ADAFRUIT 1.54" TRI-COLOR EINK /
EPAPER DISPLAY WITH SRAM - RED BLACK
WHITE
PRODUCT ID: 3625
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!
We're starting with this small 1.54" tri-color display. It has 152x152 black and
red ink pixels and 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. Most simple breakouts leave it at that. But if you do
the math, 152 x 152 pixels x 2 colors = 5.7 KBytes. Which won't fit into many
microcontroller memories. Heck, even if you do have 32KB of RAM, why waste
6KB?
So we did you a favor and tossed a small SRAM chip on the back. This chip
shares the SPI port the eInk display uses, 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 into your project.
TECHNICAL DETAILS
Product Dimensions: 43.6mm x 43.0mm x 5.0mm / 1.7" x 1.7" x 0.2"
Product Weight: 9.0g / 0.3oz
https://www.adafruit.com/product/3625 7‐13‐18
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