WeAct Studio 4.2" E-Paper Display Module (BW/BWR) 400×300 SPI E-Ink

The WeAct Studio 4.2" E-Paper Display Module is a high-performance E-Ink display designed for low-power embedded applications. Unlike traditional LCD and TFT displays, E-Paper technology consumes power only during screen updates while retaining the displayed image even when power is removed.

With a resolution of 400×300 pixels, this display delivers sharp text and graphics, making it suitable for dashboards, smart home displays, weather stations, calendars, electronic shelf labels, and various IoT projects. The display communicates via the SPI interface and is compatible with popular development platforms including ESP32, ESP8266, STM32, RP2040, Arduino, and Raspberry Pi.

The module is available in both Black & White (BW) and Black, White & Red (BWR) variants, allowing developers to choose the best option for their application requirements.

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Features

✔ 4.2-inch E-Paper (E-Ink) display

✔ 400 × 300 pixel resolution

✔ Available in BW and BWR versions

✔ Ultra-low power consumption

✔ Image retention without power

✔ High contrast and paper-like appearance

✔ Excellent readability under direct sunlight

✔ Wide viewing angle

✔ SPI communication interface

✔ Compatible with 3.3V microcontrollers

✔ Suitable for battery-powered devices

✔ Partial refresh support (BW version)

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Technical Specifications
Parameter    Specification
Display Size    4.2 Inch
Resolution    400 × 300 Pixels
Interface    SPI
Operating Voltage    3.3V
Display Colors (BW)    Black, White
Display Colors (BWR)    Black, White, Red
Viewing Angle    >170°
Refresh Method    Full Refresh / Partial Refresh*
Technology    E-Ink / E-Paper
Compatibility    ESP32, ESP8266, STM32, RP2040, Arduino, Raspberry Pi

*Partial refresh support depends on display version and driver.

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Applications
Weather Station Display
Smart Home Dashboard
Home Assistant Status Display
Electronic Shelf Label (ESL)
Calendar Display
Day Counter Project
Baby Growth Tracker
Smart Clock
Meeting Room Signage
Battery-Powered Information Board
Sensor Data Display
Industrial Monitoring Systems
IoT Status Panel

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Package Includes
1 × WeAct Studio 4.2" E-Paper Display Module