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CONTENTS

CoreS3

SKU:K128

Description

CoreS3 is the third generation of the M5Stack Core series. Powered by the ESP32-S3 solution, this kit features a dual-core Xtensa LX7 processor running at 240MHz. CoreS3 comes equipped with built-in Wi-Fi functionality, enabling seamless connectivity. It boasts 16MB of onboard flash memory and 8MB of PSRAM, providing ample space for program storage.

CoreS3 offers convenient programming options through its TYPE-C interface, supporting OTG and CDC functions. This allows for easy connection with external USB devices and hassle-free firmware flashing. CoreS3 features a 2.0-inch capacitive touch IPS screen, protected by high-strength glass material. Additionally, a 30W pixel camera GC0308 is integrated at the bottom of the screen, accompanied by a proximity sensor LTR-553ALS-WA for enhanced functionality. Power management is handled by the AXP2101 power management core chip, employing a 4-way power flow control loop for efficient power distribution. The overall design emphasizes low power consumption. CoreS3 also features a 6-axis attitude sensor BMI270 and a magnetometer BMM150 for precise motion detection. With the onboard TF-card (microSD) card slot and BM8563 RTC chip, accurate timing and sleep-timer wake-up functions are readily available.

Sound output on CoreS3 is optimized with the high-fidelity 16-bit I2S power amplifier chip AW88298, accompanied by a built-in 1W speaker for clear audio playback. For sound input, the kit incorporates the ES7210 audio decoding chip and dual-microphone input. The side of the device includes an independent power button and restart (RST) button, complemented by a self-built delay circuit. By long-pressing the reset button, users can easily enter the program download mode. The CoreS3 kit comes with the DinBase Base, providing convenient options for Din rail, wall, and screw fixing. It can be powered by an external DC 12V (supports 9~24V) or an internal 500mAh lithium battery. The DinBase also offers multiple proto locations for users to customize and expand their projects. CoreS3 is an ideal choice for IoT development, various DIY project development, smart home control systems, and industrial automation control systems.

Graphical Programming
CoreS3 User Guide
Download Mode
Before downloading the program, please be sure to press and hold the reset button 3S (green light) to enter the download mode, otherwise the download will fail!
UIFlow programming notes
when burning firmware by Burner, you need to enter the Download mode before you can burn it. When using UIFlow, you do not need to enter the download mode, directly point 'Run' or 'download'.
On-off Operation
Power on and off operation:
Power on: Click the left power button
shut down: Long press the left power button for 6 seconds
reset: Click the bottom RST button
Download mode: Long press reset button 3S (green light)

Tutorial

Arduino IDE Arduino IDE
Arduino IDE
This tutorial will show you how to program and control CoreS3 devices through Arduino IDE
UIFlow2.0 UIFlow2.0
UIFlow2.0
This tutorial will show you how to control the CoreS3 device through the UIFlow2.0 graphical programming platform
Home Assistant Home Assistant
Home Assistant
This tutorial will show you how to connect Home Assistant through CoreS3

Features

  • Developed based on ESP32, support WiFi @16M Flash, 8M PSRAM
  • Built-in camera, proximity sensor, speaker, power indicator, RTC, I2S amplifier, dual microphone, condenser touch screen, power button, reset button, gyroscope
  • TF card slot
  • High-strength glass
  • Support OTG and CDC functions
  • AXP2101 power management, low power design
  • Supported programming platforms: Arduino, UIFlow

Includes

  • 1 × CoreS3
  • 1 × DinBase
  • 1 × M3 Hex Wrench
  • 1 × Hanger(large)
  • 4 × Hanger(small)

Applications

  • IoT development
  • Various DIY project development
  • Smart home control system
  • Industrial automation control system

Specification

Resources Parameters
SoC ESP32-S3@Xtensa LX7, 16MFLASH AND 8M-PSRAM, WIFI, OTG\CDC functions
Touch the IPS LCD screen 2.0"@320*240 ILI9342C
Camera GC0308@300000 pixels
Proximity sensors LTR-553ALS-WA
Power management chip AXP2101
Six-axis attitude sensor BMI270
Three-axismagnetometer BMM150
RTC BM8563
Speaker 16bits-I2S power amplifier chip AW88298@1W
Audio decoding chip ES7210, dual microphone inputs
Product Size 54 x 54 x 16mm
Product Size Full Assembly Kit(CoreS3+DinBase):54 * 54 * 31.5mm
CoreS3:54 * 54 * 15.5mm
Package Size 101*64*34mm
Product Weight 73.3g
Package Weight 97.8g

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.

CoreS3 TouchPanel Hot Fix Firmware

  • First flash this upgrade firmware to fix the touch offset issue , and then download the following factory firmware after installation, only for cores3 upgrade

Download CoreS3 TouchPanel Hot Fix Firmware Easyloader

Factory Firmware

Download CoreS3 Factory Firmware Easyloader

I2C Address

Chip ADDRESS
GC0308 ADDR 0X21
LTR553 ADDR 0x23
AXP2101 ADDR 0x34
AW88298 ADDR 0x36
FT6336 ADDR 0x38
ES7210 ADDR 0x40
BM8563 ADDR 0x51
AW9523 ADDR 0x58
BMI270 ADDR 0x69
BMM150 ADDR 0x10

Pin Map

LCD Screen & TF Card

LCD Pixel:320x240 TF cards support up to 16GB

ESP32S3 Chip GPIO37 GPIO36 GPIO3 GPIO35 GPIO4
AW9523B AW9523B_P1_1
AXP2101 AXP2101_DLDO1 AXP2101_LX1
ILI9342C MOSI SCK CS DC RST BL PWR
TF Card SPI_MOSI SPI_SCK SPI_MISO TF_CS

Camera & Proximity sensors LTR-553ALS-WA

ESP32S3 Chip GPIO12 GPIO11 AW9523B_P1_0 GPIO45 GPIO46 GPIO38
GC0308 I2C_SYS_SDA I2C_SYS_SCL CAM_RST CAM_PCLK CAM_VSYNC CAM_HREF
LTR-553ALS-WA I2C_SYS_SDA I2C_SYS_SCL

The LTR-553ALS-WA proximity sensor and camera are integrated in a single line, using I2C for communication, and the detailed communication address is shown in the table above.

CAP.TOUCH (I2C Addr: 0x38)

ESP32S3 chip GPIO12 GPIO11 AW9523B_P1_2 AW9523B_P0_0
FT6336U I2C_SYS_SDA I2C_SYS_SCL TOUCH_INT TOUCH_RST

Microphone & amplifier

ESP32S3 Chip GPIO12 GPIO11 AW9523B_P1_3 AW9523B_P0_2 GPIO34 GPIO33 GPIO13 GPIO0
ES7210(0x40) I2C_SYS_SDA I2C_SYS_SCL AW_INT AW_RST I2S_BCK I2S_WCK I2S_DATO MCLK
AW88298(0x36) I2C_SYS_SDA I2C_SYS_SCL

AXP Power Led

AXP2101 AXP_CHG_LED
Red LED RTC_VDD

RTC

ESP32S3 Chip GPIO12 GPIO11 AXP2101_IRQ
BM8563 I2C_SYS_SDA I2C_SYS_SCL AXP_WAKEUP

IMU (6-axis gyroscope + 3-axis accelerometer)

ESP32S3 Chip GPIO12 GPIO11
BMI270&BMM150 I2C_SYS_SDA I2C_SYS_SCL

Internal I2C connection

ESP32S3 Chip GPIO12 GPIO11
BMI270&BMM150 I2C_SYS_SDA I2C_SYS_SCL
AXP2101 I2C_SYS_SDA I2C_SYS_SCL
BM8563 I2C_SYS_SDA I2C_SYS_SCL
ES7210 I2C_SYS_SDA I2C_SYS_SCL
AW88298 I2C_SYS_SDA I2C_SYS_SCL

PORT

Port Pin NOTE
PORT-A(RED) G2/G1 I2C
PORT-B(BLACK) G9/G8 GPIO
PORT-C(BLUE) G18/G17 UART(RX/TX)

M5CoreS3 M-BUS Schematic diagram

Power Management

module size

Schematic

schematics

Module Size

module size

2D size source file

Examples

Arduino

ESP-BSP

Video

  • How to use USB port execute code on UIFlow 2.0

  • Burning UIFLow2x to CoreS3

FAQ

  • Q: After the sensor is connected, what is the case that the sensor does not work or does not exist?
  • A: The CoreS3 uses the AXP2101 power management chip, and the Port port and the M5-Bus power supply need to be configured for normal output voltage. Add M5.config() to the setup function; Will automatically configure the Unit and M5BUS output to 5V(excluding USB 5V), the sensor and base will work properly;
    If you need 9-24V of the base as a power input, you need to configure cfg.output_power = false; This means that the MBUS can work properly only if it is set to the input state.
module size