This document discusses how to build a DIY Google Home device using a Raspberry Pi by installing the Google Assistant SDK. It outlines downloading the AIY Projects Voice Kit image, flashing it to an SD card, configuring the hardware including a microphone and speaker. It also covers setting up a developer project on Google Cloud and enabling the necessary APIs, as well as installing the Python SDK and libraries and providing a demo of the Assistant working on the Raspberry Pi. Potential applications discussed include integrating it with IFTTT and other sample projects.

1. DIY Google Home with
Google Assistant
On a Raspberry Pi
Syed Anwaarullah
PotentialLabs

2. Agenda
• Intro to Google Home
• Building Google Home with Assistant on Raspberry Pi
• Interfacing with Stuff

3. We already have Voice Assistants on Phone…

4. Source: https://medium.com/conversational-interfaces/how-voice-assistants-seemingly-came-from-nowhere-33747876b91f

6. Google Home; Why build one?
$49 $129 $399
Not available in India yet, so let’s build one instead 

8. Teardown of Google Home
https://www.ifixit.com/Teardown/Google+Home+Teardown/72684

11. Where does the Assistant live?

12. “Ok, Google: Let’s build it…”
• Configure and Test the Hardware, Audio, N/W Access etc
• Configure Dev Project & Account Settings
• Setup the Python SDK & Library
“Ok, Google”

13. AIY Projects Voice Kit

14. Hardware
• Raspberry Pi 2/3,
Power Supply, SD
Card etc
• Microphone (USB) –
Logitech USB
Webcam with Mic
• Speaker (Simple
3.5mm)

15. Download and Flash the Image containing SDK
https://aiyprojects.withgoogle.com/voice#assembly-guide-1-get-the-voice-kit-sd-image

16. Boot the Device, SSH &/ VNC

17. Configure and test Speaker speaker-test -t wav

18. Configure and test Mic
sudo nano /etc/asound.conf
arecord --format=S16_LE --duration=5 --rate=16000 --
file-type=raw out.raw
aplay --format=S16_LE --rate=16000 out.raw

19. Configure a Dev Project on gCloud
• https://developers.google.com/assistant/sdk/develop/python/config-
dev-project-and-account
• https://aiyprojects.withgoogle.com/voice#users-guide-1-2--turn-on-
the-google-assistant-api
• Activity Controls Page, enable these
• Web & App Activity
• Device Information
• Voice and Audio Activity

20. Setup the Python SDK & Library

21. Demo!

22. Let’s integrate it with IFTTT

23. More sample projects…

24. Ok, Google;
Let’s Q&A
Syed Anwaarullah
syed@potentiallabs.com
@Anwaarullah
IoT R&D Lab & Store,
Kondapur, Hyderabad
www.potentiallabs.com