M5Stack AtomU ESP32 Development Kit with USB-A


In stock

SKU: 1223440
  1. product: Development Kit with USB-A
  2. Model: ESP32
  3. ESP32-PICO-D4:  240MHz dual core, 600 DMIPS, 520KB SRAM, 2.4G Wi-Fi
  4. Support PDM clock frequency 1.0 ~ 3.25MHz
  5. Standby working current 40.4mA
  6. Product size:  52 x 20 x 10mm


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In stock

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Brand: M5 STACK
Category: IoT Development Boards

ATOM U is a compact low-power consumption speech recognition IoT development kit. It adopts an ESP32 chipset, equipped with 2 low-power Xtensa 32-bit LX6 microprocessors with the main frequency of up to 240MHz. Built-in USB-A interface, IR emitter, programmable RGB LED. Plug-and-play, easy to upload and download programs. Integrated Wi-Fi and digital microphone SPM1423(I2S) for the clear sound record. suitable for HMI, Speech-to-Text (STT).


    1. Low Code development
    2. High integration
    3.  ATOM U supports UIFlow graphical programming platform
    4. ATOM U contains a USB-A port for programming/power supply
    5. Strong expandability
    6. ATOM U is easy access to M5Stack’s hardware and software system
    7. ESP32-PICO-D4 (2.4GHz Wi-Fi dual mode)
    8. Integrated programmable RGB LED and button
    9. Compact design
    10. Built-in IR emitter
    11. Expandable pinout and GROVE port
    12. Development platform:
      • UIFlow
      • MicroPython
      • Arduino

Packages Includes:

1 x M5Stack Atom U ESP32 Development Kit with USB-A

SKU: 1223440 Category:

M5 Stack

Product Type

Development kit with USB


240MHz dual core, 600 DMIPS, 520KB SRAM, 2.4G Wi-Fi



Microphone sensitivity

94dB SPL@1KHz Typical value: -22dBFS

Standby working current


Microphone signal-to-noise ratio

94dB SPL@1KHz, A-weighted Typical value: 61.4dB

Frequency Range

100Hz ~ 10KHz

Support PDM clock frequency

1.0 ~ 3.25MHz

Weight (g)


Product Dimension

52 x 20 x 10mm

Shipment Weight

0.011 kg

Shipment Dimensions

6 × 2 × 1 cm

15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China

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