Difference between revisions of "7.5inch e-Paper HAT"

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{{Amazon|{{#urlget:amazon|default}}=display
 
{{Amazon|{{#urlget:amazon|default}}=display
 
|More = [http://www.waveshare.com/7.5inch-e-paper-hat.htm More]}}
 
|More = [http://www.waveshare.com/7.5inch-e-paper-hat.htm More]}}
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== Interfaces ==
 
== Interfaces ==
 
{|class="wikitable"
 
{|class="wikitable"
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==== Expected result ====
 
==== Expected result ====
# 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
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# 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
 
# Upload the project.
 
# Upload the project.
 
# E-paper will display the image.
 
# E-paper will display the image.
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=== Initialization (Init) ===
 
=== Initialization (Init) ===
After powering on the module, initialization function (Init) will configure the parameters of module. It can also wake up module from sleep mode. Process of initialization: reset --> power setting --> panel setting --> booster soft start --> power on --> PLL control --> temperature calibration --> VCOM and data interval setting --> TCON setting --> TCON resolution --> VCM DC setting.
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After powering on the module, initialization function (Init) will configure the parameters of module. It can also wake up module from sleep mode. Process of initialization: reset -> power setting -> panel setting -> booster soft start -> power on -> PLL control -> temperature calibration -> VCOM and data interval setting -> TCON setting -> TCON resolution -> VCM DC setting.
 
=== Display a Frame (DisplayFrame) ===
 
=== Display a Frame (DisplayFrame) ===
 
DisplayFrame is used to send a frame to the module, and the screen will refresh and display it.
 
DisplayFrame is used to send a frame to the module, and the screen will refresh and display it.
  
Process: Send command data start transmission 1 --> Send data of an image to display --> Refresh the screen.
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Process: Send command data start transmission 1 -> Send data of an image to display -> Refresh the screen.
  
 
Note:
 
Note:
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Sleep can make the module go into sleep mode to reduce the consumption.
 
Sleep can make the module go into sleep mode to reduce the consumption.
  
Process: power off --> deep sleep
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Process: power off -> deep sleep
  
 
If you want to wake up the module from sleep mode, you need to give a LOW pulse to RST pin. Then maybe you need to reconfigure the parameter of power (According to the batches, some of them need to reconfigure, some needn’t). So if you want to wake up module, you had better use the Init function instead of Reset. Reset function and relative commands will be executed while executing the Init function.
 
If you want to wake up the module from sleep mode, you need to give a LOW pulse to RST pin. Then maybe you need to reconfigure the parameter of power (According to the batches, some of them need to reconfigure, some needn’t). So if you want to wake up module, you had better use the Init function instead of Reset. Reset function and relative commands will be executed while executing the Init function.
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# Open a picture with drawing tool comes with Windows system, create a new image, and set the pixel to 640x384.
 
# Open a picture with drawing tool comes with Windows system, create a new image, and set the pixel to 640x384.
# Because this module can only display two gray level (Only black and white), we need to convert picture to monochrome bitmap before converting it to array. That is, File --> BMP picture --> Monochrome Bitmap.
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# Because this module can only display two gray level (Only black and white), we need to convert picture to monochrome bitmap before converting it to array. That is, File -> BMP picture -> Monochrome Bitmap.
 
#: There is a monochrome bitmap on examples pack for demonstration (raspberrypi/python/monocolor.bmp).
 
#: There is a monochrome bitmap on examples pack for demonstration (raspberrypi/python/monocolor.bmp).
 
# Use [[:File:Image2Lcd.7z|Image2Lcd.exe]] software to generate corresponding array for picture (.c file). Open picture with this software, set the parameters:
 
# Use [[:File:Image2Lcd.7z|Image2Lcd.exe]] software to generate corresponding array for picture (.c file). Open picture with this software, set the parameters:
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# Click “Save”, to generate .c file. Copy the corresponding array into your project, and you can display picture by calling this array.
 
# Click “Save”, to generate .c file. Copy the corresponding array into your project, and you can display picture by calling this array.
 
* Note: the module decodes the image data as: 4 bits = 1 pixel, but due to Gray scale unsupported, a monochrome bitmap array (1 bit = 1 pixel) is enough. Once the program finds a bit set in a bitmap table, it will send 0x3; but if a bit reset, it will send 0x0. For example, if the program decodes a byte 0xAA in a bitmap table, it will send 0x30303030 in fact.
 
* Note: the module decodes the image data as: 4 bits = 1 pixel, but due to Gray scale unsupported, a monochrome bitmap array (1 bit = 1 pixel) is enough. Once the program finds a bit set in a bitmap table, it will send 0x3; but if a bit reset, it will send 0x0. For example, if the program decodes a byte 0xAA in a bitmap table, it will send 0x30303030 in fact.
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== Resources ==
 
== Resources ==
 
=== Documentation ===
 
=== Documentation ===
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*[https://www.waveshare.com/w/upload/7/74/7.5inch-e-paper-hat-user-manual-en.pdf User Manual]
 
{{Commom Instruction of SPI e-paper}}
 
{{Commom Instruction of SPI e-paper}}
 
* [[:File:E-Paper-Driver-HAT-Schematic.pdf|Schematic]]
 
* [[:File:E-Paper-Driver-HAT-Schematic.pdf|Schematic]]

Revision as of 09:22, 25 December 2018

7.5inch e-Paper raw Panel
7.5inch-e-Paper-1.jpg

640x384, 7.5inch E-Ink raw panel without driver board
7.5inch e-paper HAT
7.5inch-e-paper-hat-4.jpg

640x384, 7.5inch E-Ink display HAT for Raspberry Pi, SPI interface
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Introduction

Note: The raw panel require a driver board, If you are the first time use this e-Paper, we recommend you to buy the HAT 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 HAT version.

640x384, 7.5inch E-Ink display HAT for Raspberry Pi, SPI interface


More

Resources

Documentation

Demo code

Datasheets

Related applications (shared by user)

FAQ

 Answer:
  • Two-color B/W e-paper
    • 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
    • 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
    • 【Transport】Temperature: -25~70°C; Max transport time: 10 days
    • 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h
  • Three-Color e-Paper
    • 【Working】Temperature: 0~40°C; Humidity: 35%~65%RH
    • 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 3 months
    • 【Transport】Temperature: -25~60°C; Max transport time: 10 days
    • 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

When store three-color e-Paper, please refresh it to white, and keep the screen upward. Note that you need to update it at least every three months.


Support

Support

If you require technical support, please go to the Support page and open a ticket.