M5Stack ESP32 Core Ink Development Kit 1.54inch E-Ink Display

The CoreInk from M5Stack is a development kit with the ESP32-PICO-D4 and a 1.54 inch E-Ink display with 200 × 200 pixels. Thanks to its high contrast the display is easy to read, uses little power and keeps the image even without supply. Built in are a 390 mAh battery, the BM8563 real-time clock for deep sleep and timed wake-up, a dial switch, an LED and a buzzer.

Important: Do not refresh the display continuously at short intervals, 15 s between two refreshes is recommended. Do not expose the device to UV light for long periods, both can permanently damage the E-Ink display. It is switched on with the PWR button on the side (press and hold) and switched off by software or with the reset button on the back.

Recommended Accessories:

• CoreInk Proto Base
• 20cm M5Stack Grove Cable 5 Pieces

Features:

• 1.54 inch E-Ink display, 200 × 200 pixels, black and white, 180° viewing angle
• Image is kept without supply
• WiFi and Bluetooth (ESP32)
• 390 mAh battery and BM8563 real-time clock for deep sleep and timed wake-up
• Dial switch (up, middle, down), PWR button, reset button, green LED, passive buzzer
• Expansion via Grove HY2.0-4P, M5-Bus socket at the bottom and HAT connector at the top
• Built-in magnet, mounting holes for snap pins
• Programmable with UIFlow, MicroPython and Arduino

Application Examples:

• Display for weather and sensor data with low power consumption
• Clock, calendar or door sign
• Status display in the smart home

Documentation:

• CoreInk: description, pinout and examples (M5Stack)
• Getting started with Arduino (M5Stack)
• Library and examples (M5Stack, GitHub)

Technical Data:

• Manufacturer: M5Stack
• Manufacturer SKU: K048
• Microcontroller: ESP32-PICO-D4, dual core 240 MHz, 520 KB SRAM, WiFi, Bluetooth
• Flash: 4 MB
• Display: 1.54 inch E-Ink, 200 × 200 pixels, black and white
• Display driver: GDEW0154M09, according to M5Stack GDEY0154D67 since October 2024
• Refresh: partial 0.24 s, full 0.82 s (GDEW0154M09); partial 0.26 s, full 2 s (GDEY0154D67)
• Real-time clock: BM8563
• Battery: 390 mAh, 3.7 V
• Input: 5 V via USB-C
• Grove HY2.0-4P: black GND, red 5V, yellow G32, white G33
• Further pins: G25, G26, G36, G23, G34, G18, G21, G22, G14, G13
• Operating temperature: 0 °C to 60 °C
• Dimensions: 56 × 40 × 16 mm
• Weight: 31.5 g

Scope of Delivery:

• 1× M5Stack CoreInk

Safety and disposal instructions

Charge only with a suitable charger. Do not short-circuit, open, damage or heat the battery above 60 °C. Keep out of reach of children. Do not use if damaged or deformed.

Disposal: Batteries and accumulators do not belong in household waste. Free return to us or any sales point – see Return & Disposal.