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.
CH9102
and CP210x
) that are compatible with two ICs at the same time to ensure that the device drivers work normally.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 vibration sensor of M5Core2 and M5 Base series are incompatible in mechanical design. Please do not stack them together.
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 ) |
CP2104
version)/CP34X (for CH9102
version) driver compressed package. After decompressing the compressed package, select the installation package corresponding to the number of operating systems to install. (If you are not sure of the USB chip used by your device, you can install both drivers at the same time. During the installation process of CH9102_VCP_SER_MacOS v1.7
, an error may occur, but the installation is actually completed, just ignore it.) When using it, if If the program cannot be downloaded normally (the prompt is overtime or Failed to write to target RAM), you can try to reinstall the device driver.Driver name | Applicable driver chip | Download link |
---|---|---|
CP210x_VCP_Windows | CP2104 | Download |
CP210x_VCP_MacOS | CP2104 | Download |
CP210x_VCP_Linux | CP2104 | Download |
CH9102_VCP_SER_Windows | CH9102 | Download |
CH9102_VCP_SER_MacOS v1.7 | CH9102 | Download |
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.
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 |
PORT | PIN | Note: |
---|---|---|
PORT-A(Red) | 32/33 | I2C |
PORT-B(Black) | 26/36 | DAC/AD |
PORT-C(Blue) | 13/14 | UART |
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
Charging current measured value
charging current | Fully charged current(Power OFF) | Fully charged current(Power ON) |
---|---|---|
0.219A | 0.055A | 0.147A |
Datasheet
API
The book " ESP32 formats and communication protocols " features the M5Stack Core2 module in several Chapters. The M5Stack Core2 module incorporates a touch LCD screen, Bluetooth and Wi-Fi communication, a microphone and speaker, as well as an accelerometer and gyroscope, making the M5Stack Core2 module extremely versatile. The book build projects using communication protocols ranging from those connecting your smart watch to your mobile phone (BLE) to long range communication with satellites circling above the Earth (LoRa) and transmission of audio signals between devices (I2S). QR codes are used to control external devices over the internet, while the ESP-MESH and ESP-NOW protocols enable communication between microcontrollers without an internet connection.
Release Date | Product Change | Note: |
---|---|---|
2020.6 | Initial public release< | / |
2021.7 | USB Chip changed from CP2104 to CH9102F | The actual delivery has two chip versions, CP2104/CH9102F, and there is no difference in function and use |
2023.27 | Cancel RTC coin cell batteries | Does not affect the timing function |
2023.10 | Lithium battery capacity changed to 500mAh | / |
for (auto gpio : (const uint8_t[]){18, 19, 23}) {
*(volatile uint32_t*)(GPIO_PIN_MUX_REG[gpio]) |= FUN_DRV_M;
gpio_pulldown_dis((gpio_num_t)gpio);
gpio_pullup_en((gpio_num_t)gpio);
}
#include <M5Core2.h>
void setup() {
M5.begin();
}
void loop() {
Serial.printf("Bat Voltage:%f\n", M5.Axp.GetBatVoltage());
delay(500);
}