M5Core2

SKU:K010

Tutorial&Quick-Start

Choose the development platform you want to use, view the corresponding tutorial&quick-Start.

UIFlow Arduino

Description

M5Core2 is the second generation core device in the M5Stack development kit series, which further enhances the functions of the original generation of cores.

The MCU is an ESP32 model D0WDQ6-V3 and has dual core Xtensa® 32-bit 240Mhz LX6 processors that can be controlled separately. WiFi and Bluetooth are supported as standard and it includes an on board 16MB Flash and 8MB PSRAM, USB TYPE-C interface for charging, downloading of programs and serial communication, a 2.0-inch integrated capacitive touch screen, and a built-in vibration motor.

M5Core2 also features a built-in RTC module which can provide accurate timing. The power supply is managed by an AXP192 power management chip, which can effectively control the power consumption of the base and a built-in green LED power indicator helps to notify the user of battery level. The battery capacity has been upgraded to 390mAh, which can power the core for much longer than the previous model.

The M5Core2 retains the TF-card(microSD) slot and speakers. However, in order to ensure higher quality sound output, the I2S digital audio interface power amplifier chip is used to effectively prevent signal distortion. There are independent power and reset buttons on the left side and bottom of the base.

The 3 icons on the front of the screen are capacitive buttons which are programmable. There is a small expansion board on the back of the base with a 6-axis IMU sensor and microphone. The development platform and programming language supported by M5Stack Core2: Arduino, UIFlow (using Blockly, MicroPython language) No matter what level of your development and programming skills, M5Stack will help You gradually turn your ideas into reality.

Power on/off:

  • Power on: click the power button

  • Power off: press the power button for 6s

Restart: Click the RST button at the bottom

Core2 is adopting AXP192 as power chip. Please initialize the 'mbus' mode per the powering method, as below::


//mbus_mode_t:
//kMBusModeOutput:Powered by USB or battery
//kMBusModeInput: Powered by external 5V or DC jack

M5.begin(bool LCDEnable = true, bool SDEnable = true, bool SerialEnable = true, bool I2CEnable = false, mbus_mode_t mode = kMBusModeOutput);

To stack M5Core2 with M5 modules, you need to remove/eliminate the battery bottom of Core2; If you wish to keep I2S Mic, IMU and Battery functions, a M5GO Bottom2 is required.**The CP2104 chip interface is reserved on the PCB of CORE2 to interface with the lithium battery.

Product Features

  • ESP32-based, built-in Bluetooth,WiFi
  • 16M Flash,8M PSRAM
  • Built-in speaker, power indicator, vibration motor, RTC, I2S amplifier, capacitive touch screen, power button, reset button
  • TF card slot (16G Maximum size)
  • Built-in lithium battery, equipped with power management chip
  • Independent small board built-in 6-axis IMU, PDM microphone
  • M-Bus Socket & Pins
  • Program Platform: UIFlow, MicroPython, Arduino

Include

  • 1x M5Stack Core2
  • 1x Type-C USB(20cm)

Applications

  • Internet of things terminal controller
  • Stem education product
  • DIY creation
  • Smart home equipment

Specification

Resources Parameter
ESP32-D0WDQ6-V3 240MHz dual core, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth
Flash 16MB
PSRAM 8MB
Input Voltage 5V @ 500mA
Interface TypeC x 1, GROVE(I2C+I/0+UART) x 1
IPS LCD Screen 2.0"@320*240 ILI9342C
Touch Screen FT6336U
Speaker 1W-0928
LED Green power indicator light
Button Power button, RST button, Virtual screen button*3
Vibration reminder Vibration motor
MIC SPM1423
I2S Power Amplifier NS4168
6-axis IMU MPU6886
RTC BM8563
PMU AXP192
USB Chip CP2104
DC-DC Boost SY7088
TF card slot 16G Max
Lithium Battery 390mAh @ 3.7V
Antenna 2.4G 3D antenna
Operating temperature 32°F to 104°F ( 0°C to 40°C )
Net Weight 52g
Gross Weight 70g
Product Size 54 x 54 x 16mm
Package Size 75 x 60 x 20mm
Case Material Plastic ( PC )

EasyLoader

EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification. Please install the corresponding driver according to the device type. M5Core host Please click here to view the CP210X driver installation tutorial, M5StickC/V/T/ATOM series can be used without driver)

Description:

This case will perform hardware running tests for speakers, wifi, buttons, accelerometer, TF-card(microSD), screen, etc.

PinMap

LCD & TF card

LCD :320x240 TF card Maximum size 16GB

ESP32 Chip GPIO38 GPIO23 GPIO18 GPIO5 GPIO15
AXP192 Chip AXP_IO4 AXP_DC3 AXP_LDO2
ILI9342C MISO MOSI SCK CS DC RST BL PWR
ESP32 Chip GPIO38 GPIO23 GPIO18 GPIO4
TF Card MISO MOSI SCK CS

CAP.TOUCH

ESP32 chip GPIO21 GPIO22 GPIO39
AXP192
FT6336U SDA SCL INT

Mic & NS4168(Speaker)

ESP32 Chip GPIO12 GPIO0 GPIO2 AXP_IO2 GPIO34
NS4168 BCLK LRCK DATA SPK_EN
Mic CLK DATA

AXP Power Indicator Light

AXP192 AXP_IO1 AXP_LDO3
Green LED Vcc
Vibration motor Vcc

RTC

ESP32 Chip GPIO21 GPIO22
AXP192 AXP_PWR
BM8563 SDA SCL INT

IMU(3-axis gyroscope & 3-axis accelerometer)

ESP32 Chip GPIO21 GPIO22
MPU6886 SDA SCL

USB to serial chip

ESP32 Chip GPIO1 GPIO3
CP2104 RXD TXD

Internal I2C connection

ESP32 Chip GPIO21 GPIO22
MPU6886 SDA SCL
AXP192 SDA SCL
BM8563 SDA SCL
FT6336U SDA SCL

Charging current measured value

charging current Fully charged current(Power OFF) Fully charged current(Power ON)
0.219A 0.055A 0.147A

M5Core2 M-BUS Schematic diagram

M5PORT EXPLAIN

PORT PIN Note:
PORT-A(Red) 32/33 I2C

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

For more information about Pin assignment and Pin Remapping, Please refer to ESP32 Datasheet

Schematic

Example

1. Arduino

  • Clickhere to get Arduino code

Tutorial