ReSpeaker Lite with XIAO ESP32S3

The ReSpeaker Lite comes with a pre-soldered XIAO ESP32S3 controller via I2S pins, providing an easy and solder-free setup to simplify your development and integration process.

Equipped with a dual microphone array, the ReSpeaker Lite does a great job with capturing far-field speech and voice up to 3 meters away, even in noisy environments. The two digital microphones work together to cancel out point noise, providing clear voice capture from a distance. For power and data transmission, there is a USB-C connector on the board.

Powered by the XMOS XU-316 AI sound and audio chip, this kit supports onboard AI algorithms for Natural Language Understanding (NLU). It also has Interference Cancellation, Acoustic Echo Cancellation, Noise Suppression, and Automatic Gain Control (AGC) which helps provide great voice recognition and clarity.

It is fully compatible with open-source platforms like Arduino, PlatformIO, MicroPython, and CircuitPython, giving you endless possibilities for further development in many projects!

If you’d like to add a speaker to the board to listen to anything you’ve recorded, click here to find one in our shop. We also stock the Seeed DIY case for ReSpeaker Lite!

Note: This kit comes with the XIAO ESP32S3 already soldered on

Features

• Pre-Soldered ESP32 Controller: A powerful XIAO ESP32S3 is pre-soldered via the I2S pins, offering a solderless experience for further development and integration.
• Dual Microphone Array for Far-Field Voice Capture: The 2 high-performance digital microphones capture and extract far-field speech and voice (up to 3 meters) even in noisy environments as they cancel point noise using two microphone inputs.
• AI NLU Algorithms: Powered by XMOS XU-316 AI sound and audio chip, the kit includes Natural Language Understanding algorithms for Interference Cancellation (IC)​, Acoustic Echo Cancellation, Noise Suppression, and Automatic Gain Control (AGC), enabling high-quality voice capture.
• Embracing Open Source: It’s compatible with Arduino, PlatformIO, MicroPython, and CircuitPython for further development.
• Compatible with Popular Voice Assistants: This kit allows you to build your own natural language processor and connect it to Home Assitant via ESPHome, Amazon Alexa Voice Service, Google Assistant, or Cloud Speech-to-Text service, enabling you to ask questions and issue voice commands to your programs.
• RGB LED: The kit features a programmable WS2812 RGB LED, supporting custom effects and offering a visual interface for your projects.
• Product number: Seeed 110061601

What’s on Board

1	Dual Microphone Array	Provides high-quality audio input.
2	Power Indicator Light	Illuminates when powered on.
3	RGB Light	Programmable WS2812 provides visual feedback.
4	Mute Indicator Light	Lights up red when the mute button is pressed.
5	USR Button	User-defined button.
6	Mute Button	Mutes audio input when pressed.
7	XIAO ESP32S3	For further development and integration.
8	XU316 Core Processor	Responsible for audio processing and transmission.
9	External Power Supply Solder Pad	Supports external 5V power supply.
10	USB Type-C Port	For power and data transmission.
11	Speaker Connector	For audio output. Supports 5W amplifier speakers.
12	3.5mm Headphone jack	Output audio, We can plug active speakers or headphones into this port.
13	External power pad 1	Unused IO pins on the XIAO ESP32.
14	External power pad 2	Unused IO pins on the XU316.
15	JTAG	For debugging and programming the XU316.

Specifications

General

Core Chip	XMOS XU316
Digital Microphones	2x High-Performance Digital Microphones
Sensitivity	-26 dBFS
Acoustic Overload Point	120 dBL
SNR	64 dBA
Power Supply	USB 5V, External 5V
Dimensions	35 x 86 mm
Audio Output	Speaker Connector / 3.5mm Headphone Jack
Maximum Sampling Rate	16Khz
Speaker	Supports 5W Amplifier Speakers.

XIAO ESP32S3

Processor	ESP32-S3R8
	Xtensa LX7 dual-core, 32-bit processor running up to 240 MHz
Wireless	Complete 2.4GHz WiFi subsystem
	BLE: Bluetooth 5.0, Bluetooth mesh
On-chip Memory	8M PSRAM & 8MB Flash
Interface	1x UART, 1x IIC, 1x IIS, 1x SPI,11x GPIO(PWM), 9x ADC, 1x User LED, 1x Charge LED
	1x Reset button, 1x Boot button
Dimensions	21 x 17.5mm
Power	Input voltage (Type-C): 5V
	Input voltage (BAT): 4.2V
	Circuit operating Voltage (ready to operate):
	– Type-C: 5V@19mA
	– BAT: 3.8V@22mA
	Charging battery current: 100mA
Low Power Consumption Model	Modem-sleep Model: ~ 25 mA
Supply Power: 3.8V	Light-sleep Model: ~ 2mA
	Deep Sleep Model: ~ 14 μA
WiFi Enabled Power Consumption	Active Model: ~ 100 mA
BLE Enabled Power Consumption	Active Model: ~ 85 mA
Working Temperature	-40°C ~ 65°C

Resources

• Product Wiki
• I2S Firmware Download
• Product-Brief of XMOS XU316
• ReSpeaker Lite Voice Assistant Kit with XIAO ESP32S3 – CE certifications
• ReSpeaker Lite Voice Assistant Kit with XIAO ESP32S3 – FCC certifications

Pinout

Package Contents

• 1x ReSpeaker Lite Voice Assistant Kit