Adafruit 1.54" Tri-Colour eInk / ePaper Display with SRAM - 200 x 200 with SSD1681 and EYESPI

AdafruitSKU: ADA4868
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Easy e-paper finally comes to microcontrollers, with this breakout that's designed to make it a breeze to add a tri-colour 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!

We're starting with this small 1.54" tri-colour display. It has 200 x 200 black and red ink pixels and a whiteish background. Using our Arduino library, you can create a 'frame buffer' with the pixels you want to have activated and then write that out on the display. Most simple breakouts leave it at that. But if you do the math, 200 x 200 pixels x 2 colors = 10 KBytes. Which won't fit into many microcontroller memories. Even if you have 32KB of RAM, why waste 10KB?

So we did you a favour and tossed a small SRAM chip on the back. This chip shares the eInk display's SPI port, so you only need one extra pin. And, no more frame-buffering! You can use the SRAM to set up whatever you want to display, then shuffle data from SRAM to eInk when you're ready. The library we wrote does all the work for you; you can just interface with it as if it were an Adafruit_GFX-compatible display.

For ultra-low power usages, the onboard 3.3V regulator has the Enable pin brought out so you can shut down the power to the SRAM, MicroSD, and display.

We even tossed on a MicroSD socket so you can store images, text files, whatever you like to display. Everything is 3 or 5V logic safe so you can use it with any and all microcontrollers.

Comes assembled and tested, with some header. You'll need a soldering iron to attach the header for breadboarding or installing it into your project.

Note: Breadboard, cables and electronic board are NOT included.

Revision History

As of November 1, 2024 – We updated this display breakout with Adafruit Pinguin to make a lovely and legible silkscreen. There is also the new EYESPI connector, which makes cabling easier with an 18-pin FPC.

Specifications

  • Overall dimension: 43.5mm x 43mm x 4.8mm
  • 2.5mm mounting holes in corners
  • Display size: 28mm x 28mm
  • Weight: 9.1g
  • Uses SSD1681 chipset for driving E-Ink display

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