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 shows how to control the Basic device via the UIFlow graphical programming platform.

UiFlow2

This tutorial shows how to control the Basic device via the UiFlow2 graphical programming platform.

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

M5Core Schematics PDF

1/6

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	G16	G17

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

Datasheets

Softwares

Arduino

UiFlow1

Core Metal UiFlow1 Quick Start

UiFlow2

Core Metal UiFlow2 Quick Start

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.