This is a test of the Embedded Artists 2.7 inch E-paper Display Module. First I connected it to a Rasperry Pi and installed the demo application, as described here, then I modified the demo app to load PNG images instead of the hardcoded images in header files. This is the result:
Tested with this image:
Modified files for the demo app for loading PNG images: main.c, Makefile. To compile it, you need to install the PNG library, first: "apt-get install libpng-dev".
The update rate of the display is slow, but once the image is uploaded to the display, it requires no power to maintain and it looks very much like paper. The datasheet says it can maintain the image without power for "hundreds of hours". I tested it for some days and can confirm this. In fact it showed the Embedded Artists demo image when I got it, so maybe a week shipping time from the vendor, to the distributor and then to me in cold weather outside was no problem. And there is no background light, the image very much like paper. You can see it even outside when the sun is shining, unlike with some other display technologies.
Video of the demo application and my PNG loader:
The other demo image in the video was from openclipart, scaled and converted to black/white with a diffusion dither with Photoshop:
