Core Metal
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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
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
- Platform.IO
Includes
- 1 x Core Metal
Applications
- IoT Controller
- Maker DIY Projects
- Smart Home Control
Specifications
| Specification | Parameter |
|---|---|
| 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 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 Chip | 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 Chip | 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 Chip | 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 |
M-BUS
For more information on pin allocation and pin remapping, please refer to the ESP32 datasheet
Model Size
Datasheets
Softwares
Arduino
UiFlow1
UiFlow2
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 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
Introduction to M5Stack
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 |
