The Echo Pyramid base is crafted for the M5Stack Atom, AtomS3, and AtomS3R series IoT controllers using the ESP32 or ESP32-S3 wireless SoC, supporting smart voice interaction functions like far-field voice recognition, voice assistants, and voice control. It contains an integrated speaker, a MEMS microphone, an ES8311 HD audio codec for audio playback and recording, and an STM32 MCU for touch zones and RGB LED management. The device powers through a USB Type-C port and includes a 4-pin connector for I2C module expansion.
Echo Pyramid specifications:
– Supported IoT Controllers: M5Stack Atom, AtomS3, AtomS3R
– Microcontroller: STMicro STM32G030F6P6 32-bit Arm Cortex-M0+ CPU @ 64 MHz, 8KB SRAM, 64KB flash
– Audio:
– HD Codec: ES8311 for playback and recording
– Microphone: LMA3729T381-0Y3S MEMS
– ADC: ES7210 for microphone input
– Speaker built into the pyramid bottom
– Amplifier: AW87559 Class-D speaker driver
– Clock Generator: Si5351 for low-jitter clock signals
– USB: USB Type-C for power and programming
– Expansions: 4-pin HY2.0 connector with I2C
– Misc:
– 28x WS2812 RGB LED (7x LEDs per strip)
– Touch Function: Dual-side touch-slider zones with four detection points
– Power Supply: 5V DC via USB-C port
– Power Consumption:
– Standby Current: 14.92mA without controller
– Operating Current: 578.47mA at maximum volume with an IoT controller
– Dimensions: 83.6 x 83.6 x 56.7 mm
– Weight: 100.7 grams
– Temperature Range: -10°C ~ 60°C
The design resembles the M5Stack “AI Pyramid Computer Box” AI mini PC from last month, but apart from the form factor, the Echo Pyramid serves as a hybrid smart speaker for audio applications. M5Stack offers detailed hardware documentation, including schematics, a pinout diagram, an Arduino library, and tutorials for Home Assistant, Xiaozhi Voice Assistant, and Bluetooth speaker applications, accessible on the documentation page.
The Echo Pyramid is available for $24.90 on AliExpress or the M5Stack store. A compatible IoT controller is necessary if one isn’t already owned, available on AliExpress with prices from $7.50 to $24.50, each offering unique features like displays and cameras. There are also other ESP32-based smart speaker options, such as the Waveshare ESP32-S3-AUDIO-Board or Espressif Systems EchoEar. The Echo Pyramid might deliver superior audio quality and features touch-sensitive slider areas offering intuitive control operations.
Jean-Luc began CNX Software in 2010, transitioning from a software engineering management role to full-time writing by 2011.
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