The M5Stack Voice Pyramid is a voice interaction base for M5Stack Atom boards, combining touch controls, audio processing, and speaker output for building voice-enabled projects.

The M5Stack Voice Pyramid (previously Echo Pyramid) is a smart audio base designed for voice interaction projects, built to work with the M5StackAtomS3andAtomS3R controller series.

Note: not compatible with the Atom Voice!

Designed for plug-and-play use, it provides a solid foundation for building voice-enabled devices. When paired with an Atom controller, it handles audio processing, wireless communication, control logic, and IoT connectivity, making it suitable for applications such as voice assistants, far-field voice recognition, and smart control systems.

At the core of the interaction system is a dedicated STM32G030 microcontroller, which manages dual capacitive touch-slider zones and RGB indicator LEDs. This enables responsive touch input alongside clear visual feedback, allowing users to easily understand system status, interaction results, and prompts.

The audio system is built for performance and clarity. It combines an ES8311 audio codec with an ES7210 microphone input chip featuring acoustic echo cancellation (AEC), helping to reduce noise and improve far-field voice capture. This setup supports reliable voice recognition and full-duplex interaction. For audio output, an AW87559 Class-D amplifier drives the onboard speaker, delivering clear sound with good dynamic range. A Si5351 programmable clock generator provides a stable, low-jitter clock signal for both ADC and DAC components, improving overall audio performance.

Voice Pyramid is well suited to a range of development scenarios, including smart speakers, desktop voice assistants, voice control hubs, and IoT voice gateways.

ATOM not included.

Features

• Compatible with Atom / AtomS3 / AtomS3R series controller modules
• Not compatible with the Atom Voice
• 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)

Specifications

Resources

• Product documentation

Package Contents

• 1x M5Stack Voice Pyramid Smart Speaker Base