Adafruit 1.54" Tri-Color eInk / ePaper Display with SRAM - 200x200 with SSD1681 and EYESPI

Easy e-paper finally comes to microcontrollers, with this breakout that's designed to make it a breeze to add a tri-color eInk display. Chances are you've seen one of those new-fangled 'e-readers' like the Kindle or Nook. They have gigantic electronic paper 'static' displays - that means the image stays on the display even when power is completely disconnected. The image is also high contrast and very daylight readable. It really does look just like printed paper!

We've liked these displays for a long time, but breakouts were never designed for makers to use. Finally, we decided to make our own!

This small 1.54" tri-color display features 200x200 black and red ink pixels with a white-ish background. Using our Arduino library, you can create a 'frame buffer' with what pixels you want to have activated and then write that out to the display.

Unlike typical breakouts which require microcontrollers with large RAM to buffer the display, this breakout includes a small SRAM chip on the back that shares the SPI port with the eInk display, needing only one extra pin. This eliminates the need for frame-buffering on the microcontroller.

You can use the SRAM to set up your display data and then shuffle it from SRAM to the eInk display when ready. The provided library abstracts the complexity, enabling you to interface as if it were an Adafruit_GFX-compatible display.

For ultra-low power applications, the onboard 3.3V regulator includes an Enable pin that allows shutting down power to the SRAM, MicroSD, and display.

The breakout also includes a MicroSD socket so you can store images, text files, or anything else you want to display. Everything supports 3 or 5V logic for use with any microcontroller.

The board comes assembled and tested with some header pins. A soldering iron is required to attach the header for breadboarding or project integration.

• 1.54" tri-color eInk display with 200x200 resolution
• SRAM chip on back for frame buffering without using MCU RAM
• Uses SSD1681 chipset for driving the eInk display
• Includes MicroSD socket for storage
• 3 or 5V logic safe
• Onboard 3.3V regulator with Enable pin
• 4 mounting holes for easy installation
• Comes assembled and tested, header pins need to be soldered on