Hello,Maybe you can help me ?http://forum.arduino.cc/index.php?topic=478882.0Thank you.
How do you expect to get an answer, if the link in your post produces side-effects.I saw your post, but I get an error when I open the only link in your post.And after that I get strange behavior in my browser and need to restart it to be able to post.So I won't be able to help unless you provide useful information.My experience with e-paper is only with Good Display and Waveshare 4.3 e-paper.
I will not try to open the link to your picture, it seems the site uses dubious cookies.Jean-Marc Zingg
What you seem to have is a Electronic Shelf Label.How did you get it? Is this item missing somewhere?Jean-Marc Zingg
GDEW042T2 : 4.2" 400 * 300 black/white e-Paper from Good Displayhttps://www.aliexpress.com/item/4-2-inch-SPI-E-paper-Display/32691171510.htmlI received my 2 displays and I have created my GDEW042T2 display class for use in my IoT project.My display class is a subclass of Adafruit_GFX, to have graphics and text rendering.It needs roughly 20kB available RAM to buffer the black/white image.ESP8266 or STM32 systems have just enough free RAM, e.g. Arduino Due.I used Wemos D1 mini, STM32F103RB-Nucleo, and some STMF103C8T6-mini systems.I share this display class with you, as a possible reference for your evaluation or work.However, I have too many interesting things to experiment with, and therefore can't provide support.
thank you for the support.I'll buy a e-paper and try to use with NodeMCu V3.;-)
An updated version of my e-paper display classes can be found on GitHub:https://github.com/ZinggJM/GxEPD