Quad-Color 4.2 inch e-Ink Display Module 400x300 for Arduino,Raspberry Pi

Description

All-in-One Plug-and-Play Display Module
The ER-EPD042-2RY-5074 is a fully integrated 4.2-inch E-Paper (E-Ink) display module engineered for rapid prototyping and seamless deployment. It pairs a high-resolution 400×300 pixels panel with an onboard breakout board powered by the JD79668 COG controller, completely eliminating the need for complex, custom driver circuitry. Supporting vibrant Red, Yellow, White, and Black four-color rendering, this all-in-one module delivers striking multi-color visuals in a compact footprint. It is the ultimate choice for embedded projects that demand a true plug-and-play display solution without the engineering overhead of designing
custom PCBs from scratch.
Glare-Free Sunlight Readability with Zero-Power Retention
Built for demanding real-world environments, the display offers an ultra-wide 170° viewing angle (85° in all directions) and is fully sunlight readable, making it the perfect visual interface for outdoor applications and bright indoor spaces. Just like a Kindle e-reader, it utilizes bistable display technology that requires zero power to hold a static image—the screen consumes energy only during the brief refresh cycles. With an active display area of 84.80×63.60 mm, it produces crisp, paper-like text and graphics with absolutely no backlight glare, ensuring optimal legibility under direct sunlight.

Dual-Voltage Support with Flexible Connection Options
The module is designed with maximum integration flexibility in mind. It natively supports both 3.3V and 5V power supplies and features both 3-wire and 4-wire SPI interfaces. You can choose between a compact FFC ZIF connector or a traditional Pin Header for the physical connection, giving developers the freedom to select the wiring method that best suits their enclosure constraints. This dual-voltage design allows it to interface effortlessly with virtually any microcontroller platform—including PIC, AVR, Arduino, and ARM Cortex—without the need for external, space-consuming level shifters.

Rapid Prototyping Ecosystem with Raspberry Pi Integration
To accelerate your development cycle, we provide fully tested libraries and ready-to-run example code for Arduino series and Raspberry Pi (including Pi Zero). With optional female header connectors and Dupont wires, you can instantly plug this module directly into a Raspberry Pi. This makes it incredibly easy to build advanced Raspberry Pi-powered applications, such as smart home control dashboards, electronic shelf labels (ESLs) for retail stores, portable IoT weather stations, and dynamic office desk nameplates or meeting room schedulers. This module cuts development time from weeks to minutes, empowering makers and engineers to launch innovative IoT products faster than ever.

Package Content

◇ e-Paper Display Module x 1

* Please select if you wish to have optional accessories.

Application

◇ Logistics

◇ Reusable Transit Item

◇ Station Terminal

◇ Smart Card

◇ Smart Identity Tag

◇ Seat Number Tab

◇ Smart Luggage Tag

◇ Smart Coffee Cup

◇ Smart Home Application

◇ Identification & Access

◇ Display the Latest Weather Forecast

◇ Display Your Own Twitter Feed

◇ E-paper room booking system

◇ Other IoT (Internet of Things) Devices

◇ 1D/2D Barcode Electronic Shelf Label

Datasheet

Format	Documents Name	Language	Update Date	Size
	ER-EPD042-2-5074_Datasheet	English	Sep-18-2026	1.1M
	Controller JD79668_Datasheet	English	Jun-20-2026	2.4M

 

Tutorial-Arduino

Format	Documents Name	Language	Update Date	Size
	Arduino Library and Example for 4-wire SPI	English	Sep-18-2026	10K
	Arduino Interfacing Document	English	Sep-05-2019	161K

Tutorial-Raspberry Pi

Format	Documents Name	Language	Update Date	Size
	Raspberry Pi Library and Example for 4-wire SPI	English	Sep-18-2026	233K
	Raspberry Pi Interfacing Document	English	Sep-05-2019	77K

 

Tutorial-ESP32

Format	Documents Name	Language	Update Date	Size
	ESP32_Example	English	Sep-18-2026	40K

Tutorial-8051 Microcontroller

Format	Documents Name	Language	Update Date	Size
	8051 Interfacing and Demo Code	English	Sep-18-2026	16K