British company Pi Supply has created a low-power, low-cost e-ink display module for the Raspberry Pi do-it-yourself single-board computer. PaPiRus, as it's called, comes in three interchangeable screen sizes (1.44, 2.0, or 2.7 in), and like all e-paper devices it's readable in sunlight and it remains on (which is to say it can display a static image) for a very long time without power. Its creators note that it is particularly well suited to data-logging applications and outdoor displays.
PaPiRus fits the recently-released Raspberry Pi 2 Model B as well as prior models A+ and B+. It comes with 32 megabits of flash memory, along with a battery-backed real-time clock with a wake-on-alarm functionality (if connected via an optional "pogo pin" to the Raspberry Pi "RUN" header). It also has a temperature sensor and a general-purpose input/output (GPIO) breakout connector, as well as four optional slimline switches that fit on the top of the board.
Sick of Ads?
Join more than 500 New Atlas Plus subscribers who read our newsletter and website without ads.
It's just US$19 a year.More Information
The 1.44-inch (3.66-cm) screen has a resolution of 128 by 96 pixels, the 2.0-inch (5.1-cm) display has 200 by 96 pixels, and the larger 2.7-inch (6.86-cm) option has 264 by 176 pixels.
PaPiRus comes about thanks to a collaboration between Pi Supply and e-paper company Pervasive Displays. It integrates with the existing open-source RePaper codebase, with a suite of example code and wiring diagrams already available for the Raspberry Pi.
Pi Supply has taken PaPiRus to Kickstarter to fund a manufacturing run and add more features to the module. With around two weeks to go, the project has blown way past its £5,000 (US$7,818) funding goal. At the time of writing PaPiRus has just passed a £25,000 stretch goal to include the four optional buttons free to all backers.
You'll need to pledge at least £25 for the small screen package. A set of each of the three screens with one PaPiRus HAT board is listed at £65 or more. If all goes to plan, all packages are expected to ship in July.
You can see the PaPiRus Kickstarter pitch video below.