AtomS3U
SKU:K125
Description
AtomS3U is a USB flash drive-shaped multifunctional development board featuring the ESP32-S3 chip from Espressif. It has a dual-core Xtensa LX7 processor with a main frequency of 240 MHz and built-in Wi-Fi functionality. Its interfaces include a USB Type-A port (supports OTG), 1 Grove port, a [email protected] header (including 4 GPIOs), and peripherals such as 1 PDM microphone, 1 infrared emitter, and 1 programmable RGB-LED. This product can be used in scenarios such as IoT human-computer interaction, voice input/recognition (STT), and IO control.
Features
- ESP32-S3FN8@240Mhz, Xtensa LX7, WIFI, USB-OTG
- Integrated programmable RGB LED and button
- Built-in infrared emitter
- Expandable pins and GROVE interface
- Development platforms
- MicroPython
- Arduino
- UIFlow
Includes
Applications
- IoT controller
- Voice recording, cloud STT recognition
Specifications
| Specification | Parameter |
|---|
| MCU | ESP32-S3FN8@Xtensa LX7, WIFI, OTG, CDC |
| Microphone | SPM1423 |
| Interface | USB-A |
| Grove Interface | PORTA |
| 2.54-6P Interface | GND/VIN_5V/G14/G17/G42/G40 |
| Microphone Sensitivity | 94dB SPL@1KHz Typical: -22dBFS |
| Microphone SNR | 94dB SPL@1KHz, A-weighted Typical: 61.4dB |
| Supported Input Sound Frequency | 100Hz ~ 10KHz |
| Supported PDM Clock Frequency | 1.0 ~ 3.25MHz |
| RGB Light | WS2812 |
| Product Dimensions | 53.0 x 20.0 x 10.3mm |
| Product Weight | 8.3g |
| Package Dimensions | 114.2 x 65.6 x 20.6mm |
| Gross Weight | 16.3g |
Schematics
PinMap
SPM1423 - PDM
| AtomS3U | G38 | G39 | 3.3V | GND |
|---|
| SPM1423 | MIC_CLK | MIC_DATA | VCC | GND |
| AtomS3U | G12 | G35 | G41 |
|---|
| IR | TX | / | / |
| WS2812 | / | DIN | / |
| BUTTON | / | / | SW |
HY2.0-4P
| AtomS3U | G1 | G2 | 5V | GND |
|---|
| PORT-A(Red) | SCL | SDA | VCC | GND |
| PORT-B(Black) | DAC | ADC | VCC | GND |
| PORT-C(Blue) | RX | TX | VCC | GND |
Ext Port-2.54 6P
| AtomS3U | GND | VIN_5V | G14 | G17 | G42 | G40 |
|---|
Model Size
Datasheets
Softwares
Arduino
[env:m5stack-atoms3]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
-DESP32S3
-DCORE_DEBUG_LEVEL=5
-DARDUINO_USB_CDC_ON_BOOT=1
-DARDUINO_USB_MODE=1
lib_deps =
M5Unified=https://github.com/m5stack/M5Unified
Video
