AtomS3Uis aU diskformESP32-S3multi-function development board, using Espressif's ESP32S3 main control chip, dual-core Xtensa LX7 processor, main frequency 240MHz, built-in WiFi function. Its interfaces include USB-A port(support OTG),1 Grove port, 6Pin@2.54mm header (including 4 GPIOs); peripherals include 1PDM microphone, 1IRtube, and 1 programmableRGB-LED. The product can be used in scenarios such as human-computer interaction, voice input/recognition (STT), and IO control.


  • ESP32-S3FN8@240Mhz,Xtensa LX7,WIFI,OTG,CDC
  • Integrated programmable RGB LEDs and buttons
  • Built-in infrared emitter
  • Expandable pin interface with GROVE
  • Development platform: MicroPython,Arduino


  • 1x AtomS3U


  • IoT controllers
  • Voice recording, cloud STT recognition


Resources Parameters
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 signal-to-noise ratio 94dB SPL@1KHz, A-weighted Typical: 61.4dB
Support for entering sound frequencies 100Hz ~ 10KHz
Supports PDM clock frequency 1.0 ~ 3.25MHz
RGB WS2812
Product Size 52 * 20 * 10mm
Package Size 68 * 21 * 11mm
Product Weight 8.4g
Package Weight 10.6g


  • SPM1423 - PDM
ATOM S3U G38 G39 3.3V GND
  • IR & WS2812 & BUTTON
ATOM S3U G12 G35 G41
IR TX / /
WS2812 / DIN /
  • HY2.0-4P
  • Ext Port-2.54 6P
ATOM S3U GND VIN_5V G14 G17 G42 G40



Module Size

module size




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