Difference between revisions of "4.2inch e-Paper Module (B)"

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{{Amazon|{{#urlget:amazon|default}}=display
 
{{Amazon|{{#urlget:amazon|default}}=display
 
|More = [http://www.waveshare.com/product/4.2inch-e-paper-module-b.htm More]}}
 
|More = [http://www.waveshare.com/product/4.2inch-e-paper-module-b.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 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 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 --> booster soft start --> power on --> panel 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 -> booster soft start -> power on -> panel setting.
 
=== Configuration of LUT table(SetLut) ===
 
=== Configuration of LUT table(SetLut) ===
 
Look-up table is stored in the module, which is provided by us. So the table may be different among different batches. If the table changed, we will update the demo code as soon as possible.  
 
Look-up table is stored in the module, which is provided by us. So the table may be different among different batches. If the table changed, we will update the demo code as soon as possible.  
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DisplayFrame is used to send a frame to module, and the screen will refresh and display it.
 
DisplayFrame is used to send a frame to module, and the screen will refresh and display it.
  
Process: Send command data start transmission 1 --> Send data of the black part of the image --> Send command data start transmission 2 --> Send data of the red part of the image --> Refresh the screen.
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Process: Send command data start transmission 1 -> Send data of the black part of the image -> Send command data start transmission 2 -> Send data of the red part of the image -> 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: VCOM and data interval setting --> power off --> deep sleep  
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Process: VCOM and data interval setting -> 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 400x300.
 
# Open a picture with drawing tool comes with Windows system, create a new image, and set the pixel to 400x300.
# 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 are two monochrome bitmap on examples pack, which are used for demonstration (raspberrypi/python/black.bmp and raspberrypi/python/red.bmp).
 
#: There are two monochrome bitmap on examples pack, which are used for demonstration (raspberrypi/python/black.bmp and raspberrypi/python/red.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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#* Inverse color: Check (Check: the white on image will be inversed to 1, and black is inversed to 0)
 
#* Inverse color: Check (Check: the white on image will be inversed to 1, and black is inversed to 0)
 
# 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.
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-->
  
 
== Resources ==
 
== Resources ==
 
=== Documentation ===
 
=== Documentation ===
* [[:File:4.2inch_e-Paper_Module_B_Schematic.pdf|Schematic]]
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*[https://www.waveshare.com/w/upload/2/20/4.2inch-e-paper-module-b-user-manual-en.pdf User Manual]
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{{Commom Instruction of SPI e-paper}}
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* [[:File:4.2inch_e-Paper_Schematic.pdf|Schematic]]
  
 
=== Demo code ===
 
=== Demo code ===
 
* [[:File:4.2inch-e-paper-module-b-code.7z|Demo code]]
 
* [[:File:4.2inch-e-paper-module-b-code.7z|Demo code]]
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*[https://github.com/waveshare/e-Paper Github]
  
 
=== Datasheets ===
 
=== Datasheets ===
 
* [[:File:4.2inch-e-paper-b-specification.pdf|Datasheets]]
 
* [[:File:4.2inch-e-paper-b-specification.pdf|Datasheets]]
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===Related Resources===
 +
This is a post in Arduino Form about our SPI e-Paper thanks to ZinggJM, maybe you want to refer to.
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*[https://forum.arduino.cc/index.php?topic=487007.0 Waveshare e-Paper display with SPI]
 +
 
== FAQ ==
 
== FAQ ==
 
<!--{{e-Paper FAQ}}-->
 
<!--{{e-Paper FAQ}}-->

Revision as of 02:15, 26 March 2019

4.2inch e-Paper (B)
lik=https://www.waveshare.com/4.2inch-e-Paper-B.htm

400x300, 4.2inch E-Ink display raw panel
4.2inch e-Paper Module (B)
4.2inch-e-paper-module-b-3.jpg

400x300, 4.2inch E-Ink display module, three-color, SPI interface
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Introduction

Note: As the raw panel requires a driver board, we recommend you to buy the HAT or buy a driver board for use, or you need to make the driver board by yourself. And this instruction is based on the version with PCB or driver board.

400x300, 4.2inch E-Ink display module, three-color, SPI interface

More

Resources

Documentation

Demo code

Datasheets

Related Resources

This is a post in Arduino Form about our SPI e-Paper thanks to ZinggJM, maybe you want to refer to.

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.