WSAL13379 – 4.2inch e-Paper Module (B)/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The 4.2-inch three-color E-Ink raw display (400×300 pixels) is driven over SPI from microcontrollers such as Raspberry Pi, Arduino, Jetson Nano, RDK X3, STM32 and ESP32/ESP8266. The source only lists available demo environments; specific instructions are absent.

Related products at JW Tech

• WSAL13379 – 400x300, 4.2inch E-Ink raw display, three-color
• WSAL13454 – 400x300, 4.2inch E-Ink display module, three-color

Technical overview

• Resolution: 400 × 300 pixels
• Three-color E-Ink display
• Connected via SPI bus
• Supported platforms: Raspberry Pi, Arduino UNO R3, Jetson Nano, RDK X3, STM32 (CubeMX), ESP32/ESP8266
• Available demos in C and Python depending on platform
• No specific commands or pin mappings provided in the source

Notes and version constraints

• The source provides no specific control commands, pin mappings, or circuit details.
• Version-sensitive steps and exact initialization sequences are not documented.
• Compatibility with specific firmware versions must be confirmed before deployment.

Source and revision record

• 4.2inch e-Paper Module (B) - Waveshare Wiki
• Source revision: 103829
• Captured: 2026-08-30T03:44:44+00:00
• SHA-256: 50ab39ee00eb5748982fdc74898c9f0e52ac39281c0bff44eb42da6f73997a7d