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2.9 inch e-paper module 296 by 128 pixels black white matte finish

WaveShare

WaveShare 2.9inch E-Paper Display Module 296×128 Black White

SKU CH-CPPC-8XK4B

A 2.9 inch e-paper display with 296×128 resolution, SPI interface and ultra-low power consumption for shelf labels or name tags

  • CPU TypeOther
  • Ultra-low power draw — only refreshes consume energy
  • No backlight needed — retains image after power is removed
  • 9 inch 296×128 black-white e-paper resolution
  • Near 180° viewing angle for clear readability
  • SPI interface keeps pin count minimal

2.9-inch E-Paper Display Module

The WaveShare 2.9-inch E-Paper Display Module is a 296×128 pixel black and white screen designed for microcontroller projects. It uses microcapsule electrophoretic technology to reflect ambient light, creating a paper-like effect without a backlight. The display retains the last shown content indefinitely after power is removed. It suits developers building low-power signage, price tags, or data loggers.

SPI Interface for Embedded Systems

The module communicates via an SPI interface, requiring minimal GPIO pins from the host controller such as a Raspberry Pi Pico. This leaves additional I/O free for sensors, buttons, or wireless modules in a compact build. Ultra-low power consumption means the unit only draws current during screen refresh cycles. No backlight circuitry simplifies the power supply design.

Sustained Static Display Operation

Under continuous operation, the display excels at showing static information for extended periods without energy cost. Power is consumed only when the image changes, making it ideal for always-on readouts. The wide viewing angle of up to 180° ensures readability from various positions under lamplight or natural light. It is not suited for applications requiring video rates or frequent full-screen animation.

Highlights

  • Ultra-low power draw — only refreshes consume energy
  • No backlight needed — retains image after power is removed
  • 9 inch 296×128 black-white e-paper resolution
  • Near 180° viewing angle for clear readability
  • SPI interface keeps pin count minimal

Specifications

CPU TypeOther

Questions about this item

How long can the 296×128 pixel image stay visible without any power applied?

The display keeps the last content for a long time after power down because it uses microcapsule electrophoretic technology that reflects ambient light and needs no backlight.

What is the power draw and heat output when the screen refreshes continuously all day?

Ultra low power consumption means power is only required during refreshing, so heat and noise remain negligible even with repeated SPI-driven updates.

Which host board and wiring does the SPI interface on this 2.9 inch module expect?

The supplier title shows it is made for Raspberry Pi Pico, so the buyer must already have a Pico and connect the module through its SPI pins.

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