Adafruit
Adafruit 2.9 Grayscale eInk / ePaper Display FeatherWing - 4 Level Grayscale
Add a versatile grayscale eInk display to your Feather project with this 2.9" FeatherWing. The 296×128 pixel panel supports four levels of grey — white, ligh...
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Add a versatile grayscale eInk display to your Feather project with this 2.9" FeatherWing. The 296×128 pixel panel supports four levels of grey — white, light grey, dark grey, and black — giving you more visual depth than a standard monochrome display while refreshing in about one second, far faster than tri-colour eInk panels.
The FeatherWing is tested to work with all Adafruit Feather boards, from the ESP8266 to the M0 and beyond. An onboard SRAM chip handles frame buffering so even memory-constrained microcontrollers can drive the display without sacrificing precious RAM. A MicroSD socket provides storage for images and text files, and three optional buttons are available for navigation when your Feather has spare pins.
Key Features
- 2.9" Grayscale eInk Display – 296×128 pixel resolution with 4-level greyscale
- Fast Refresh – Updates in approximately 1 second (vs ~15 seconds for tri-colour)
- Onboard SRAM – Offloads frame buffering from the microcontroller (~9.5 KB at 2 bits per pixel)
- MicroSD Socket – Store images, text files, and display assets
- 3 Optional Buttons – Built-in navigation buttons for Feathers with available pins
- Ultra-Low Power – Display retains image with no power draw
- No Soldering Required – Comes with socket headers; plug your Feather straight in
- Universal Feather Compatibility – Works with all Adafruit Feather boards
Also Available
- 2.9" Tri-Colour eInk FeatherWing – Red, black, and white version
- 2.9" Tri-Colour eInk Breakout – Universal breakout board
Ideal For
- eBook readers and text display projects
- Low-power dashboards with nuanced graphics
- Portable information displays and name badges
- Battery-powered projects requiring persistent display
Package Contents
- 1× Adafruit 2.9" Grayscale eInk FeatherWing (with socket headers)
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- FeatherWing
- A FeatherWing is an add-on board made to plug into the Feather microcontroller board layout. Knowing a product is a FeatherWing helps you check whether it will physically and electrically fit your Feather-style mainboard.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RAM
- RAM (random-access memory) is fast, temporary memory a device uses for working data while it is running; in its common volatile form, its contents are lost when power is removed. Some devices offer a mode that applies settings to RAM only, which is handy for testing changes temporarily because they are not stored permanently and disappear at power-off.
- 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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