We've got 1,000 discounts for you to enjoy in our special offers collection - grab yourself a dodeca–deal while they're still in stock ❤️!

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

by M5Stack

A compact ESP32-based dev kit with a built in E-ink/ePaper display (as well as Wi-Fi, Bluetooth and an onboard lipo battery).

Controlled by the ESP32-PICO-D4 this new device includes a 200x200 1.54" Black and White E-Ink Display. Compared to a regular LCD E-ink displays are easier on the eyes, which makes them a great choice for reading or viewing for longer periods. Other benefits are low power consumption and the ability to retain the image even if power to the display is lost.

For control the CoreInk integrates an multi-function button, a physical button, integrated status LED and buzzer. The device also includes a 390mAh Lipo RTC (BM8563) for controlling accurate timing and deep sleep functionality. CoreInk features independent reset and power buttons, expansion ports (HY2.0-4P, M-BUS, HAT expansion) for attaching external sensors to expand functionality for unlimited possibilities。

Warning: Please avoid using high refresh rates, recommended refresh rate is 15s/per refresh. Do not expose to ultraviolet rays for a long time, otherwise it may cause irreversible damage to the ink screen.


  • ESP32 Standard wireless functions WiFi, Bluetooth
  • 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


Resource Parameter
ESP32-PICO-D4 240MHz dual core
dual mode Bluetooth
Flash 4MB Flash
Input Voltage 5V @ 500mA
Ports 1xTypeC
M-BUS Female Connector
Pin Array/ Hat Expansion
Screen GDEW0154M09
SPI Port
200x200 @ 1.54"
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 1xProgrammable, 1xReset, 1xPower
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 32°F to 104°F ( 0°C to 40°C )
Net Weight 32g
Gross Weight 55g
Dimensions 56*40*16mm
Package Size 82 x 46 x 20mm
Case Material Plastic ( PC )