Adafruit
Adafruit 2.9 Red/Black/White eInk Display Breakout - THINK INK
Add a large, vibrant tri-colour eInk display to your microcontroller project with this 2.9" breakout board. The panel displays red, black, and white pixels a...
Add a large, vibrant tri-colour eInk display to your microcontroller project with this 2.9" breakout board. The panel displays red, black, and white pixels at 296×128 resolution that remain visible even with power completely disconnected — just like printed paper, but with the added impact of colour.
An onboard SRAM chip handles frame buffering so even memory-constrained microcontrollers can drive the display without sacrificing precious RAM (~9.5 KB needed). A MicroSD socket provides storage for images and text files, and the board works with both 3.3V and 5V logic for broad compatibility.
Key Features
- 2.9" Tri-Colour eInk Display – 296×128 pixel resolution with red, black, and white ink
- Onboard SRAM – Offloads frame buffering from the microcontroller
- MicroSD Socket – Store images, text files, and display assets
- Ultra-Low Power – Display retains image with no power draw; Enable pin lets you shut down SRAM, MicroSD, and display entirely
- 3.3V and 5V Compatible – Level-shifted for safe use with any microcontroller
- CircuitPython and Arduino Support – Adafruit_GFX compatible library handles all the heavy lifting
Also Available
- 2.9" Tri-Colour eInk FeatherWing – For Feather boards with buttons
- 2.9" Grayscale eInk FeatherWing – 4-level greyscale with faster refresh
Ideal For
- Colour-coded status displays and dashboards
- Low-power signage and information boards
- Price tags and retail displays
- Battery-powered projects requiring persistent display
Package Contents
- 1× Adafruit 2.9" Tri-Colour eInk Breakout (with header strip)
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- RAM
- RAM is temporary memory used while a device is running, and its contents are lost when power is removed. A “Run in RAM” mode is useful for testing settings without permanently programming the module, but it may not support every feature.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
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Related Tutorials
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