M5Stack ESP32 Core Ink Development Kit
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M5Stack ESP32 Core Ink Development Kit
CoreInk represents a significant advancement within the M5Stack cores portfolio, providing an innovative E-ink display experience. Driven by the ESP32-PICO-D4 chip, this remarkable device features a 1.54-inch black and white E-ink display with a resolution of 200x200 pixels. In contrast to traditional liquid crystal displays (LCDs), E-ink displays are recognized for their eye-friendly characteristics, making them particularly suitable for prolonged reading or viewing activities. Furthermore, these displays exhibit minimal power consumption and possess the ability to retain the displayed image even in the absence of power.
Controlling the CoreInk device is straightforward, facilitated by its integrated multi-function button, physical button, status LED, and buzzer. These features deliver intuitive control and feedback, enhancing the overall user experience. The device is equipped with a 390mAh lithium polymer battery, providing adequate power for extended use. Additionally, it incorporates a Real-Time Clock (RTC) for precise timing control and supports deep sleep functionality to optimize energy conservation.
The CoreInk distinguishes itself with independent reset and power buttons, facilitating convenient operation. Additionally, it is equipped with expansion ports (HY2.0-4P, M-BUS, HAT expansion) that enable the connection of external sensors, thus expanding its functionality significantly. With CoreInk, users have the opportunity to unleash their creativity and explore a multitude of possibilities.
Caution:
Do not expose the device to ultraviolet rays for a long time, or it may damage the screen.
Precautions: It is advised to refrain from prolonged high-frequency refresh cycles during use. The recommended refresh interval is every 15 seconds. Additionally, exposure to ultraviolet rays should be minimized; sustained exposure may result in irreversible damage to the ink screen. The low-power management solution implemented by CoreInk differs from that employed by CORE and StickC devices. To activate the device, the PWR button should be pressed for a duration of two seconds. If it is necessary to power down the device, please utilize the software API or the reset button located on the back of the device.
Product Features
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ESP32 Standard wireless functions Wi-Fi
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Internal 4M Flash
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Low Power Display
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180-degree viewing angle
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Expansion ports
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Built-in Magnet
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Internal Battery
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Expandable
Includes
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1x CoreInk
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1x Type-C USB(20cm)
Application
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IoT Terminal
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E-Book
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Industrial Control Panel
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Electronic Tag
Specification
| Resources | Parameter |
|---|---|
| ESP32-PICO-D4 | 240MHz dual core, 600 DMIPS, 520KB SRAM, Wi-Fi |
| Flash | 4MB Flash |
| Input Voltage | 5V @ 500mA |
| Ports | TypeC*1, HY2.0-4P*1, M-BUS Female Connector, Pin Array/ Hat Expansion |
| Screen | GDEW0154M09 | SPI Port | 200*200@1.54" | Dpi:184 | 1-bit Black & White(Grayscale:2) \ Viewing Area(mm):27.6x27.6 | Dot pitch(mm) 0.138x0.138 | Refresh Time（s） 0.82 /Partial refresh（s） 0.24 |
| Physical Buttons | Programmable *1 , Reset *1, Power *1 |
| LED | Green LED x 1 |
| RTC | BM8563 |
| Buzzer | Passive Buzzer*1 |
| Wifi | 2.4G 3D Antenna |
| PINS | G25, G26, G36, G23, G34, G18, G21, G22, G14, G13 |
| Battery | 390mAh@3.7V |
| Working Temp | 0°C to 60°C |
| Net Weight | 32g |
| Gross Weight | 55g |
| Dimensions | 56*40*16mm |
| Package Size | 82*46*20mm |
| Case Material | Plastic ( PC ) |
Featured Articles
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
