the LCD Pi Plate is normally assembled with a rubber bumper near one corner for stability atop the Raspberry Pi. This bumper rests on the Ethernet jack, which is only present on the <i>Model B</i> board. Model A users will need to find a suitable alternative to the bumper, non-conductive and about 5/8″ tall. A cork or rubber eraser trimmed to size can work, a 5/8″ nylon PC board spacer if you have one, or a 2×2 Lego® brick set on its side.</p>
</div>
<div class="row-fluid build-image"><a href="http://ift.tt/22N0goM" target="_blank"><img alt="raspberry_pi_lego.jpg" class="7335-asset img-responsive" src="http://ift.tt/1WWvva3" /></a></div>
<div class="row-fluid build-alert">
<div class="alert">The Raspberry Pi should be shut down when connecting the LCD and installing in a case. If it’s currently running, issue the shutdown command as shown at the bottom of the previous page.</div>
</div>
<div class="row-fluid build-text">
<p>If using the Pi Box case, <a href="http://ift.tt/QnqO6t" target="_blank">follow this tutorial</a> to install the Raspberry Pi inside, leaving the top of the case off.</p>
<p>Align the 26-pin headers on the LCD plate and Raspberry Pi, and install the plate by pressing straight down gently.</p>
<p>Connect power to the Raspberry Pi. The red power light should come on. If not, there might be a soldering mistake on the LCD Pi Plate board.</p>
<p>Allow 30 seconds to a minute for the Raspberry Pi to fully boot and situate itself on the network. At this point, you should be able to log in from a terminal over ssh, e.g.:</p>
<p><b>ssh pi@192.168.0.6</b> (or whatever address the system reported during the configuration process)</p>
<p>If you previously installed netatalk (optional), and if you changed the Raspberry Pi’s default hostname, you might be able to use:</p>
<p><b>ssh pi@pandora.local</b></p>
</div>
<div class="row-fluid build-alert">
<div class="alert">If you receive a response that the connection timed out or the hostname cannot be resolved, connect a monitor and keyboard and work through the “Initial System Configuration” steps again; it’s most likely a typo in the wireless setup.</div>
</div>
<div class="row-fluid build-text">
<p>You should be successfully logged into the system at this point.</p>
<p>First, let’s test the LCD and buttons:</p>
<p><b>cd Python-WiFi-Radio</b><br />
<b>sudo python Adafruit_CharLCDPlate.py<br /></b><br />
If using an RGB-backlit LCD, the program should cycle through different backlight colors (with the Blue & White LCD, it will flash on and off a few times). Then it will ask you to try pressing buttons.</p>
<p>Adjust the Contrast dial (using a small screwdriver if necessary) until the text is sharp and legible.</p>
<p>When finished, press Control+C to exit. The LCD is ready!</p>
</div>
<div class="row-fluid build-text">
<p>Next, let’s try our radio software:</p>
<p><b>sudo python PiPhi.py</b></p>
<p>This is our own “wrapper” for pianobar, allowing us to use the LCD and buttons to interact with that program. If all goes well, the system should report its network address, fetch a list of stations from the Pandora server and start playing. If not, refer to the Troubleshooting page.</p>
<p>With only a few buttons available, we’ve condensed only the most essential functions to this program. If you need to configure your Pandora account (such as adding new stations to the list), use a web browser to access the Pandora web site.</p>
<p>From left to right, the button functions are:</p>
<ul>
<li>Play/Pause (tap once to pause, again to play, or hold for three seconds to exit the program).</li>
<li>Station select (brings up a menu — can then use the up and down buttons to pick a station — press this button again to activate, or the Play/Pause button to cancel).</li>
<li>Volume Up/Down (two buttons, one above the other)</li>
<li>Next Track</li>
</ul>
<p>Take a moment to experiment with the buttons and familiarize yourself with their use. If everything seems to be working, we’ll do some final configuration to make the system truly standalone. To exit from the PiPhi program, hold down Select (the leftmost button) for 3+ seconds.</p>
</div>
<div class="row-fluid build-text">
<h2><span id="final-configuration-and-auto-start" class="anchor-link-target"></span>Final Configuration and Auto-Start</h2>
</div>
<div class="row-fluid build-text">
<p>First, <b>cd</b> to the directory with the PiPhi.py script (you should already be there if you’ve followed the steps till now!) and edit the PiPhi.py script:</p>
<p><b>nano PiPhi.py<br /></b><br />
Two lines near the start of the code (around line 26) are of interest:</p>
</div>
<div class="build-code">
<div class="code-copy-container"><a class="code-copy-button" href="http://ift.tt/1WWvrXT" target="_blank">Copy Code</a></div>
<ol class="linenums">
<li class="L0"><span class="pln">RGB_LCD</span> <span class="pun">=</span> <span class="kwd">False</span> <span class="com"># Set to ‘True’ if using color backlit LCD</span></li>
<li class="L1"><span class="pln">HALT_ON_EXIT</span> <span class="pun">=</span> <span class="kwd">False</span> <span class="com"># Set to ‘True’ to shut down system when exiting</span></li>
</ol>
</div>
<div class="row-fluid build-text">If you’ve opted for an RGB-backlit LCD, change the first of these lines to:</div>
<div class="build-code">
<div class="code-copy-container"><a class="code-copy-button" href="http://ift.tt/1WWvrXT" target="_blank">Copy Code</a></div>
<ol class="linenums">
<li class="L0"><span class="pln">RGB_LCD</span> <span class="pun">=</span> <span class="kwd">True</span></li>
</ol>
</div>
<div class="row-fluid build-text">Since our goal is a standalone system with no keyboard or monitor, we need some way to issue an orderly shutdown (Linux systems don’t like it when you just pull the plug). To make the 3-second button press shut down the system (rather than just exit to a command line prompt), change the second line to:</div>
<div class="build-code">
<div class="code-copy-container"><a class="code-copy-button" href="http://ift.tt/1WWvrXT" target="_blank">Copy Code</a></div>
<ol class="linenums">
<li class="L0"><span class="pln">HALT_ON_EXIT</span> <span class="pun">=</span> <span class="kwd">True</span></li>
</ol>
</div>
<div class="row-fluid build-text">
<p>Nearly there! Now we just need to set up the system to start our program upon booting.</p>
<p><b>sudo nano /etc/rc.local<br /></b><br />
Before the final “exit 0” line, insert these two lines:</p>
</div>
<div class="build-code">
<div class="code-copy-container"><a class="code-copy-button" href="http://ift.tt/1WWvrXT" target="_blank">Copy Code</a></div>
<ol class="linenums">
<li class="L0"><span class="pln">cd</span> <span class="pun">/</span><span class="pln">home</span><span class="pun">/</span><span class="pln">pi</span><span class="pun">/</span><span class="typ">Python</span><span class="pun">–</span><span class="typ">WiFi</span><span class="pun">–</span><span class="typ">Radio</span></li>
<li class="L1"><span class="pln">python</span> <span class="typ">PiPhi</span><span class="pun">.</span><span class="pln">py</span> <span class="pun">&</span></li>
</ol>
</div>
<div class="row-fluid build-text">
<p>If you downloaded or otherwise placed the radio software in a different location, the first line should be changed accordingly. “sudo” isn’t necessary here because the rc.local script is already run as root.</p>
<p>Reboot the system to test the startup function:</p>
<p><b>sudo reboot</b></p>
<p>After 30 seconds to a minute, you should see the backlight turn on and music will begin. If not, connect to the system using ssh and confirm the configuration steps above.</p>
</div>
<div class="row-fluid build-text">
<div class="page-title-wrapper">
<h1 class="headline"><span id="troubleshooting">Troubleshooting</span></h1>
<div class="author">by <a href="http://ift.tt/1tkjL4Z" target="_blank"><span class="name">Phillip Burgess</span></a></div>
</div>
<div class="page-content">
<div class="build-faq">
<h2 class="question"><span id="faq-1" class="anchor-link-target"></span>When I run the PiPhi script or any of the LCD examples, I get an “’lcd’ is not defined” error message.</h2>
<div class="answer">
<p>The PiPhi script must be run as root in order to access the LCD and keypad hardware:</p>
<p><b>sudo python PiPhi.py</b></p>
<p>If that doesn’t fix it, check for any solder bridges or cold joints on the LCD plate, and make sure the headers between the plate and Raspberry Pi are aligned.</p>
<p>Or the code may be having difficulty accessing the I2C bus. We can override this manually if the need arises. Edit PiPhi.py, looking for this line:<br />
<b><br />
lcd = Adafruit_CharLCDPlate()</b></p>
<p>And simply add this parameter:<br />
<b><br />
lcd = Adafruit_CharLCDPlate(busnum=1)</b></p>
<p>Run the code again and see if that helps.</p>
</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-2" class="anchor-link-target"></span>The Raspberry Pi does not boot when the LCD/Keypad Pi Plate is attached.</h2>
<div class="answer">Check for any solder bridges or cold joints on the LCD plate, and make sure the headers between the plate and Raspberry Pi are aligned.</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-3" class="anchor-link-target"></span>A keyboard attached to the Raspberry Pi is not responding.</h2>
<div class="answer">Some keyboards require more power than the Raspberry Pi USB port can provide. Add a powered USB hub, or try a different keyboard if you have a spare.</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-4" class="anchor-link-target"></span>The system never connects to the wireless network.</h2>
<div class="answer">
<p>Most likely a typo during the wireless setup procedure. Go through each step on the “Initial System Configuration” page and check spelling carefully, including your wireless network name (SSID) and password.</p>
<p>“Hidden” WiFi networks are particularly fussy, and even with the extra directions provided might not connect. We very strongly recommend using a broadcast network name. If using a hidden network…when creating the file wpa_supplicant.conf, did you remember to change the SSID and password to the values used by your network?</p>
<p>It might also be an incompatible USB wireless adapter. The one in the Adafruit shop is known to work with the Raspberry Pi.</p>
</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-5" class="anchor-link-target"></span>The PiPhi script just hangs at “Receiving station list…”</h2>
<div class="answer">
<p>The pianobar application is most likely failing to connect to the Pandora server…probably due to an incorrect email address and/or password. Check the settings in the configuration file and make sure these match your Pandora credentials, <i>not</i> the account on your Raspberry Pi.</p>
<p>If in doubt, run pianobar directly from the command line first. Once that’s working, then move on to the PiPhi script.</p>
</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-6" class="anchor-link-target"></span>pianobar (or the PiPhi script) is running, but no sound is coming from the headphone jack.</h2>
<div class="answer">
<p>Make sure audio is routed to the headphone jack rather than the HDMI port. From the command line:</p>
<p><b>sudo amixer cset numid=3 1<br /></b></p>
</div>
</div>
<div class="build-faq">
<h2 class="question"><span id="faq-7" class="anchor-link-target"></span>When pianobar tries to connect, I get a “TLS handshake error” message.</h2>
<div class="answer">
<p>Enter the following command (as a <b>single line</b> — copy and paste verbatim, if possible):</p>
<p><b>fingerprint=`openssl s_client -connect tuner.pandora.com:443 < /dev/null 2> /dev/null | openssl x509 -noout -fingerprint | tr -d ‘:’ | cut -d’=’ -f2` && echo tls_fingerprint = $fingerprint >> ~/.config/pianobar/config<br /></b><br />
Then try pianobar (or PiPhi) again.<img alt="Pi wifi radio" class="alignnone size-medium wp-image-304" height="225" sizes="(max-width: 300px) 100vw, 300px" src="http://ift.tt/22N0iNG" srcset="http://ift.tt/22N0iNG 300w, http://ift.tt/1WWvrXX 768w, http://ift.tt/22N0iNI 235w, http://ift.tt/1WWvvaf 80w, http://ift.tt/22N0goU 320w, http://ift.tt/1WWvvqt 800w" width="300" /></p>
</div>
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</li>
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Raspberry Pi WiFi Radio

Overview Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpo...

Raspberry Pi WiFi Radio

Wall's Corners

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Title: Raspberry Pi WiFi Radio
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Overview Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpo...

Raspberry Pi WiFi Radio

Overview Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpo...

IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

IOT BASED RASPBERRY PI HOME AUTOMATION USING IBM BLUEMIX

Raspberry Pi WiFi Radio

Raspberry Pi WiFi Radio

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