ePaper Driver Board | Seeed Studio Wiki

[giscus[bot]]

ePaper Driver Board | Seeed Studio Wiki

The eInk expansion board For XIAO is a smart module from Seeed Studio designed to display something in epaper screen.

https://wiki.seeedstudio.com/xiao_eink_expansion_board_v2/

[Dav1dyang]

Hello! Is there any schematic & pcb board files for this ePaper Driver Board for reference? Thank you!

[nfs0619]

Hello! We have updated the documentation and provided the relevant files for this board.

[Dav1dyang]

Thank you for the update! This is super helpful!

[Nerdiyde]

Hi Seeed-Team,
Do you mind sharing any 3D CAD files? Would be very helpful at integrating this in CAD.
Thanks in advance and best regards
Fab

[nfs0619]

Hi! We have updated our documentation to include all the available files for this board. Regarding the 3D CAD files, you may check the resources provided here to see if they meet your needs.

[Nerdiyde]

Hi,
thanks for the update. I was refering to the CAD files of the PCB/extension board. I would like to integrate this in my own housing. Having the right dimensions/3d file of the PCB would make this a lot easier. :) Do you mind sharing this?
Thanks in advance

[nfs0619]

We’re sorry, but the files provided in our wiki documentation are the only ones we can share at the moment.

[tomtom13]

So, I can't the file:
ePaper_Breakout_Board_for_XIAO_V2_PCBA.pdf
says "access denied". Would be nice if you guys fixed it, since I would like to implement the battery monitoring.

[nfs0619]

Thank you for your feedback! We have fixed the issue with the link, and you should now be able to access the file.

[tomtom13]

OK, so I've looked through the circuit diagram - am I right to assume that there is no way to measure voltage on connected esp32 board to figure out current battery level ?

[Allen-Kuang]

Yes, because there are no extra ADC pins available to read the battery level.

[nebelgrau77]

The instructions on using the driver are not very clear:

Step 3. Install Seeed Arduino LCD Library
Download and install the Seeed Arduino LCD library from GitHub.

OK, but there is no "install", it is a repository that gets cloned into a folder. And the instructions in the repo say:

Installation
Download this repository
Install it into your Arduino libraries folder
Select the appropriate setup configuration for your hardware

Then in the instructions here it says "After downloading the library, go to Sketch -> Include Library -> Add .ZIP Library and select the downloaded library." - but there is no ZIP file to select.

Am I supposed to copy the cloned repo into Arduino libraries folder? How can I use this library?

[nfs0619]

Hello,
When you click the link in our documentation to open the GitHub repository, you don’t need to manually git clone it. Instead, click the Code button on the repository page and select Download ZIP (see image below):

After downloading the ZIP file, follow the next step in our tutorial:
Sketch → Include Library → Add .ZIP Library
and select the downloaded ZIP file to install the library into Arduino.

This way, you don’t need to manually copy anything into the libraries folder—Arduino will handle the installation automatically.

[nebelgrau77]

Great, thank you! This worked. It might be worth making it clear like this in the instructions.

One more thing: in the repository README there is a link to a convenient "configuration tool", which generates two lines of code to be placed in driver.h header file, and this file is then supposed to go to the library folder (this could be explained better). The driver.h file, if present, overrides the commenting/uncommenting of various lines. If I understand correctly, it is all based on a code indicating the display, e.g. BOARD_SCREEN_COMBO 508 is 2.13 inch monochrome ePaper Screen. This is easier and "cleaner" than modifying the User_Setup_Select file, maybe could be mentioned here in the setup instructions.

[nfs0619]

Thank you for your valuable feedback!
We’ll take your suggestions into consideration when we review and improve our documentation.

[sysrs]

I'm hoping to use this ePaper Driver board with a XIAO ESP32C6 and a Three-Colour 1.54" E-Ink Raw Display Panel (200x200) (https://www.waveshare.com/w/upload/9/9e/1.54inch-e-paper-b-v2-specification.pdf).

I've managed to run a test script and the screen responds, but is not showing test images and text correctly. It's responding very slowly indeed, and instead of a clear test rectangle for example, I get a lot of red random pixels over the top.

Are these 3 (drive board, ESP32C6, 1.54' 3 colour display) compatible?

[Allen-Kuang]

A32-GDEM0154Z91-210831.zip
Please try this demo, remember to change the SPI pins~

[sysrs]

Thanks very much. I've gotten a little further but things aren't quite working correctly. Still here was a little video of what happens.

Untitled.mov

As per (https://wiki.seeedstudio.com/xiao_eink_expansion_board_v2/) I changed SPI pins to..

//IO settings
int BUSY_Pin = 2;
int RES_Pin = 0;
int DC_Pin = 21;
int CS_Pin = 1;
int SCK_Pin = 19;
int SDI_Pin = 18;

Any more thoughts?

Do you know of any library that I can use with a function that I was pass a text (like "Hello world") and the display will print the text?

[Dav1dyang]

Hello! Is there any way I could use the Seeed studio GFX Library with custom eInk display that is not listed in the Online Configuration Generator? I wanted to use this driver board with 10.85 inch ePaper from WaveShare: https://www.waveshare.com/10.85inch-e-paper-hat-plus-g.htm Thanks in advance!