Ⅰ Product Introduction

This product is a 2.9-inch 4-color ink screen, supporting black, white, yellow and red 4 color display.Its resolution is 296x128, using SPI communication mode, and supporting full refresh mode.We provide example programs in C and Python for Raspberry Pi. A reserved SPI control interface allows easy integration with main control boards such as Arduino, STM32, and ESP32. We also offer example code for Arduino, STM32, and ESP32, which supports displaying images, English and numerical characters, and drawing points, lines, rectangles, and circles.

1.1 Product Features

• Resolution：296x128
• SPI interface, requiring fewer pins
• Onboard level-shifting chip, compatible with 3.3V and 5V microcontroller interfaces
• Reserved SPI communication interface for easy integration with main control boards such as Arduino, STM32, and ESP32
• Provides open-source example programs for Raspberry Pi, Arduino, STM32, and ESP32 development boards

1.2 Product Specifications

Explanation of the refresh process (refresh time: the entire process from the beginning of the screen action to the stabilization of the screen):

Full Refresh: During the refresh process, the screen will flash many times.

1.3 Interface Definition

1.4 Product Dimensions

Product Advantages

E-paper uses "microcapsule electrophoretic display" technology for image display. Its working principle involves charged nanoparticles suspended in a liquid that migrate under the influence of an electric field, creating a display effect close to traditional printed paper through reflection under ambient light. Once refreshed, it requires no power and can maintain the displayed image for a long time. E-paper can clearly display images under various lighting conditions, including ambient and natural light, without the need for backlighting, and offers an almost 180° viewing angle. Due to its paper-like display quality, it is commonly used in e-readers, labels, and similar applications.

Application

Suitable for e-book readers, electronic price tags, industrial and logistics labels, digital signage, billboards, conference nameplates, electronic memos, etc.