{"product_id":"m5stack-coreink-esp32-e-ink-display-development-board","title":"M5Stack CoreInk - ESP32 E-Ink Display Development Board","description":"\u0026lt;p\u0026gt;M5Stack CoreInk - ESP32 E-Ink Display Development Board\u0026lt;\/p\u0026gt;\u0026lt;p\u0026gt;The M5Stack CoreInk is a compact, ultra-low-power development board built around the ESP32-PICO-D4 (dual-core, Wi-Fi + Bluetooth) with a 1.54inch black\/white E-Ink (E-Paper, GDEW0154M09 panel) display at 200x200 resolution. A built-in BM8563 real-time clock lets the board wake from deep sleep on a schedule without keeping the main chip powered, and the onboard 390mAh Li-Po battery (rechargeable over USB-C) makes it suited to always-on, battery-run displays such as badges, price\/shelf labels, and low-refresh dashboards.\u0026lt;\/p\u0026gt;\u0026lt;p\u0026gt;Input is a single side button plus a 3-position dial switch (up\/press\/down) for menu navigation, and a HY2.0-4P Grove-style port breaks out a second, external I2C bus for sensors. Programmable via the Arduino IDE (M5Stack board package) or UIFlow. Correction (18 Aug 2026): this listing originally stated a microSD slot and a 203mAh battery - CoreInk has no SD slot, and the verified official battery figure is 390mAh; both are fixed below.\u0026lt;\/p\u0026gt;\u0026lt;ul\u0026gt;\u0026lt;li\u0026gt;MCU: ESP32-PICO-D4, dual-core Xtensa LX6 @ 240MHz, Wi-Fi + Bluetooth\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;Display: 1.54in E-Ink, 200x200, black\/white, GDEW0154M09 panel\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;RTC: BM8563 (PCF8563-compatible) for scheduled deep-sleep wake\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;Battery: built-in 390mAh Li-Po, USB-C charging\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;Input: 1 side button + 3-position dial switch (up\/press\/down)\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;Expansion: HY2.0-4P port (external I2C, SDA\/SCL)\u0026lt;\/li\u0026gt;\u0026lt;li\u0026gt;Connector: USB-C\u0026lt;\/li\u0026gt;\u0026lt;\/ul\u0026gt;","brand":"M5Stack","offers":[{"title":"Default Title","offer_id":53747277660525,"sku":"CDN-2356","price":2800.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/1_1200x1200_5a0d1bca-dfe2-435c-ba40-0e95f78f21e0.jpg?v=1786986866","url":"https:\/\/compoden.com\/products\/m5stack-coreink-esp32-e-ink-display-development-board","provider":"Compoden","version":"1.0","type":"link"}