M5Stack ESP32 Core Ink Development Kit(1.54'' elnk display)


Regular price $29.90

10+ In Stock

Shipping calculated at checkout.


CoreInk is an exciting addition to the M5Stack cores lineup, offering a brand new E-ink display experience. Powered by the ESP32-PICO-D4, this innovative device boasts a 1.54" Black and White E-ink Display with a resolution of 200x200. Unlike traditional LCD screens, E-ink displays are known for being gentle on the eyes, making them a perfect choice for extended reading or viewing sessions. Additionally, they consume minimal power and can retain the displayed image even when power is disconnected.

Controlling the CoreInk is a breeze with its integrated multi-function button, physical button, status LED, and buzzer. These features provide intuitive control and feedback for a seamless user experience. The device is equipped with a 390mAh lithium polymer battery, ensuring sufficient power for extended usage. It also incorporates an RTC (BM8563) for precise timing control and supports deep sleep functionality to conserve energy.

The CoreInk sets itself apart with its independent reset and power buttons, allowing for convenient operation. Moreover, it offers expansion ports (HY2.0-4P, M-BUS, HAT expansion) that enable the attachment of external sensors, opening up a world of possibilities for expanding its functionality. With the CoreInk, users can unleash their creativity and explore unlimited potential

Precautions: Please avoid long-time high-frequency refresh when using it. The recommended refresh interval is (15s/time). Do not expose to ultraviolet rays for a long time, otherwise it may cause irreversible damage to the ink screen. The low-power power management solution adopted by CoreInk is different from that of CORE and StickC devices. When in use, the PWR button is used as a power-on button(long press 2s). If you need to shut down the device, you need to use the software API or press the reset button on the back.

Product Features

  • ESP32 Standard wireless functions Wi-Fi
  • Internal 4M Flash
  • Low Power Display
  • 180 degree viewing angle
  • Expansion ports
  • Built-in Magnet
  • Internal Battery
  • Expandable


  • 1x CoreInk
  • 1x Type-C USB(20cm)


  • IoT Terminal
  • E-Book
  • Industrial Control Panel
  • Electronic Tag


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 )


  • This tutorial will show you how to control CoreInk devices through the UIFlow graphical programming platform
    This tutorial will show you how to program and control CoreInk devices through Arduino IDE

    Customer Reviews

    Based on 11 reviews
    Andre Courchesne
    Amazing and flexible device

    100% Arduino compatible, great feature set

    Alan Stanly
    awesome unit

    i got these for temperature monitoring because the m5stick gets too hot, these units are a perfect and do not elevate the ambient temperature, resulting in an accurate reading. I can't wait until M5 comes out with a color version of e-ink for these!

    Moises Fernandez Arias

    M5Stack ESP32 Core Ink Development Kit(1.54'' elnk display)

    David Burrueco Solé

    M5Stack ESP32 Core Ink Development Kit(1.54'' elnk display)

    Jitse Schaafsma
    A neat remote controller for your M5Stack based home control environment

    A really nice and easy programmable device. Leave it on your table and it will be powered nearly forever. My only suggestion is to optimise the casing and turnwheel for more handheld satisfaction. It feels a bit uncomfortable. But hey, it is great.

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