Adafruit 2.7 inch Tri-Colour eInk/ePaper Display with SRAM (Red Black White)
Adafruit 2.7 inch Tri-Colour eInk/ePaper Display with SRAM (Red Black White)
Adafruit 2.7 inch Tri-Colour eInk/ePaper Display with SRAM (Red Black White)
- This breakout is designed to make it a breeze to add a tri-colour eInk display to your project
- A tri-coloured display (Red, Black and White)
- Use the provided Arduino or CircuitPython libraries for an easy setup
- Use the onboard microSD card slot and SRAM to display images or text without buffering
- Easily controlled via SPI making it perfect for use with an Arduino based board
| Brand: | Adafruit |
|---|---|
| Color: | Red, black, white. |
| Part Number: | QH7RSYL |
| Isin: | I0YSAMMNID5A |
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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!
This breakout has a 2.7 inch tri-colour (red, black, and white) display. It has 264x176 black and red ink pixels and a white-ish background. Using the CircuitPython or Arduino libraries, 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, 264 x 176 pixels x 2 colours = 11.5 KBytes. Which won't fit into many microcontroller memories. Heck, even if you do have 32KB of RAM, why waste 12KB?
They've done you a favour 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.
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.
There is even 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.
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