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Discontinued Atomu ESP32 Development Board with USB-A Interface

Original price was: $12.50.Current price is: $8.33.

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SKU: K117 Category: Brand:

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Product Status Notice This product is EOL (End of Life). Please order the new version: AtomS3U /* ===== Scoped Description Style ===== */.product-description.rte { font-family: -apple-system, BlinkMacSystemFont, “Segoe UI”, Roboto, “Helvetica Neue”, Arial, sans-serif; color: #2c2c2c; line-height: 1.65; font-size: 16px;}/* ===== Headings ===== */.product-description.rte h2 { font-size: 1.8em; color: #0D47A1; border-left: 4px solid #1f6fe5; padding-left: 12px; margin-top: 32px; margin-bottom: 16px;}/* ===== H3 Titles Optimization ===== */.product-description.rte h3 { font-size: 1.4em; color: #0D47A1; margin-top: 24px; margin-bottom: 12px; font-weight: 500; padding-bottom: 6px; border-bottom: 2px solid #e6e6e6;}/* ===== Paragraphs ===== */.product-description.rte p { margin-bottom: 20px; line-height: 1.8; color: #4a4f57; font-size: 16px;}/* ===== Paragraph Images (only in description) ===== */.product-description.rte img { display: block; max-width: 100%; height: auto; margin: 24px auto; border-radius: 12px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);}/* ===== Lists ===== */.product-description.rte ul { padding-left: 20px; margin-bottom: 16px; list-style-type: disc;}.product-description.rte li { margin-bottom: 6px;}/* ===== Links ===== */.product-description.rte a { color: #0288D1; text-decoration: none; transition: color 0.3s ease;}.product-description.rte a:hover { color: #01579B;}/* ===== M5Stack-style Spec Table ===== */.product-description.rte .table-container { width: 100%; margin: 24px 0; overflow-x: auto;}.product-description.rte .table-container table { width: 100%; border-collapse: collapse; font-family: inherit; font-size: 14px; color: #2c2f36; background-color: #ffffff; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);}.product-description.rte .table-container thead th { background: #1f6fe5; color: #ffffff; padding: 14px 16px; text-align: center; font-weight: 600; border: none; vertical-align: middle;}.product-description.rte .table-container td { padding: 14px 16px; border-bottom: 1px solid #e6ebf2; vertical-align: middle;}.product-description.rte .table-container tbody td:first-child { width: 36%; text-align: center; font-weight: 500; color: #4a4f57; background-color: rgba(31, 111, 229, 0.02);}.product-description.rte .table-container tbody tr:nth-child(even) { background-color: #f7f9fc;}@media (hover: hover) { .product-description.rte .table-container tbody tr:hover { background-color: #eef3ff; }}/* ===== Learn & Documents Button ===== */.product-description.rte #learn-and-documents-btn { display: inline-flex; align-items: center; padding: 6px 14px; background-color: #1f6fe5; color: #ffffff; font-weight: 600; border-radius: 6px; margin-top: 8px; text-decoration: none; transition: background 0.3s ease;}.product-description.rte #learn-and-documents-btn:hover { background-color: #1661c1;}/* ===== Responsive Design for Smaller Screens (with table adjustments) ===== */@media screen and (max-width: 768px) { .product-description.rte .table-container table, .product-description.rte .table-container thead, .product-description.rte .table-container tbody, .product-description.rte .table-container th, .product-description.rte .table-container td, .product-description.rte .table-container tr { display: block; width: 100%; } .product-description.rte .table-container thead { display: none; } .product-description.rte .table-container tbody tr { padding: 12px 0; border-bottom: 1px solid #e6ebf2; } .product-description.rte .table-container tbody td { padding: 8px 16px; border: none; text-align: left; } .product-description.rte .table-container tbody td:first-child { width: 100%; background: none; color: #1f6fe5; font-weight: 600; padding-top: 16px; } .product-description.rte .table-container tbody td:last-child { padding-bottom: 16px; color: #2c2f36; line-height: 1.6; } /* Ensure button appears correctly on mobile */ .product-description.rte #learn-and-documents-btn { font-size: 14px; padding: 8px 16px; }}

Description

AtomU is an ultra-compact and flexible IoT voice-recognition development board powered by Espressif’s ESP32. It is equipped with two low-power Xtensa® 32-bit LX6 microprocessors running at up to 240 MHz. The board integrates peripherals such as a USB Type-A interface, IR transmitter, and a programmable RGB LED, allowing true plug-and-play use for uploading, downloading, and debugging firmware.
With its built-in Wi-Fi module and on-board digital microphone SPM1423 (PDM), AtomU enables clear audio recording, making it ideal for human–machine interaction and speech-to-text (STT) applications in various IoT scenarios.

Features

  • ESP32-PICO-D4 (2.4 GHz Wi-Fi)
  • USB-A programming/power interface
  • Integrated programmable RGB LED and button
  • Ultra-compact body
  • Built-in IR transmitter
  • Expandable pins and GROVE interface
  • Development Platform
    • UiFlow1
    • UiFlow2
    • Arduino IDE
    • ESP-IDF
    • PlatformIO

Includes

  • 1 x AtomU

Applications

  • IoT controller
  • Voice recording & cloud STT recognition

Specifications

Specification Parameter
SoC ESP32-PICO-D4@Dual-core processor, 240MHz
DMIPS 600
SRAM 520KB
Wi-Fi 2.4 GHz Wi-Fi
Microphone SPM1423
Microphone Sensitivity 94 dB SPL @ 1 kHz, Typ.: −22 dBFS
Microphone SNR 94 dB SPL @ 1 kHz, A-weighted, Typ.: 61.4 dB
Standby Operating Current 40.4 mA
Supported Input Frequency 100 Hz ~ 10 kHz
Supported PDM Clock 1.0 ~ 3.25 MHz
Product Size 53.0 x 20.0 x 10.3mm
Product Weight 8.6 g
Package Size 114.2 x 65.6 x 20.6mm
Gross Weight 16.6 g

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