M5Stack Core2 ESP32 IoT Development Kit

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Product Link

M5Stack Core2 ESP32 IoT Development Kithttps://x.com/openelabio

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. Wi-Fi 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.

Operations: Power on: One click the power button on the left

Power off: Long press the left power button for 6 seconds

Reset: Click the RST button on the bottom side

Features

• ESP32-based, built-in Wi-Fi

• 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

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
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-092
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/CH9102F (two chip versions, there is no difference in function and use)
DC-DC Boost	SY7088
TF card slot	16G Max
Lithium Battery	500mAh @ 3.7V
Antenna	2.4G 3D antenna
Operating temperature	0°C to 60°C
Base screw specifications	Hexagon socket countersunk head M3
Internal PCB board reserved interface	Battery interface (specification: 1.25mm-2P) USB line interface (specification: 1.25mm-4P)
Net Weight	52g
Gross Weight	76g
Product Size	54 x 54 x 16.5mm
Package Size	75 x 60 x 20mm
Case Material	Plastic ( PC )

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 (I2C Addr: 0x38)

ESP32 chip	GPIO21	GPIO22	GPIO39
AXP192				AXP_IO4
FT6336U	SDA	SCL	INT	RST

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/CH9102F	RXD	TXD

Internal I2C connection

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

M5Core2 M-BUS Schematic diagram

M5Core2 BUS(compared to M5Stack)

M5PORT DEFINE

PORT	PIN	Note:
PORT-A(Red)	32/33	I2C
PORT-B(Black)	26/36	DAC/AD
PORT-C(Blue)	13/14	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

Charging current measured value

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

Schematic

Module Size