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    CONTENTS

    Core Metal

    SKU:C001-CNC

    Description

    Core Metal is a limited edition metal CNC commemorative version of the M5Stack Basic host. It uses the Espressif ESP32 chip, equipped with 2 low-power Xtensa® 32-bit LX6 microprocessors, with a main frequency of up to 240 MHz. It has an onboard 16 MB Flash memory combination, integrated with a 2.0-inch full-color HD IPS display panel, speaker, TFCard slot, and other peripherals. The full-cover shell ensures circuit operation stability even in complex industrial application scenarios. The internal bus provides a variety of commonly used interface resources (ADC/DAC/I2C/UART/SPI, etc.), with a 15 x IO breakout on the bottom bus, offering strong expandability. It is suitable for various product prototype development, industrial control, and smart building application scenarios.

    Tutorial

    UIFlow UIFlow
    UIFlow
    This tutorial shows how to control the Basic device via the UIFlow graphical programming platform.
    UiFlow2 UiFlow2
    UiFlow2
    This tutorial shows how to control the Basic device via the UiFlow2 graphical programming platform.
    Arduino IDE Arduino IDE
    Arduino IDE
    This tutorial shows how to program and control the Basic device using the Arduino IDE.

    Features

    • Developed based on ESP32
    • 16M Flash
    • Integrated full-color HD IPS display panel and various hardware peripherals
    • Rich resource interfaces, compatible with M5Stack stacking module system and sensor system, extremely expandable.
    • Development Platform
      • UiFlow1
      • UiFlow2
      • Arduino IDE
      • ESP-IDF
      • PlatformIO

    Includes

    • 1 x Core Metal

    Applications

    • IoT Controller
    • Maker DIY Projects
    • Smart Home Control

    Specifications

    Specification Parameter
    SoC ESP32-D0WDQ6-V3@Dual-core Processor, 240MHz Main Frequency
    DMIPS 600
    SRAM 520KB
    Flash 16MB
    Wi-Fi 2.4 GHz Wi-Fi
    Power Input 5V@500mA
    Interface USB Type-C x1, I2C x1
    IO G21, G22, G23, G19, G18, G3, G1, G16, G17, G2, G5, G25, G26, G35, G36
    Buttons Physical Buttons x 3
    LCD Screen 2.0"@320 x 240 ILI9342C IPS Panel, Max Brightness 853nit
    Speaker 1W-0928
    USB Chip CH9102F
    Antenna 2.4G 3D Antenna
    Shell Material Aluminum Alloy
    Product Size 54.0 x 54.0 x 18.0mm
    Product Weight 42.0g
    Package Size 95.0 x 65.0 x 25.0mm
    Gross Weight 43.5g

    Learn

    Power On/Off

    Power On/Off Operation
    Power On: Single click the red power button on the left
    Power Off: Quickly double-click the red power button on the left
    USB Power: By default, when USB powered, the device cannot be turned off

    Antenna Signal Strength Explanation

    Schematics

    PinMap

    LCD Screen & TF Card

    LCD Pixels: 320x240 TF Card supports up to 16GB

    ESP32-D0WDQ6-V3 G23 G19 G18 G14 G27 G33 G32 G4
    ILI9342C MOSI/MISO / CLK CS DC RST BL
    TF Card MOSI MISO CLK / / / / CS

    Buttons & Speaker

    ESP32-D0WDQ6-V3 G39 G38 G37 G25
    Button Pin BUTTON A BUTTON B BUTTON C
    Speaker / / / Speaker Pin

    GROVE Interface A & IP5306

    The power management chip (IP5306) is a custom I2C version, with an I2C address of 0x75. Click here to view the IP5306 register manual.

    ESP32-D0WDQ6-V3 G22 G21 5V GND
    GROVE A SCL SDA 5V GND
    IP5306 (0x75) SCL SDA 5V GND

    IP5306 Charging/Discharging, Voltage Parameters

    Charging Discharging
    0.00 ~ 3.40V -> 0% 4.20 ~ 4.07V -> 100%
    3.40 ~ 3.61V -> 25% 4.07 ~ 3.81V -> 75%
    3.61 ~ 3.88V -> 50% 3.81 ~ 3.55V -> 50%
    3.88 ~ 4.12V -> 75% 3.55 ~ 3.33V -> 25%
    4.12 ~ / -> 100% 3.33 ~ 0.00V -> 0%

    ESP32 ADC/DAC

    ADC1 ADC2 DAC1 DAC2
    8 Channels 10 Channels 2 Channels 2 Channels
    G32-39 G0/2/4/12-15/25-27 G25 G26

    HY2.0-4P

    HY2.0-4P Black Red Yellow White
    PORT.A GND 5V G21 G22
    PORT.B GND 5V G26 G36
    PORT.C GND 5V G17 G16

    M5-Bus

    FUNC PIN LEFT RIGHT PIN FUNC
    GND 1 2 G35 ADC
    GND 3 4 G36 ADC
    GND 5 6 RST EN
    MOSI G23 7 8 G25 DAC/SPK
    MISO G19 9 10 G26 DAC
    SCK G18 11 12 3V3
    RXD0 G3 13 14 G1 TXD0
    RXD2 G16 15 16 G17 TXD2
    Int SDA G21 17 18 G22 Int SCL
    GPIO G2 19 20 G5 GPIO
    I2S_SK G12 21 22 G13 I2S_WS
    I2S_OUT G15 23 24 G0 I2S_MK
    HPWR 25 26 G34 I2S_IN
    HPWR 27 28 5V
    HPWR 29 30 BAT

    For more information on pin allocation and pin remapping, please refer to the ESP32 datasheet

    Model Size

    module size

    Datasheets

    Softwares

    Arduino

    UiFlow1

    UiFlow2

    PlatformIO

    [env:m5stack-core]
platform = espressif32@6.7.0
board = m5stack-core-esp32
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
    -DCORE_DEBUG_LEVEL=5
lib_deps =
    M5Unified=https://github.com/m5stack/M5Unified

    USB Driver

    Driver Download
    Click the link below to download the driver for your operating system. There are currently two driver chip versions, CP34X (for CH9102) driver package. After extracting the package, select the installation package for your operating system's bit version for installation. (If you are unsure about the USB chip used in your device, you can install both drivers. CH9102_VCP_SER_MacOS v1.7 may show an error during installation, but the installation is actually complete, just ignore it.) If you encounter issues with downloading programs (timeout or Failed to write to target RAM), try reinstalling the device driver.
    Driver Name Applicable Driver Chip Download Link
    CH9102_VCP_SER_Windows CH9102 Download
    CH9102_VCP_SER_MacOS v1.7 CH9102 Download

    Easyloader

    Easyloader Download Link Note
    Core Metal Test Easyloader download /

    Video

    Version Change

    Release Date Product Changes Note
    2023.4 Upgraded to v2.7 The screen was changed to glass for a clearer display; the Grove port added a boost function for stable 5.1V output and better load stability; added a battery power switch
    2020.6 Flash size changed from 4MB to 16MB (Core2.5) /
    2020.3 Battery capacity changed from 150mAh to 110mAh (Core2.4) /
    2019.7 TN screen changed to IPS screen (Core2.2) Please upgrade your M5Stack library to the latest version (v0.2.8 or above) to solve the screen color inversion problem
    2017.7 First release (Core1.4) /
    Note
    Devices with 2018.2A PCB version do not support C2C (Type-C to Type-C) connection or PD power supply.