M5Stack ATOM EchoS3R Smart Speaker Development Kit

The ATOM EchoS3R is a compact, programmable smart speaker development kit specifically designed for intelligent voice control and human-machine interaction. At its core is a powerful ESP32-S3 dual-core microcontroller running at 240 MHz, providing 2.4 GHz Wi-Fi connectivity. Additionally, it features 8 MB of Flash and 8 MB of PSRAM, ensuring high performance and ample memory for complex IoT and AI applications. The device is ideal for voice interaction scenarios such as AI voice assistants or smart home controls. With its integrated audio components, the ATOM EchoS3R can clearly capture voice commands and deliver high-quality playback, enabling an optimal user experience. Its compact dimensions (24 × 24 × 16.8 mm) and lightweight of just 9.3 g allow for seamless integration into nearly any project, from a personal voice assistant on your desk to voice control in a connected home. Furthermore, the module includes an integrated IR transmitter, allowing conventional devices (e.g., TV or air conditioner) to be controlled by voice. Developers benefit from support for multiple programming platforms (Arduino, MicroPython/UiFlow, ESP-IDF), significantly simplifying the setup and prototyping process.

Technical Specifications:
Manufacturer: M5Stack
Manufacturer SKU: C126-ECHO
Processor: ESP32-S3-PICO-1-N8R8 (Dual-Core 32-bit microcontroller, 240 MHz)
Memory: 8 MB Flash, 8 MB PSRAM
Connectivity: Wi-Fi 2.4 GHz (802.11 b/g/n)
Audio Codec: ES8311 (24-Bit, I2S)
Audio Amplifier: NS4150B (Class D)
Microphone: MEMS, SNR 65 dB
Speaker: Integrated, 8 Ω / 1 W
Infrared: Integrated IR transmitter (GPIO 47)
Power Supply: 5 V DC via USB-C (no battery)
Operating Temperature: 0 °C to 40 °C
Dimensions: 24.0 × 24.0 × 16.8 mm.