Description

ATOM U is a compact and low-power consumption speech recognition IoT development kit. Powered by an chipset, it features two low-power Xtensa 32-bit LX6 microprocessors with a main frequency of up to 240MHz. With its built-in USB-A interface, IR emitter, and programmable RGB LED, ATOM U offers a versatile and user-friendly development experience.

ATOM U is designed for plug-and-play convenience, making program uploading and downloading a breeze. It integrates Wi-Fi connectivity and a high-quality digital microphone (SPM1423, PDM) for clear sound recording. This makes it perfectly suited for Human-Machine Interaction (HMI) and Speech-to-Text (STT) applications.

With ATOM U, you can take advantage of the UIFlow graphical programming platform, enabling scripting-free development and seamless cloud integration. It is fully compatible with popular development platforms such as Arduino, MicroPython, and ESP32-IDF, allowing you to quickly build a wide range of applications.

ATOM U offers high integration with various components, including a USB-A port for programming and power supply, an IR emitter, programmable RGB LED (x1), and a button (x1). Its finely tuned RF circuit ensures stable and reliable wireless communication. Furthermore, ATOM U provides strong expandability, giving you easy access to M5Stack's comprehensive hardware and software system. This opens up endless possibilities for building innovative IoT solutions and exploring new horizons in the world of embedded development.

Product Features

ESP32-PICO-D4 (2.4GHz Wi-Fi dual mode)
Integrated programmable RGB LED and button
Compact design
Built-in IR emitter
Expandable pinout and GROVE port
Development platform:

Includes

1x ATOM U

Application

IoT controller
Voice recording, Speech-to-Text services

Specification

Specifications	Parameters
ESP32-PICO-D4	240MHz dual core, 600 DMIPS, 520KB SRAM, 2.4G Wi-Fi
Microphone	SPM1423
Microphone sensitivity	94dB SPL@1KHz Typical value: -22dBFS
Microphone signal-to-noise ratio	94dB SPL@1KHz, A-weighted Typical value: 61.4dB
Standby working current	40.4mA
Support input sound frequency	100Hz ~ 10KHz
Support PDM clock frequency	1.0 ~ 3.25MHz
Net weight	8.4g
Gross weight	10.6g
Product size	52 * 20 * 10mm
Packing size	68 * 21 * 11mm

Driver Installation

Connect the device to the PC, open the device manager to install for the device. Take the win10 environment as an example, download the driver file that matches the operating system, unzip it, and install it through the device manager. (Note: In some system environments, the driver needs to be installed twice for the driver to take effect. The unrecognized device name is usually M5Stack or USB Serial. Windows recommends using the driver file to install directly in the device manager (custom Update), the executable file installation method may not work properly).