M5Stack CoreS3 SE IoT Controller w/o Battery Bottom
📦 Location of the warehouse: US
If an item is currently unavailable, you can place a pre-order. We will ship it as soon as our stock is replenished.
Need it faster? Contact us via email or through our Live Chat Support, and we will arrange an expedited delivery for you.
M5Stack CoreS3 SE IoT Controller w/o Battery Bottom
M5CoreS3 SE is a lightweight version of the third-generation CoreS3 main unit within the M5Stack development kit lineup. It operates on the ESP32-S3 solution and features a dual-core Xtensa LX7 processor, running at 240 MHz. With built-in (2.4G) WiFi, it includes 16MB FLASH and 8MB PSRAM for ample program storage. Downloads can be made via the Type-C interface, which supports OTG and CDC functions, allowing for easy USB device connectivity and firmware updates. The device features a durable 2.0-inch capacitive touch IPS screen protected by a high-strength glass panel.
Differences Between M5Stack CoreS3 and M5Stack CoreS3 SE
The M5CoreS3 SE utilizes the AXP2101 power management chip along with a 4-way power flow control circuit designed for efficient low power consumption. It also features an onboard MicroSD card slot and a BM8563 RTC chip, ensuring precise timing and sleep-timer functionalities. For audio output, it includes a high-fidelity 16-bit I2S amplifier chip AW88298 along with a built-in 1W speaker. For audio input, it has an ES7210 audio decoding chip with dual microphone inputs.
The device is equipped with an independent power button and a reset (RST) button, both featuring a built-in delay circuit. Long-pressing the reset button allows users to enter program download mode. This product is ideal for IoT development, various DIY projects, smart home control systems, and industrial automation control systems.
Version Comparison
| Hardware Peripheral | M5CoreS3 | M5CoreS3 SE |
|---|---|---|
| Camera (GC0308) | √ | × |
| Proximity Sensor (LTR-553ALS-WA) | √ | × |
| IMU (BMI270) | √ | × |
| Compass (BMM150) | √ | × |
| RTC | √ | √ |
| MIC | √ | √ |
| SPEAKER | √ | √ |
| PMIC (AXP2101) | √ | √ |
| 16MB FLASH and 8MB PSRAM | √ | √ |
| TOUCH | √ | √ |
Features
-
Developed using the ESP32-S3, offering WiFi support with 16MB Flash and 8MB PSRAM
-
Equipped with speakers and dual microphones
-
Capacitive touch screen for easy interaction
-
Includes a MicroSD card slot for expanded storage
-
Protected with high-strength glass
-
Supports OTG and CDC functions for versatile connections
-
Low-power design powered by AXP2101 management chip
-
Compatible with programming platforms like Arduino and UIFlow
Includes
- 1 × M5CoreS3 SE
Applications
-
IoT development projects
-
Various DIY project implementations
-
Smart home automation systems
-
Industrial control systems
Specifications
| Resources | Parameters |
|---|---|
| MCU | ESP32-S3 @ Xtensa LX7, 16MB FLASH and 8MB PSRAM, supports WiFi, OTG, and CDC functions |
| Touch IPS LCD Screen | 2.0" @ 320x240 ILI9342C |
| Power Management Chip | AXP2101 |
| RTC | BM8563 |
| Speaker | 16-bit I2S power amplifier chip AW88298 @ 1W |
| Audio Decoding Chip | ES7210 with dual microphone inputs |
| Grove Output Maximum Current (Lithium Battery Powered) | DC4.2V / 940mA |
| Grove Output Maximum Current (USB Powered) | DC5V / 680mA |
| Power Dissipation | Battery: Standby mode: DC4.2V / 104.64uA; Working mode: DC4.2V / 109.67mA USB power supply: Working mode: DC5V / 166.27mA |
| Product Size | 54 x 54 x 15.5 mm |
| Package Size | 133.4 x 95 x 21 mm |
| Product Weight | 38.4 g |
| Package Weight | 55.1 g |
I2C Address
| Chip | ADDRESS |
|---|---|
| AXP2101 ADDR | 0x34 |
| AW88298 ADDR | 0x36 |
| FT6336U ADDR | 0x38 |
| ES7210 ADDR | 0x40 |
| BM8563 ADDR | 0x51 |
| AW9523 ADDR | 0x58 |
Schematics







Pin Map
LCD Screen & MicroSD
LCD Resolution: 320x240
| ESP32S3 Chip | GPIO37 | GPIO36 | GPIO3 | GPIO35 | GPIO4 | |||
|---|---|---|---|---|---|---|---|---|
| AW9523B | AW9523B_P1_1 | |||||||
| AXP2101 | AXP2101_DCDO1 | AXP2101_LX1 | ||||||
| ILI9342C | MOSI | SCK | CS | DC | RST | BL | PWR | |
| TF Card | SPI_MOSI | SPI_SCK | SPI_MISO | TF_CS |
CAP.TOUCH
| 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 | I2C_SYS_SDA | I2C_SYS_SCL | AW_INT | AW_RST | I2S_BCK | I2S_WCK | I2S_DATO | MCLK |
| AW88298 | 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 |
Internal I2C Connection
| ESP32S3 Chip | GPIO12 | GPIO11 |
|---|---|---|
| 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) |
Softwares
Quick Start
Arduino
Platform.IO
Easyloader
| Easyloader | Download Link | Notes |
|---|---|---|
| CoreS3 SE Factory Firmware Easyloader | Download | / |
I2C Communication Addresses
| Chip | ADDRESS |
|---|---|
| AXP2101 ADDR | 0x34 |
| AW88298 ADDR | 0x36 |
| FT6336U ADDR | 0x38 |
| ES7210 ADDR | 0x40 |
| BM8563 ADDR | 0x51 |
| AW9523 ADDR | 0x58 |
1. General Shipping Information
- We provide premium shipping methods with a tracking number for each order.
-
Shipping address should be input in English without any special symbols to help the courier company recognize your address in the system. We will ship according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
-
Please contact our customer service staff immediately if you need to cancel or change an order. Once your order has reached "Shipped" status, it can no longer be canceled or changed in any way. To avoid complications, please recheck your shopping cart before checkout.
-
We can ship all in-stock orders within 1 business day as your order has been confirmed.
-
All items are inspected before dispatch and are carefully hand-packed.
-
With standard courier practice, you need to check the contents of the parcel before signing for your goods. Otherwise, we will not be held responsible for any damage that may have occurred in transit.
2. Shipping Options & Rates (United States)
(For Products in the US Warehouse & Global Warehouse)
2.1 Continental U.S. (50 States)
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| USPS Ground Advantage | $0.00 - $5.00 | $9.99 | 3-7 Business Days |
| USPS Ground Advantage | $5.00 - $50.00 | $5.99 | 3-7 Business Days |
| USPS Ground Advantage | Over $50.00 | Free | 3-7 Business Days |
|
USPS Priority Mail (Faster Option) |
$0.00 - $50.00 | $19.99 | 1-4 Business Days |
| USPS Priority Mail | Over $50.00 | $17.59 | 1-4 Business Days |
2.2 Non-Continental U.S.
(Includes Alaska, Hawaii, Puerto Rico, Guam, Virgin Islands, etc.)
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| USPS Ground Advantage | $0.00 - $5.00 | $9.99 | 5-9 Business Days |
| USPS Ground Advantage | $5.00 - $70.00 | $7.99 | 5-9 Business Days |
| USPS Ground Advantage | Over $70.00 | Free | 5-9 Business Days |
Important Notice:
- Before placing your order, please check the inventory location on the product page to confirm the delivery timeframes.
- For products stored in the Global Warehouse (Shenzhen), we will ship them directly from China.
- If you place an order for products from both the U.S. warehouse and the Global warehouse, we will ship your order separately: the products from the Global warehouse will be sent from China, and the products from the U.S. warehouse will be sent from the U.S. warehouse.
3. Warehouse Locations
Our products are stored in both our U.S. and Global warehouses to provide more flexible logistics solutions. On each product's description page, we indicate the specific warehouse location.
3.1 U.S. Warehouse
For products stored here, we use USPS for shipping. Logistics within U.S. are very efficient, with an estimated delivery time of 3-7 business days.
3.2 Global Warehouse (China)
Located in Shenzhen, Guangdong.
For orders shipping from our Global Warehouse, we typically use YunExpress. Given the complexities of international shipping, the estimated delivery time is around 10 business days, though this may vary due to customs processes.
4. Customs and Taxes
Effective Date: December 10, 2025
At OpenELAB, we are committed to providing accurate product descriptions and high-quality electronics. The following policy outlines your rights and obligations, designed to be fair to both our customers and our business operations globally.
1. Warranty Policy
A. Standard Limited Warranty (Global & US)
For customers in the United States, Asia, and other non-EU regions:
-
Warranty Period: OpenELAB provides a 12-month warranty from the date of delivery.
-
Coverage: This warranty covers defects in material and workmanship under normal use.
-
Resolution: We will repair or replace defective units at no charge.
B. Statutory Rights for EU/UK Customers (EU Compliance)
If you are a consumer residing in the European Union or the UK purchasing from our global site:
-
Statutory Guarantee: You are entitled to a 24-month statutory guarantee for conformity defects present at the time of delivery, in accordance with EU consumer protection laws.
-
Relation: The Standard Limited Warranty (Section 1.A) applies in addition to, and does not replace, your statutory rights.
C. Warranty Exclusions (Applies to ALL Regions)
Warranty coverage is VOID if the damage is caused by:
-
Misuse: Incorrect installation, reverse polarity, or exceeding voltage limits.
-
Unauthorized Modification: This explicitly includes soldering, cutting pins, modifying the PCB, or flashing unauthorized/beta firmware that "bricks" the device.
-
Physical Damage: Drops, moisture/water damage, or electrical surges (lightning).
-
Normal Wear & Tear: Consumable parts (e.g., batteries), unless defective upon arrival.
Note: For non-warranty repairs (e.g., customer-induced damage), we may offer repair services for a fee. Shipping and diagnostic costs will be borne by the customer.
2. Return & Refund Policy
A. Return Window
-
Standard: You may request a return within 31 days of receiving your order.
-
EU Customers: You have the statutory right to withdraw from the contract within 14 days of receipt without giving a reason.
B. Refund Conditions & Restocking Fees
To protect against policy abuse, the refund amount is strictly determined by the condition of the returned item.
1. Full Refund (100%)
-
The item is Brand New, Unopened, and Unused.
-
The original packaging is intact and sealed.
-
All accessories are present.
2. Partial Refund (Restocking Fee / Value Depreciation)
If the item is returned in a condition that prevents it from being sold as new, OpenELAB reserves the right to deduct a Restocking Fee (or "Compensation for Loss of Value" for EU customers) from the refund.
Deductions apply if:
-
Signs of Use: Visible scratches, mounting marks on screw holes, or fingerprints.
-
Damaged Packaging: Original box is torn, written on, or missing.
-
Technical Modification: The device has been powered on, programmed/flashed, or soldered.
-
Broken Seals: Anti-static bags or security seals have been opened.
Depending on the severity of the usage/damage, the deduction may range from 15% to 50% of the product price. Items damaged beyond repair due to misuse will not be refunded.
C. Shipping Costs
-
Defective / Wrong Item: OpenELAB covers the return shipping cost.
-
Customer Remorse (Changed Mind / Ordered Wrong Item): The customer is responsible for all return shipping costs to our designated return center (located in the US, Germany, or China, depending on your region). Original shipping fees are non-refundable unless required by local law.
3. Return Process (RMA)
To ensure a smooth return process, please follow these steps:
-
Authorization: Contact us at info@openelab.io before returning any item. Returns without prior authorization will not be accepted.
-
RMA Number: We will provide you with a Return Merchandise Authorization (RMA) number and the correct return address.
-
Packing: Ship the item back in its original packaging with the RMA number clearly marked on the shipping label (not on the product box).
-
Tracking: We strongly recommend using a trackable shipping method. OpenELAB is not responsible for returns lost in transit.









