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Papyr nRF52840 ePaper Display

BLE/802.15.4 Low Power ePaper Display based on Nordic nRF52840.

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With the exploding number of connected devices being deployed, power consumption is a major concern. Technologies like BLE (Bluetooth Low Energy) are built from the ground up with low power consumption in mind. Another technology which is extremely low power is the e-paper display, which was made famous by its adoption by Amazon for the Kindle devices. Papyr from Electronut labs combines these two core ideas - a low power wireless technology combined with a low power display system. By choosing the Nordic nRF52840 SoC, Papyr is able to support not only BLE but mesh networking protocols like Thread, BLE Mesh, and Zigbee. Papyr has many extras too - like build in NFC antenna for BLE pairing or Thread commisioning, CR2477 battery holder, micro USB port, extra GPIOs, RGB LED, etc. There are a lot of applications possible with Papyr - dynamic price tags, for example, or sensor data display in a mesh network. Papyr can be used anywhere you need a low power, connected display.

Hardware Specifications

  • Raytac MDBT50 module with Nordic nRF52840 BLE/802.15.4 SoC
  • 1.54 inch 200x200 pixel red/black/white epaper display
  • CR2477 coin cell holder
  • Micro USB (device)
  • RGB LED
  • NFC (PCB) antenna
  • Push button
  • USB/Battery power switch
  • Extra GPIOs
  • SWD Programming header
  • Mounting holes

Schematic

https://gitlab.com/electronutlabs-public/papyr/blob/master/hardware/papyr_schematic_v_0_3.pdf

Documentation

https://docs.electronut.in/papyr/#what-is-papyr

Purchase on Tindie Store

https://www.tindie.com/products/ElectronutLabs/papyr-nordic-nrf52840-epaper-display/

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Discussions

prosto wrote 6 days ago point

I need 4 buttons or potenciometer buttons like in 3d printer

is possible add solar panel?

  Are you sure? yes | no

Mahesh Venkitachalam wrote 4 days ago point

Papyr breaks out 4 GPOIs, so you can add more sensors and peripherals. You could even use a GPIO expander chip so you can control more devices.

  Are you sure? yes | no

Mahesh Venkitachalam wrote 4 days ago point

You can add a solar panel + energy harvesting and supply power via the VDD pin.

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