Difference between revisions of "2.9inch e-Paper Module"
(创建页面，内容为“==产品介绍== 这是一款2.9inch电子墨水屏显示模块， 分辨率为296x128, 支持黑白两色刷新， 通信接口为SPI接口。 ==特点== *尺寸：…”) |
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| − | == | + | ==Introduction== |
| − | + | This is an 2.9inch e-Paper module, with 296x128 resolution, SPI interface. Supports Black and white color. | |
| − | == | + | ==Features== |
| − | * | + | *Size： 2.9 inch |
| − | * | + | *Dimnesion：89.5mm × 38mm |
| − | * | + | *Display area：66.89mm × 29.05mm |
| − | * | + | *Operating voltage：3.3V/5V |
| − | * | + | *Interface：SPI |
| − | * | + | *Pitch：0.138 × 0.138 |
| − | * | + | *Resolution：296 × 128 |
| − | * | + | *Display color：Black, white |
| − | * | + | *Gray scale：2 |
| − | * | + | *Partial update: 0.3s |
| − | * | + | *Fully update:2s |
| − | * | + | *Consumption (update): 26.4mW(typ.) |
| − | * | + | *Consumption (standby): <=0.017mW |
| − | + | 【Notices】<br /> | |
| − | + | Update time: The data provided is for reference, the actual time may be different according to the MCU. The e-Paper will flicker when updating, it is normal<br /> | |
| − | + | Consumption: The data provided is for reference, the actual consumption may be different according to the driver board.<br /> | |
| − | ==SPI | + | ==SPI timing== |
[[File:e-paper-spi-timing.jpg|700px]] | [[File:e-paper-spi-timing.jpg|700px]] | ||
| − | + | The e-Paper only supports writing, therefore the MISO pin is hidden.<br /> | |
| − | + | CS is slave chip select, when CS is low, the chip is enabled.<br /> | |
| − | + | DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.<br /> | |
| − | + | SCLK is the SPI communication clock.<br /> | |
| − | + | SDIN is the data line from the master to the slave in SPI communication.<br /> | |
| − | + | Timing：CPHL=0， CPOL=0 （SPI0）<br /> | |
| − | + | 【Note】You can search more documents of SPI bus online. | |
| − | == | + | ==Working protocol== |
| − | === | + | ===Pixel & Byte=== |
| − | + | We define the pixels in a monochrome picture, 0 is black and 1 is white.<br /> | |
| − | + | White: □ Bit 1<br /> | |
| − | + | Black:■ Bit 0<br /> | |
| − | * | + | *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 /> |
| − | * | + | *For example, If we set 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 /> |
[[file:e-paper_hardware_work_1.png]]<br /> | [[file:e-paper_hardware_work_1.png]]<br /> | ||
| − | + | For computer, the data is saved in MSB format:<br /> | |
[[file:e-paper_hardware_work_2.png]]<br /> | [[file:e-paper_hardware_work_2.png]]<br /> | ||
| − | + | So we can use two bytes for 16 pixels.<br /> | |
| − | == | + | ==User Guides== |
| − | *[[E-paper for RPi Use| | + | *[[E-paper for RPi Use|Raspberry Pi guides]] |
| − | *[[E-paper for Jetsonnano Use|Jetson | + | *[[E-paper for Jetsonnano Use|Jetson Nano guides]] |
| − | *[[E-paper for STM32 Use| | + | *[[E-paper for STM32 Use|STM32 guides]] |
| − | *[[E-paper for Arduino Use| | + | *[[E-paper for Arduino Use|Arduino gudies]] |
| − | == | + | ==Resources== |
| − | === | + | ===Documents=== |
| − | *[http://47.107.148.244/w/images/5/57/2.13inch_e-Paper_HAT_Schematic.pdf | + | *[http://47.107.148.244/w/images/5/57/2.13inch_e-Paper_HAT_Schematic.pdf Schematic]<br> |
| − | + | *[http://47.107.148.244/w/images/e/e6/2.9inch_e-Paper_Datasheet.pdf 2.9inch e-Paper Datasheet] | |
| − | *[http://47.107.148.244/w/images/ | + | ===Demo codes=== |
| − | === | + | *[http://47.107.148.244/w/images/5/50/E-Paper.7z Demo codes] |
| − | *[http://47.107.148.244/w/images/ | ||
| − | |||
==FAQ== | ==FAQ== | ||
{{E-Paper FAQ}} | {{E-Paper FAQ}} | ||
Revision as of 16:04, 8 June 2020
Contents
Introduction
This is an 2.9inch e-Paper module, with 296x128 resolution, SPI interface. Supports Black and white color.
Features
- Size： 2.9 inch
- Dimnesion：89.5mm × 38mm
- Display area：66.89mm × 29.05mm
- Operating voltage：3.3V/5V
- Interface：SPI
- Pitch：0.138 × 0.138
- Resolution：296 × 128
- Display color：Black, white
- Gray scale：2
- Partial update: 0.3s
- Fully update:2s
- Consumption (update): 26.4mW(typ.)
- Consumption (standby): <=0.017mW
【Notices】
Update time: The data provided is for reference, the actual time may be different according to the MCU. The e-Paper will flicker when updating, it is normal
Consumption: The data provided is for reference, the actual consumption may be different according to the driver board.
SPI timing
The e-Paper only supports writing, therefore the MISO pin is hidden.
CS is slave chip select, when CS is low, the chip is enabled.
DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
SCLK is the SPI communication clock.
SDIN is the data line from the master to the slave in SPI communication.
Timing：CPHL=0， CPOL=0 （SPI0）
【Note】You can search more documents of SPI bus online.
Working protocol
Pixel & Byte
We define the pixels in a monochrome picture, 0 is black and 1 is white.
White: □ Bit 1
Black:■ Bit 0
- 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。
- For example, If we set first 8 pixels to black and the last 8 pixels to white, we show it by codes, they will be 16 bit as below:
For computer, the data is saved in MSB format:
So we can use two bytes for 16 pixels.
User Guides
Resources
Documents
Demo codes
FAQ
1、Working requirements of 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
2、 What do you need to note about e-Paper refreshing
- Refresh mode
- Full refresh: e-Paper flicker when full refreshing to remove ghost image for best display.
- Partial refresh: It doesn't flicker if you use partial refresh (only some of the two-color e-paper support partial refresh). Note that you cannot use Partial refresh all the time, you should full refresh e-paper regularly, otherwise, ghost problem will get worse even damage
- Refresh rate
- When using, you should set the update interval at least 180s. (except Partial supportable types)
- Please set the e-Paper to sleep mode or power off it directly, otherwise, the e-Paper is damaged because of working in high voltage for a long time.
- You need to update the content of three-color e-Paper at least one time every 24h to avoid the burn-in problem.
- Working place
- We recommend you to use the e-Paper indoor. If you need to set the e-paper outdoor, Please place the e-paper in shadow and protect it from UV. When you designed you e-paper product, you should take care about the working situation like temperature, humidity, etc.
3、Why the e-Paper display a black frame？
- You can configure Border Waveform Control register or VCOM AND DATA INTERVAL SETTING register to change the frame.
4、Could the e-Paper work again after sleeping？
- You can use the initial function to wake it up and then update.
