Echo Pyramid is a functional base designed for smart voice interaction applications. Built specifically for the M5Stack Atom / AtomS3 / AtomS3R series controllers, it offers plug-and-play convenience for rapidly building high-performance audio interaction voice devices. By pairing with an Atom series controller, it handles audio data processing, wireless communication, business logic control, and IoT connectivity, making it well-suited for far-field voice recognition, voice assistants, voice control, and a wide range of other smart interaction scenarios.
The device features a dedicated STM32G030F6P6 microcontroller responsible for managing the dual capacitive touch-slider zones and RGB indicator LEDs, enabling low-latency touch response and rich, programmable lighting effects. The intuitive touch controls combined with vivid visual feedback allow users to easily perceive device status, voice interaction results, and system prompts, enhancing both the overall user experience and product expressiveness. The audio system employs a high-performance ES8311 audio codec paired with an ES7210 microphone input acquisition chip featuring AEC echo cancellation, delivering efficient acoustic echo cancellation, noise suppression, and clear far-field voice capture to ensure reliable voice recognition and full-duplex interaction. An AW87559 high-efficiency Class-D speaker driver powers the built-in speaker, providing audio output with excellent dynamic range and clear sound quality. A Si5351 programmable clock generator serves as the main clock source (MCLK), supplying low-jitter, flexibly configurable clock signals to both the audio ADC and DAC, effectively improving voice recognition accuracy and overall audio performance.
Echo Pyramid is ideal for development scenarios including smart speakers, desktop voice assistants, voice control hubs, local/cloud voice interaction prototypes, and IoT voice gateways.
This tutorial explains how to use an AtomS3R paired with the Echo Pyramid base to build a personal voice assistant by flashing the Xiaozhi firmware via M5Burner.
This tutorial explains how to use an Atom-Matrix paired with the Echo Pyramid base to flash the Echo Pyramid Bluetooth speaker firmware via M5Burner.
Features
Compatible with Atom / AtomS3 / AtomS3R series controller modules
Dedicated STM32G030F6P6 auxiliary MCU for touch and RGB lighting management
ES8311 high-performance audio codec (supports high-fidelity playback and capture)
ES7210 microphone input acquisition with AEC echo cancellation
AW87559 high-efficiency speaker amplifier with built-in speaker
Si5351 programmable low-jitter main clock generator
Programmable RGB indicator LEDs
Dual-side capacitive touch-slider zones
1x HY2.0-4P Grove expansion port (I2C)
Includes
1x Echo Pyramid
Applications
Smart speakers and desktop voice assistants
Voice control hubs
Local / cloud voice interaction prototypes
IoT voice gateways
Specifications
Specification
Parameter
MCU
STM32G030F6P6
Audio Codec
ES8311
Audio ADC
ES7210
Microphone
LMA3729T381-0Y3S
Amplifier
AW87559
Indicator LED
28 x WS2812 RGB LED (7 LEDs per RGB Bar strip)
Touch Function
Dual-side touch-slider zones with 4 touch detection points, 2 per side
Input Power
DC 5V
Expansion Port
1x HY2.0-4P
Standby Current
14.92mA (standby without controller power)
Operating Current
578.47mA (maximum volume output with controller connected)
Operating Temp
-10°C ~ 60°C
Product Size
83.6 x 83.6 x 56.7mm
Product Weight
100.7g
Package Size
93.0 x 86.0 x 56.0mm
Gross Weight
145.1g
Learn
Installing the Atom Series Controller
Align the Atom series controller with the reserved pin header interface on the Echo Pyramid, then press it in vertically and steadily to ensure a reliable connection.
RGB LED Strip and Touch Point Overview
The RGB LED strips inside the Echo Pyramid are divided into two groups (RGB CH1 / RGB CH2), controlled by the STM32 co-processor. The LEDs within each group are numbered sequentially from 0 to 13 (as shown in the diagram).
The Echo Pyramid features a total of 4 touch detection points across both sides (TP1, TP2, TP3, and TP4 as shown above), which can be used for swipe or single-point touch interactions.
Power Supply
Note
Please power the device through the USB Type-C or HY2.0-4P port at the bottom of the Echo Pyramid. Powering from any other source may prevent the device from starting normally.
