Topic created by Jean-Marc Zingg Hi E-Paper Fans Waveshare has extended their range of small e-papers with SPI interface. These e-paper displays are quite easy to use, and Waveshare has wiki pages for them with complete information, schematics, pdf specification, and code example. Be aware of th…

Post created by Jean-Marc Zingg Version 1.5.2 of library GxEPD2 is available, install or update with Library Manager. added support for Waveshare 4.37" 4-color e-paper display 512x368 fixed __has_include test (for packages that don't support __has_include) added WIDTH_VISIBLE for correct graphics…

After doing more tests I still run into issues. Maybe it's not a good idea to refresh the display too often? How often does your endurance test refresh the screen?

roamingthings: Thanks! I will take a look at it next weekend. How about dependency to Adafruit Gfx? Yes, I forgot the dependency on Adafruit_GFX. But it might well be a standard C++ class, you could try. How often does your endurance test refresh the screen? You can look this up in the Part…

Maybe I really put too much stress on the display. I have no idea how often it is fine to do a full refresh. This is how the display looks like after I had very short cycles before. I need to unplug the power and leave it there for some time before it will work again. Display Content

Hi ZinggJM, I saw that you managed to connect the 4.2 inch EPD from waveshare to a Lolin32 Lite board here: https://forum.arduino.cc/index.php?topic=487007.msg3460656#msg3460656 My Lolin 32 Lite just arrived, but I have trouble finding any information on which pins are used to drive the waveshare …

Hi Fyery, You can find the pin mapping for LOLIN32 in GxEPD_SPI_TestExample.ino: // mapping suggestion for ESP32, e.g. LOLIN32, see .../variants/.../pins_arduino.h for your board // NOTE: there are variants with different pins for SPI ! CHECK SPI PINS OF YOUR BOARD // BUSY -> 4, RST -> 16, DC -> …

Hi ZinggJM, I'm interested in using the Waveshare 7.5" e-ink display for my smart home and found your library and this thread. Many thanks for your work, highly appreciated. Is the 7.5" version of the display already supported or could it be easily added? Best regards Charly

Hi Charly, The 7.5" black/white e-paper display is fully supported, except it has no fast partial update (yet). This is the display I use for my IoT sensor values, for temperature and humidity. The 7.5" black/white/red e-paper display has basic support. I had merged it from a contributor, but I d…

Hi Jean-Marc, many thanks for your fast reply! It's working wit a Huzzah Feather and about to be connected via MQTT to my openHAB. If helpful I could share my code as well. Best regards Charly!

Hi ZinggJM, thanks to your help a week ago, I got the Waveshare 4.2" e-paper display working with my Lolin32 Lite board and your GxEPD library. Just wanted to give you some feedback and thank you again for your effort. It's greatly appreciated! To add a little sugar on top, I've included a pictur…

Waveshare e-paper displays with SPI

Other Hardware Displays

ZinggJM November 19, 2017, 9:02am 232

I have updated the Arduino e-paper library GxEPD with support for multiple e-paper displays on one Arduino (with enough RAM, e.g. ESP32).

E-paper: GxEPD2 library, multidisplay with multiplexer

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Waveshare e-paper displays with SPI

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