Makers, developers and hobbyists requiring a flexible monochrome eInk display for their next project may be interested to know that Adafruit is now stocking a 2.13 inch flexible ePaper display offering a resolution of 212 x 104 pixels. Priced at $17.50 the flexible eInk display offers the same resolution as its colour counterpart although the monochrome display takes a lot less time to update, just a view seconds rather than 15 seconds of the colour display. Adafruit explains a little more.
“Woah, the cyber-future is here! Flexible E-Ink has been demo’d at high tech events for years but now you can actually get your paws on it. This display is true E-Ink / E-Paper, once an image is displayed it will stay even once you remove all power. The image is also high contrast and very daylight readable. It really does look just like printed paper!”
“Using our 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, 212 x 104 pixels = 2.5 KBytes. Which won’t fit into many microcontroller memories. Heck, even if you do have 32KB of RAM, why waste 2.5KB?”
– These displays should not be flexed/moved during a display update, you’ll get odd effects.
– Continuously flexing it will eventually damage the display.
– There’s no specification for how many times it can be flexed, so keep it minimal!
– We recommend affixing the display to a stable backing to reduce stresses. E.g. it can be attached to a stiff curved bracelet to make a watch.