Core2 v1.1
Description
Core2 V1.1 is an iterative version of Core, with upgraded power IC and a continuation of the classic design of Core2. It is a powerful and user-friendly development board. Core2 V1.1 is equipped with ESP32-D0WDQ6-V3, featuring two independent Xtensa® 32-bit LX6 processors with a clock frequency of up to 240MHz. It supports WiFi functionality and has onboard 16MB Flash and 8MB PSRAM, and supports program downloading via the TYPE-C interface. Its strong configuration can meet the requirements of complex applications.
Core2 V1.1 is equipped with a 2.0-inch integrated capacitive touch screen. The three dots on the front of the screen are part of the touch screen. Users can set the hot zone mapping as three virtual buttons through programming, enabling diverse human-machine interaction experiences. Additionally, Core2 V1.1 has a built-in vibration motor for haptic feedback and vibration alert functionality.
Core2 V1.1 has an integrated RTC module and a dedicated battery for RTC power supply, providing accurate timing functionality. Furthermore, the AXP2101 power management chip effectively controls the power consumption of the device. Core2 V1.1 also has a built-in blue power indicator light, which can be used to implement specific functions or status indications according to the user's application needs. Core2 V1.1 is also equipped with a MicroSD card slot, speaker, and a high-quality I2S digital audio interface power amplifier chip. The expansion board on the back of the device integrates a 6-axis IMU sensor and a microphone, providing additional functionality and possibilities.
USB drive
Note: Core2 currently has two CH9102F A USB chip version, users can install the drivers (
CH9102) that are compatible with two ICs at the same time to ensure that the device drivers work normally.Tutorials & Quick Start
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
- Compatible with multi-platform development:
- UIFlow
- MicroPython
- Arduino
- .NET nanoFramework
- Operating System (RTOS):zephyr
Includes
- 1x Core2 V1.1
- 1x Type-C USB(20cm)
- 1x HEX KEY
Applications
- Internet of things terminal controller
- Stem education product
- DIY creation
- Smart home equipment
Specifications
| Resources | Parameters |
|---|---|
| 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/O+UART) x 1 |
| IPS LCD Screen | 2.0"@320*240 ILI9342C |
| Touch Screen | FT6336U |
| Speaker | 1W(SIZE:0928) |
| LED | Blue 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 | AXP2101 |
| Current Meter | INA3221 |
| USB Chip | CH9102F |
| 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) |
| Case Material | Plastic ( PC ) |
| Product Size | 54.0 x 54.0 x 16.5mm |
| Product Weight | 45.1g |
| Package Size | 80.0 x 59.9 x 21.6mm |
| Gross Weight | 74.3g |
Learn
Power Management
Power Off: Press and hold the left power button for 4 seconds.
Reset: Press the RST button on the bottom side once.
Expansion Modules/Compatibility
Schematics
PinMap
LCD & TF card(LCD :320x240 TF card Maximum size 16GB)
| ESP32 Chip | GPIO38 | GPIO23 | GPIO18 | GPIO5 | GPIO15 | |||
|---|---|---|---|---|---|---|---|---|
| AXP2101 Chip | AXP_ALDO2 | AXP_BLDO1 | AXP_ALDO4 | |||||
| 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 | |
|---|---|---|---|---|
| AXP2101 | AXP_ALDO2 | |||
| FT6336U | SDA | SCL | INT | RST |
Mic & NS4168(Speaker)
| ESP32 Chip | GPIO12 | GPIO0 | GPIO2 | AXP_ALDO3 | GPIO34 |
|---|---|---|---|---|---|
| NS4168 | BCLK | LRCK | DATA | SPK_EN | |
| Mic | CLK | DATA |
AXP Power Indicator Light
| AXP2101 | VRTC | DLDO1 |
|---|---|---|
| Bule LED | Vcc | |
| Vibration motor | Vcc |
RTC
| ESP32 Chip | GPIO21 | GPIO22 | |
|---|---|---|---|
| AXP2101 | AXP_IRQ | ||
| 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 |
|---|---|---|
| CH9102F | RXD | TXD |
Internal I2C connection
| ESP32 Chip | GPIO21 | GPIO22 |
|---|---|---|
| MPU6886 | SDA | SCL |
| AXP2101 | SDA | SCL |
| BM8563 | SDA | SCL |
| FT6336U | SDA | SCL |
| INA3221 | SDA | SCL |
M5PORT DEFINE
| PORT | PIN | NOTE: |
|---|---|---|
| PORT-A(Red) | G32/33 | I2C |
| PORT-B(Black) | G26/36 | DAC/ADC |
| PORT-C(Bule) | G13/14 | UART |
ESP32 ADC/DAC(For more information about Pin assignment and Pin Remapping, Please refer to ESP32 Datasheet )
| ADC1 | ADC2 | DAC1 | DAC2 |
|---|---|---|---|
| 8 Channels | 10 Channels | 2 Channels | 2 Channels |
| G32-39 | G0/2/4/12-15/25-27 | G25 | G26 |
Core2 v1.1 M-BUS Schematic diagram
Core2 v1.1 BUS(compared to M5Stack)
Model Size
Related Link
Softwares
Arduino
Platform.IO
[env:m5stack-core2]
platform = espressif32@6.3.2
board = m5stack-core-esp32
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
-DBOARD_HAS_PSRAM
-mfix-esp32-psram-cache-issue
-DCORE_DEBUG_LEVEL=5
lib_deps =
M5Unified=https://github.com/m5stack/M5Unified
Easyloader
| Easyloader | Download Link | Note |
|---|---|---|
| Core2 v1.1 Factory Test Easyloader | download | / |
USB Driver
CH9102 version. After decompressing the package, select the installation package corresponding to your operating system's bit version for installation. (If you are unsure which USB chip your device uses, you can install both drivers. During the installation of CH9102_VCP_SER_MacOS v1.7, an error may occur, but the installation is actually complete and can be ignored.) If you encounter issues such as failure to download programs properly (e.g., timeout or "Failed to write to target RAM"), try reinstalling the device driver.| Driver Name | Supported Chip | Download Link |
|---|---|---|
| CH9102_VCP_SER_Windows | CH9102 | Download |
| CH9102_VCP_SER_MacOS v1.7 | CH9102 | Download |
wchmodem for use.Video
- This case will perform hardware running tests for speakers, wifi, buttons, accelerometer, TF-card(microSD), screen, etc.
Version Change
| Release Date | Product Changes | Notes |
|---|---|---|
| / | First ReleaseCore2 | / |
| 2023.11 | Core2 v1.1 | Change PMU power management chip to AXP2101+INA3221/ Add RTC power battery/The power indicator changes to blue |
Comparison of AXP2101(Core2 v1.1) and AXP192(Core2) parameters
FAQ
Q: If the memory card fails to read, you can add the following code in the initialization to increase the host memory card reading ability.
A:
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);
}
Version Comparison
1. The power management solution has been updated from Core2 (AXP192) to Core2 v1.1 (AXP2101+INA3221). The IDs of AXP192 and AXP2101 are different, and the program uses this as a marker to distinguish between versions.
2. The power indicator light has been changed from green to blue.
3. Added a backup battery for the RTC chip to ensure accurate timing even when the device is powered off.