Want to see the AVS Device SDK in action? This guide is designed to have a working sample running on a Raspberry Pi 3 running Raspbian Stretch with Desktop in less than an hour.
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This guide uses a handful of scripts to download, build, and run the AVS Device SDK with wake word detection enabled. If you'd like to build from scratch, we also provide step-by-step instructions that will walk you through downloading dependencies, running the authorization service, and running the sample app in debug mode.
This guide provides step-by-step instructions to set up the Alexa Voice Service (AVS) Device SDK on a Raspberry Pi 3 running Raspbian Stretch with Desktop. When finished, you'll have a working sample app to test interactions with Alexa. Before you get started, we recommand watching Getting Started. Before you begin, you'll need the following components: Raspberry Pi 3 Model B and power supply (see recommended kit). Note: To use a Raspberry Pi Zero (or Zero W), use the Google Assistant Service instead. USB microphone (see recommended). Speaker, preferably USB (see recommended USB or 3.5mm-jack). An SD card with NOOBS pre-installed. NOOBS is an OS installer that contains Raspbian. Mathematica and the Wolfram Language are included in this release under license and with permission of Wolfram Research, Inc. And may be used for non-commercial purposes only. By using this software you agree to be bound by the Wolfram Raspberry Pi Bundle License Agreement available here.
Prerequisites
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- Mar 28, 2018 No version of Android is officially compatible with the raspberry pi and therefore the version we will install is not optimized for our dear motherboard. It is therefore difficult today to use Android on a daily basis on its raspberry pi even if the installation we are going to present turns relatively well. Prerequisites to install Android.
- I am currently attempting to start developing for Android on the Raspberry PI 2. I have already ruled out the posibility of using an IDE such as Eclipse or Android Studios (yes I know the RPI isn't.
Required Hardware
- Raspberry Pi 3 (Recommended) or Pi 2 Model B (Supported) - Buy at Amazon - Pi 3 or Pi 2.
- Micro-USB power cable for Raspberry Pi.
- Micro SD Card (Minimum 8 GB) - You need an operating system to get started. NOOBS (New Out of the Box Software) is an easy-to-use operating system install manager for Raspberry Pi. The simplest way to get NOOBS is to buy an SD card with NOOBS pre-installed - Raspberry Pi 8GB Preloaded (NOOBS) Micro SD Card. Alternatively, you can download and install it on your SD card (follow instructions here).
- USB 2.0 Mini Microphone - Raspberry Pi does not have a built-in microphone; to interact with Alexa you'll need an external one to plug in - Buy on Amazon
- External Speaker with 3.5mm audio cable - Buy on Amazon
- A USB Keyboard & Mouse, and an external HDMI Monitor - we also recommend having a USB keyboard and mouse as well as an HDMI monitor handy if you're unable to remote(SSH) into your Pi.
- Internet connection (Ethernet or WiFi)
- (Optional) WiFi Wireless Adapter for Pi 2 (Buy on Amazon).Note: Pi 3 has built-in WiFi.
- You can use any HDMI monitor and USB Keyboard/Mouse for these tutorials.
If your Raspberry Pi is not running Raspbian Stretch With Desktop use these instructions to upgrade. If you choose to build with Raspbian Jessie, you need to build certain dependencies from source (see commit a5646fc for instructions).
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Get started
- Copy and paste the following command into your terminal window and hit return to update apt-get:
- Download the installation and configuration scripts. Copy and paste the following into your terminal and hit return:
Build with Bluetooth (optional)
Building with Bluetooth is optional, and is currently limited to Linux and Raspberry Pi;
A2DP-SINK
and AVRCP
profiles are supported. In order to use Bluetooth for these platforms, you must install all Bluetooth dependencies and disable any processes which obtain an incoming Bluetooth audio stream, such as:BlueALSA
If you are using
BlueALSA
, you must disable Bluetooth by running this command:Raspberry Pi Android Os Download
Authorization
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Before you can use the Device SDK sample app, you'll need to authorize it with the Alexa cloud in order to leverage the full range of Alexa capabilities and features available to the sample app.
Prerequisites
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You must register an AVS Product and Create a Security Profile, if you haven't already.
Note: The product must be enabled for code-based linking.
Download your credentials
Move the config.json file that you downloaded when you created your Security Profile to your home directory. Using the file manager, copy this file from the /downloads folder and place it in your home/pi folder.
Run the installation script
- Run the setup.sh script that you downloaded earlier, using
config.json
and the device serial number (DSN) as arguments.For example:
Note: If you don't supply a DSN, then the default value
123456
will be generated by the SDK.Select 'AGREE' when it prompts you to accept the licensing terms from our third-party libraries. Unless, of course, you disagree!
This will kick off the installation process which could take over 20 minutes. Note that about 15 minutes into the install, it's going to pause and ask you to accept Sensory Wake Word's terms and conditions (you'll need to hit 'return' and then type 'yes' to accept).
Finish authorization using Login with Amazon
Your Raspberry Pi now has the AVS Device SDK installed and your credentials loaded, but your device still needs a refresh token to enable your client to maintain a connection to the Alexa Voice Service in the cloud. If you design an Alexa built-in product and ship a million of them to your customers, they can all use the same
Client ID
and ProductID
- but each individual device will require a unique refresh token to authenticate with AVS through Login With Amazon (LWA).- Navigate to your home directory and initialize the sample app:
- Wait for the sample app to display a message like this:
- Use a browser to navigate to the URL specified in the message from the sample app.
- Authenticate using your Amazon user credentials.
- Enter the code specified in the message from sample app.
- Select “Allow”.
- Wait (it may take as long as 30 seconds) for
CBLAuthDelegate
to successfully get an access and refresh token from Login With Amazon (LWA). At this point the sample app will print a message like this: - You are now ready to use the sample app. The next time you start the sample app, you will not need to go through the authorization process.
Talk with Alexa
If the sample app isn't already running, you'll need to initialize the sample app:
Now, to test your prototype, say 'Alexa' into the microphone to trigger the Wake Word Engine; make sure that your headphones or speakers are plugged in.
When you say 'Alexa...', you should see a bunch of messages scroll in your terminal window. One of those will show the status changing to
Listening
, indicating the wake word has been recognized. Then say 'Tell me a joke.' If Alexa responds with Thinking
..., then Speaking
, you have a working prototype… and probably, a very bad joke.Run integration and unit tests
After you've built the AVS Device SDK, we recommend running integration and unit tests to make sure that the SDK is functioning as designed; to do this run:
Updating the SDK
To update the SDK, follow these instructions.
Warning: The Google Assistant Library for Python is deprecated as of June 28th, 2019. Use the Google Assistant Service instead.The Google Assistant Library for Python is a turnkey solution for anyone whowants to quickly integrate the Assistant into a project. The library iswritten in Python and is supported on popular hardware such as theRaspberry Pi 3.
Note: Refer to the Compatibility and feature supporttable to see the differences between the Google Assistant Library and the service.Get started
Once you have your hardware, read on to learn how to get the Google Assistantrunning on it!
Embed the Google Assistant
This section gets the Google Assistant Library working on your project:
Extend the Google Assistant
This section extends the Google Assistant Library to includeDevice Actions: