The M5Stack AtomS3U ESP32S3 Development Kit is a U disk form ESP32-S3 multi-function development board, using Espressif's ESP32S3 main control chip, dual-core Xtensa LX7 processor, main frequency 240MHz and built-in Wi-Fi function. Its interfaces include a USB-A port (support OTG), one Grove port, a 6Pin@2.54mm header (including four GPIOs), peripherals include 1PDM microphone, one IR tube, and one programmable RGB-LED. The product can be used in scenarios such as human-computer interaction, voice input/recognition (STT), and IO control. Features * 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 Specifications Resources Parameters MCU ESP32-S3FN8@Xtensa LX7,WIFI,OTG,CDC Microphone SPM1423 interface USB-A Grove interface PORTA 2.54-6P interface GND/VIN5V/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 x 20 x 10mm Package Size 68 x 21 x 11mm Product Weight 8.4g Package Weight 10.6g Resources * Product Wiki * ESP32S3 * SPM1423 Package Contents * 1x AtomS3U ESP32S3 Development Kit https://elecena.pl/product/23623731/m5stack-atoms3u 2023-06-09 https://elecena.pl/product/23623731/m5stack-atoms3u 2023-12-27 https://elecena.pl/product/23623731/m5stack-atoms3u 2024-09-18 https://elecena.pl/product/23623731/m5stack-atoms3u 2024-11-29 https://elecena.pl/product/23623731/m5stack-atoms3u 2024-11-30 https://elecena.pl/product/23623731/m5stack-atoms3u 2025-08-06 https://elecena.pl/product/23623731/m5stack-atoms3u 2025-11-28 https://elecena.pl/product/23623731/m5stack-atoms3u 2025-11-29