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M5Stack AtomS3U ESP32S3 USB-A Development Board High Performance WIFI OTG Port UIFlow MicroPython Development Kit
The M5Stack AtomS3U ESP32S3 USB-A Development Board High Performance WIFI OTG Port UIFlow MicroPython Development Kit by M5Stack is a mid-range product designed for everyday users.
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About This Product
The M5Stack AtomS3U ESP32S3 USB-A Development Board High Performance WIFI OTG Port UIFlow MicroPython Development Kit by M5Stack is a mid-range designed for everyday users. It delivers reliable performance at an accessible price.
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Specification:
Brand: M5Stack
Product Name: AtomS3U ESP32-S3 USB Development Kit
SoC: ESP32‑S3FN8, dual‑core Xtensa LX7 @ 240 MHz, Wi‑Fi, USB‑OTG, CDC
Microphone: SPM1423 digital MEMS
USB Interface: USB‑A plug (direct PC/host connection)
Grove / HY2.0‑4P Port: PORTA (G1, G2, 5V, GND)
2.54 mm 6‑Pin Header: GND / VIN / 5V / G14 / G17 / G42 / G40
Microphone Sensitivity: 94 dB SPL @ 1 kHz, typical −22 dBFS
Microphone SNR: 94 dB SPL @ 1 kHz, A‑weighted typical 61.4 dB
Supported Audio Input Band: 100 Hz – 10 kHz
On‑board Components: IR LED (G12), RGB LED (G35), user button (G41), 3D antenna
Programming Support: UIFlow, ARDUIN0, MicroPython
Dimensions: 53 × 20 × 10.3 mm (approx. 2.08 × 0.78 × 0.4 in)
Weight: about 8.5g
Introduction:
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 6Pin@2.54mm 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:
1. USB flash‑drive style ESP32‑S3 development board, plugs directly into computers or USB hubs.
2. Built‑in Wi‑Fi, microphone, IR transmitter and RGB LED for voice, remote control and status indication projects.
3. On‑board HY2.0‑4P Grove port and 2.54 mm 6‑pin header for quick expansion with sensors and actuators.
4. Supports USB‑OTG, making it suitable as a USB device or simple USB tool in your projects.
5. Compatible with UIFlow graphical programming, ArduinoIDE and MicroPython for flexible development.
6. Ideal for cloud speech‑to‑text applications, IoT controllers, human‑computer interaction and prototyping.
Package Includes:
1 x M5Stack AtomS3U USB ESP32-S3 Development Board
