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

This tutorial will introduce you to controlling the Basic device through the UIFlow graphical programming platform

UiFlow2

This tutorial will introduce you to controlling the Basic device through the UiFlow2 graphical programming platform

Arduino IDE

This tutorial will introduce you to programming the Basic device through 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-V3,240MHz dual core，600 DMIPS，520KB SRAM，Wi-Fi
Flash	16MB
Input Power	5V @ 500mA
Interface	TypeC 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
Case Material	Aluminum alloy
Product Size	54 x 54 x 18mm
Package Size	95 x 65 x 25mm
Product Weight	42g
Package 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

M5Core Schematics PDF

1/6

PinMap

LCD Screen & TF Card

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

ESP32-D0WDQ6-V3	GPIO23	GPIO19	GPIO18	GPIO14	GPIO27	GPIO33	GPIO32	GPIO4
ILI9342C	MOSI/MISO	/	CLK	CS	DC	RST	BL
TF Card	MOSI	MISO	CLK	/	/	/	/	CS

Buttons & Speaker

ESP32-D0WDQ6-V3	GPIO39	GPIO38	GPIO37	GPIO25
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	GPIO22	GPIO21	5V	GND
GROVE A	SCL	SDA	5V	GND
IP5306	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%

PORT

PORT	PIN	Note:
PORT-A(Red)	G21/22	I2C
PORT-B(Black)	G26/36	DAC/ADC
PORT-C(Blue)	G16/17	UART

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	G16	G17

M-BUS

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

Model Size

Datasheets

Softwares

Arduino

UiFlow1

Core Metal UiFlow1 Quick Start

UiFlow2

Core Metal UiFlow2 Quick Start

PlatformIO

[env:m5stack-core]
platform = espressif32@6.3.2
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

MacOS Port Selection

In MacOS, there may be two selectable ports, please choose the port named wchmodem when using.

Easyloader

Easyloader	Download Link	Note
Core Metal Test Easyloader	download	/

Video

Version Change

Release Date	Product Changes	Notes
2017.7	First Release (Core1.4)	/
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 screen color inversion issues
2020.3	Battery capacity changed from 150mAh to 110mAh (Core2.4)	/
2020.6	Flash size changed from 4MB to 16MB (Core2.5)	/
2023.4	Upgraded to v2.7 version	Screen changed to glass screen, clearer display, Grove port added boost function for stable 5.1v output, more stable with load; added battery power switch

Note: Devices with 2018.2A PCB version do not support C2C (TypeC to TypeC) connection and PD power supply.