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| − | <div class="tabber">
| + | {{#tweekihide:firstHeading|sidebar-left|sidebar-right}}__NOTOC__ |
| − | <div class="tabbertab" title="Instruction">
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| − | {{Infobox item
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| − | |name=2.66inch e-Paper (B)
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| − | |name2=2.66inch e-paper Module (B)
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| − | |img=[[File:2.66inch-e-Paper-B-1.jpg|300px|link=https://www.waveshare.com/2.66inch-e-paper-b.htm]]
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| − | |img2=[[File:2.66inch-e-Paper-Module-B-1.jpg|300px|link=http://www.waveshare.com/2.66inch-e-paper-module-B.htm]]
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| − | |caption=296x152, 2.66inch E-Ink raw panel without driver board
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| − | |caption2=296x152, 2.66inch E-Ink display HAT for Raspberry Pi, SPI interface
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| − | |category=[[:Category:OLEDs / LCDs|OLEDs / LCDs]], [[:Category:LCD|LCD]], [[:Category:Display|e-Paper]]
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| − | |brand=Waveshare
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| − | |{{#urlget:amazon|default}}=display
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| − | |website_cn=[https://www.waveshare.net/shop/2.66inch-e-Paper-Module-B.htm 官方中文站点]
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| − | |website_en=[http://www.waveshare.com/2.66inch-e-paper-module-B.htm Waveshare website]
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| − | |interface1=SPI
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| − | |related=
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| − | {{Product List|OLEDs / LCDs/e-Paper}}
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| − | }}
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| − | | |
| − | == Introduction ==
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| − | | |
| − | '''Note:''' The raw panel requires a driver board, If you are the first time use this e-Paper, we recommend you to buy the Module version or buy more one driver hat for easy use, otherwise you need to make the driver board yourself. And this instruction is based on the module version.
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| − | | |
| − | 296x152, 2.66inch E-Ink display HAT for Raspberry Pi, SPI interface
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| − | | |
| − | {{Amazon|{{#urlget:amazon|default}}=display
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| − | |More = [http://www.waveshare.com/2.66inch-e-paper-module.htm More]}} | |
| − | ==Features==
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| − | *Operating Voltage: 3.3V/5V (The raw panel only support 3.3V)
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| − | *Interface: SPI
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| − | *Outline Dimensions: 37.0 x 83.5mm
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| − | *Display Size: 30.704 x 60.088mm
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| − | *Dot Pitch: 0.202 x 0.203mm
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| − | *Resolution: 296 x 152
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| − | *Display Color: Black, White, Red
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| − | *Grayscale: 2
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| − | *Full Refresh Time: 15s
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| − | *Refresh Power: 16.4mW(Typ.)
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| − | *Standby Current: <0.01uA (almost none)
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| − | *Viewing Angle: >170°
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| − | == Interfaces ==
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| − | {|class="wikitable"
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| − | |-
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| − | | VCC || 3.3V
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| − | |-
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| − | | GND || GND
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| − | |-
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| − | | DIN || SPI MOSI
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| − | |-
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| − | | CLK || SPI SCK
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| − | |-
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| − | | CS || SPI chip select (Low active)
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| − | |-
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| − | | DC || Data/Command control pin (High for data, and low for a command)
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| − | |-
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| − | | RST || External reset pin (Low for reset)
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| − | |-
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| − | | BUSY || Busy state output pin (Low for busy)
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| − | |}
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| − | ==SPI timing==
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| − | | |
| − | 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 displays patterns by reflecting the ambient light, so it has no background light requirement. Under ambient light, the E-paper screen still has high visibility with a wide viewing angle of 180 degrees. It is the ideal choice for E-reading. ('''Note that the e-Paper cannot support updating directly under sunlight''')
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| − | ; Communication protocol
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| − | ----
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| − | [[File:1.54inch-e-paper-manual-1.png|400px]]
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| − | | |
| − | Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has a display requirement.
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| − | * CS is the slave chip select. When CS is low, the chip is enabled.
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| − | * DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
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| − | * SCLK is the SPI communication clock.
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| − | * SDIN is the data line from the master to the slave in SPI communication.
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| − | SPI communication has data transfer timing, which is combined with CPHA and CPOL.
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| − | # CPOL determines the level of the serial synchronous clock at an idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
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| − | # CPHA determines data is collected at the first clock edge or at the second clock edge of the serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.
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| − | * There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.
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| − | As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. Here, SPI0 is in used, and data is transferred by bits, MSB first.
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| − | | |
| − | ==Working protocoal==
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| − | ===Pixel & Byte===
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| − | We define the pixels in a monochrome picture, 0 is black and 1 is white.<br />
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| − | White：□，Bit 1<br />
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| − | Black：■：Bit 0<br />
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| − | *The dot in the figure is called a pixel. As we know, 1 and 0 are used to define the color, therefore we can use one bit to define the color of one pixel, and 1 byte = 8pixels<br />
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| − | *For example, If we set the first 8 pixels to black and the last 8 pixels to white, we show it by codes, they will be 16 bit as below:<br />
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| − | [[file:e-paper_hardware_work_1.png]]<br />
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| − | For computer, the data is saved in MSB format:<br />
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| − | [[file:e-paper_hardware_work_2.png]]<br />
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| − | So we can use two bytes for 16 pixels.<br />
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| | | | |
| − | For e-paper B, the display colors are red, black, and white. We need to split the picture into 2 pictures, one is the black and white picture, another is the red and white picture. When transmitting, because one register controls a black or white pixel, one controls Red or white display. The black and white part of display use 1 byte to control 8 pixels, and the red and white part use 1 byte to control 8 pixels.<br />
| + | <div style="background-color: #343434;text-align: center;color: white;padding: 20px;margin: 8px;"> |
| − | For example, suppose there are 8 pixels, the first 4 are red, and the back 4 are black:<br />
| + | =2.66inch e-Paper Module (B) Manual= |
| − | They need to be disassembled into a black and white picture and a red and white picture. Both pictures have 8 pixels, but the first four pixels of the black and white picture are white, the last 4 pixels are black, and the first 4 pixels of the red and white picture One pixel is red, and the last four pixels are white. <br />
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| − | :[[File:2.13inch-epPaer-B-pixels.png]] | |
| − | If you define that the data of white pixel is 1 and the black is 0, then we can get:
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| − | :[[File:2.13inch-epPaer-B-pixels-2.png]] | |
| − | So that we can use 1 byte to control every eight pixels.
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| − | :[[File:2.13inch-epPaer-B-pixels-3.png]]
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| | </div> | | </div> |
| − | <div class="tabbertab" title="User Guides of Pi"> | + | <p></p> |
| | + | {{ContentGrid|grid-gap=25px |
| | + | |content = |
| | + | {{StudyCard |
| | + | |img=[[File:E-Paper_Introduction_4.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Overview]] |
| | + | |heading = Introduction |
| | + | |content = Parameters, principles, and precautions |
| | + | }} |
| | + | {{StudyCard |
| | + | |img=[[File:Rapberry Pi.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Working_With_Raspberry_Pi]] |
| | + | |heading = Working with Raspberry Pi |
| | + | |content = User guides for the development demo of C language, Python |
| | + | }} |
| | + | {{StudyCard |
| | + | |img=[[File:Arduino00.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Working_With_Arduino]] |
| | + | |heading = Working with the Arduino |
| | + | |content = User guides for the development demo based on Arduino UNO R3 |
| | + | }} |
| | + | {{StudyCard |
| | + | |img=[[File:Jetson Arduino00.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Working_With_Jetson_Nano]] |
| | + | |heading = Working with the Jetson Nano |
| | + | |content = User guides for the development demo of C language, Python |
| | + | }} |
| | + | {{StudyCard |
| | + | |img=[[File:Sunrise X3 Pi.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Working_With_Sunrise_X3_Pi]] |
| | + | |heading = Working with Sunrise X3 Pi |
| | + | |content = User guides for the development demo based on Python |
| | + | }} |
| | + | {{StudyCard |
| | + | |img=[[File:STM321.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Working_With_STM32]] |
| | + | |heading = Working with the STM32 |
| | + | |content = User guides for the development demo based on STM32CubeMX |
| | + | }} |
| | + | {{StudyCard|img=[[File:E-Paper_ESP32.jpg|110px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#ESP32.2F8266]] |
| | + | |heading = Working with ESP32/8266 |
| | + | |content = User guides for ESP32/8266}} |
| | | | |
| − | We provide several examples for testing, you can test the e-Paper by following the guides. If your developing board is different, you need to write your codes yourself by following the resources.
| + | {{StudyCard |
| − | {{Raspberry Pi Guides for SPI e-Paper}} | + | |img=[[File:Resource0.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Resources]] |
| − | </div>
| + | |heading = Resources |
| − | <div class="tabbertab" title="User Guides of Jetson Nano">
| + | |content = Documentation, procedures and data sheets, etc |
| − | {{Jetson Nano Guides for SPI e-Paper}}
| + | }} |
| − | </div>
| + | {{StudyCard |
| − | <div class="tabbertab" title="User Guides of STM32">
| + | |img=[[File:FAQ01.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#FAQ]] |
| − | {{STM32 Guides for SPI e-Paper}}
| + | |heading = FAQ |
| − | </div>
| + | |content = e-Paper frequently asked questions |
| − | <div class="tabbertab" title="User Guides of Arduino">
| + | }} |
| − | {{Arduino Guides for SPI e-Paper}}
| + | {{StudyCard |
| − | </div>
| + | |img=[[File:support00.jpg|121px|link=https://www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)_Manual#Support]] |
| − | <div class="tabbertab" title="User Guides of ESP32">
| + | |heading = Support |
| − | {{ESP32 Guides for SPI e-Paper}}
| + | |content = Technical support |
| − | </div>
| + | }} |
| − | <div class="tabbertab" title="User Guides of ESP8266">
| + | }} |
| − | {{ESP8266 Guides for SPI e-Paper}}
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| − | </div>
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| − | <div class="tabbertab" title="Resources">
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| − | | |
| − | == Resources ==
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| − | === Documentation ===
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| − | {{Commom Instruction of SPI e-paper}} | |
| − | *[https://www.waveshare.com/w/upload/6/67/2.66inch_e-Paper_Schematic.pdf 2.66inch e-Paper Shcematic]
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| − | *[https://www.waveshare.com/w/upload/e/ec/2.66inch-e-paper-b-specification.pdf 2.66inch e-Paper (B) Specification]
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| − | ===Demo code===
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| − | *[https://github.com/waveshare/e-Paper Github]
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| − | | |
| − | </div>
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| − | <div class="tabbertab" title="FAQ">
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| − | | |
| − | ==FAQ ==
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| − | <!--{{e-Paper FAQ}}-->
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| − | {{e-Paper FAQ}}
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| − | </div>
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| − | <div class="tabbertab" title="Support">
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| − | ==Support==
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| − | {{Service00}}
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| − | </div>
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| − | </div>
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