Knowles IA8201 Raspberry Pi User manual

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©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
1
This document serves as a quick start guide for the IA8201 Raspberry Pi. This quick start guide provides
details on the product components, prerequisites, and hardware setup.
AUD-ESP-00519
IA8201 Raspberry Pi Quick Start Guide

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Table of Contents
Chapter 1: IA8201 Raspberry Pi.......................................................................................................................................3
1.1 Overview..........................................................................................................................3
1.2 Components .....................................................................................................................3
1.3 Prerequisites .....................................................................................................................3
1.4 Discovering the SD card mount point and unmounting it....................................................3
1.5 Hardware Setup ................................................................................................................5
1.6 Startup..............................................................................................................................5
Chapter 2: Additional Support...........................................................................................................................................7

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Chapter 1: IA8201 Raspberry Pi
1.1 Overview
This guide will provide the steps to setting up the IA8201-LT with a Raspberry Pi along with standard
software to enable Alexa keyword detection.
1.2 Components
1x Raspberry Pi Connector
1x IA8201-LT Board
1x 3-mic Array
1x 2-mic Array
2x Flex Cables
1.3 Prerequisites to Flash Image
Download IA8201 Raspberry Pi Release Image from solutions.knowles.com
Linux PC for running flashing scripts (windows flashing is not supported currently).
Raspberry Pi 3 Model B
1.4 Flashing SD Card with release image
Go to a Bash shell on your machinesee which devices are
Run lsblk –pto see which devices are currently connected to your machine
Insert SD card into your machine or SD card reader
Flex Cables
Raspberry Pi
Connector
Mic Arrays
IA8201-LT
Board

IA8201 Raspberry Pi Quick Start Guide
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©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Run lsblk –p again and the new device should should appear.
The left column will give the device name and any partition. If any partitions have been mounted,
unmount them all with unmount (i.e. unmount /dev/sdX1)
Navigate to the root folder of the release image “raspberry-pi-chelsea-iot-xxxx”
Copy the “sdcard_setup.sh”file
from “deploy\images\raspberry-
pi\setup_sdcard.sh”to root folder
Steps below in Figure 1
Run ./setup_sdcard.sh –b=<lt-
evm> /dev/sdX
This will ask you to confirm the
device partitions, ress “Y” to
continue flashing. This will take a
few minutes
Run sync. This will ensure the write
cache is flushed and it is safe to
unmount your SD card
Remove SD card and place in
Raspberry Pi
Figure 1 - Device Flashing

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
1.5 Hardware Setup
Connect Raspberry Pi to the Connector board.
Figure 2: Raspberry Pi and IA8201-LT
Connect IA8201 through flex cable
Figure 3: Open Flex Connector
Open Flex connector by pressing on each side (shown by arrows in Figure 3)
Place Flex in (blue side up) and close the connector by pushing the sides in. It will be flush as
in Figure 4
Connect your desired mic array with the other flex cable the same way to the IA8201-LT
board
Note: Left side of connector is open and right side is closed to illustrate difference in the pictures.
1.6 Start-up
Connect Raspberry Pi to monitor and plug in micro USB
Figure 4: Closed Flex
Connector
Open Flex
Connector

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Alternatively, find the IP address of the Raspberry Pi and use ssh pi@<IPaddress> and get
the console to run the setup and commands
https://www.raspberrypi.org/documentation/remote-access/ip-address.md
Boot-up dialogue will run and a login prompt will appear.
Login using the following credentials:
oUsername: pi
oPassword: raspberry
Go to the raspberry pi terminal and run the voice_wake app
At this point, uttering “Alexa” should flash the LED by the micro USB on the IA8201-LT
board
To enable a 5 second stream use mkdir –p /data/data
After, run voice_wake and the data will be saved to the directory created
Note: To run AVS commands, please refer to our guide on solutions.knowles.com

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Chapter 2: Additional Support
For additional support, including forums, FAQ’s, and a support ticketing system, please visit:
https://solutions.knowles.com/.

IA8201 Raspberry Pi Quick Start Guide
knowles.com | AUD-ESP-00519, v0.1
©2021; Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic,
Knowles are the trademarks of Knowles Electronics, LLC
Revision History
Revision
Description
Date
0.1
Initial release
6/25/2021