9.7inch e-Paper HAT

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9.7inch e-Paper raw Panel
9.7inch-ePaper.JPG

1200×825, 9.7inch E-Ink raw panel without driver board
9.7inch e-paper HAT
9.7inch-e-Paper-HAT.JPG

1200×825, 9.7inch E-Ink display HAT for Raspberry Pi, USB/SPI/I80/I2C interface
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Primary Attribute
Category: OLEDs / LCDs, LCD
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Brand: Waveshare
Website
English: Waveshare website
Chinese: 官方中文站点
Onboard Interfaces
I2C I80 SPI USB
Related Products

Note

9.7inch e-Paper is big size screen, the glass panel and FPC is fragile, please be careful when use it for developing. we recommend you to reinforce the FPC with scotch tape when developing.

There are two version, one is raw panel and another is HAT version. Driver board (IT8951) is required for raw panel, if you are the first time to buy this e-paper, recommend you to choose HAT version which come with the driver board.

Introduction

9.7inch E-Ink display HAT for Raspberry Pi, 1200×825 resolution, 16 gray scale, USB/SPI/I80/I2C interface

More

Features

  • No backlight, keeps displaying last content for a long time even when power down
  • Low power consumption, basically power is only required for refreshing
  • Compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+
  • USB/SPI/I80/I2C interface, for connecting with host boards like Raspberry Pi/Nucleo, etc.
  • Comes with development resources and manual (examples for Raspberry Pi/STM32)

Specifications

  • Operating voltage: 5V
  • Interface: USB/SPI/I80/I2C
  • Outline dimension: 218.8mm × 156.425mm × 1.15mm
  • Display size: 202.8mm × 139.425mm
  • Dot pitch: 0.169 × 0.169
  • Resolution: 1200 × 825
  • Display color: black, white
  • Gray scale: 2-16 (1-4 bit)
  • Full refresh time: <1s
  • Total refresh power: 0.6W(typ.)
  • Total standby power: 0.3W(typ.)
  • Viewing angle: >170°


16-grey-scale2.jpg

Working principle

This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.

How to use

Working with Raspberry Pi

Installing libraries required

If you want to connect your E-paper screen to Raspberry Pi, you should install some necessary libraries, or else the Demo (click to download) below may work improperly. For more information about how to install the Raspberry Pi libraries, please visit the website: Libraries Installation for RPi.

You can find the detailed presentation about the installations of libraries wiringPi, bcm2835 and python.

Hardware connection

Here is the connection between Raspberry Pi 3B and E-paper.

e-Paper Raspberry Pi 3B
3.3V 3.3V
GND GND
DIN MOSI
CLK SCLK
CS CE0
DC Pin22/GPIO25
RST Pin11/GPIO17
BUSY Pin18/GPIO24

Expected result

1) After the libraries required installed, you can copy the relative programs into your Raspberry Pi, and then enter the corresponding file.

  • BCM2835: Execute the command: make, to compile the code and generate a file epd. Execute the command: sudo ./epd, the program will run.
  • WringPi: Execute the command: make, to compile the code and generate a file epd. Execute the command: sudo ./epd, the program will run.
  • Python: Execute the command: sudo python main.py

2) Image will be displayed on the screen.

  • Note:The refresh rate of this module is slow (about 6s), and it will flicker for several times during refreshing. Please be patient.

Working with Arduino

Hardware connection

e-Paper UNO PLUS (3.3V)
3.3V 3V3
GND GND
DIN D11
CLK D13
CS D10
DC D9
RST D8
BUSY D7

Expected result

  1. Copy the libraries file of Arduino demo code to the libraries folder which is under the installation directory of Arduino IDE, it's path usually is C:\users\username\documents\arduino\libraries. You can also designate the location on Arduino IDE--> File -->Preferences -->Sketchbook location
  2. Upload the project.
  3. E-paper will display the image.

Note:

  • The refresh rate of this module is slow (about 6s), and it will flicker for several times during refreshing. Please be patient.

Working with the STM32 development board

  • Here we use STM32F103ZE development board.
  • The demo code is based on HAL, so you can port the demo code to other STM board with STM32CubeMX.
  • The demo code can be compiled successfully in Keil v5

Hardware connection

Connecting to the STM32F103ZE:

e-Paper STM32F103ZE
3.3V 3V3
GND GND
DIN PA7 (MOSI)
CLK PA5 (SCK)
CS PA4
DC PA2
RST PA1
BUSY PA3