[Problem] ePaper module won't do anything

Moderators: grovkillen, Stuntteam, TD-er

Post Reply
Message
Author
Nippy
New user
Posts: 7
Joined: 12 Dec 2022, 18:26

[Problem] ePaper module won't do anything

#1 Post by Nippy » 16 Dec 2022, 22:14

Hello folks,

i am trying to connect my Waveshare ePaper display module to ESPeasy but it will not work.
Tried all kind of settings, still no function.

Switched to Arduino example code from Waveshare Website on Arduino Uno and the display works like a chram.
So the problem is anywhere in my settings, i guess.

Maybe you guys can help me :|


Here are my specs / configs:

ESPeasy Build:
ESP_Easy_mega_20221105_display_ESP32_4M316k

e-Paper Module:
- Waveshare 2.9 / v2 Rev2.1
- 296x128 Pixel

Tested ESP:
- ESP32-S
- ESP32 D1
- ESP8266

SPI setting on ePaper Module:
- 4-Wire

Info text from Waveshare Webpage:
V2 hardware and interfaces are compatible with V1
https://www.waveshare.com/wiki/2.9inch_ ... th_Arduino

ESPeasy Settings:
HARDWARE -> SPI Interface:
HSPI: CLK=GPIO-14, MISO=GPIO-12, MOSI=GPIO-13
SPI
SPI
7FwRJtzIHw.png (8.33 KiB) Viewed 1109 times

DEVICES -> Display - eInk with Lolin ePaper screen:
GPIO → EPD CS: GPIO-26
GPIO → EPD DC: GPIO-27
GPIO → EPD RST: GPIO-33
GPIO → EPD BUSY: -none-
eInk display model: Waveshare 2.7" (264 x 176px)
Devices
Devices
firefox_OWylT7GvSd.png (54.33 KiB) Viewed 1109 times

Connection Display -> ESP32:
Busy -> n.c. / when connected ESP will freeze
RST -> GPIO-33
DC -> GPIO-27
CS -> GPIO-26
CLK -> GPIO-14
DIN -> GPIO-13
GND -> GND
VCC -> 3.3v / 5v (testet both)

Tested with all display model types:
- IL3897
- UC8181D
- SSD1680
- Waveshare 2.7"

User avatar
Ath
Normal user
Posts: 3521
Joined: 10 Jun 2018, 12:06
Location: NL

Re: [Problem] ePaper module won't do anything

#2 Post by Ath » 17 Dec 2022, 21:18

Those ePaper devices have the 'habit' of using a different controller for each different display resolution. Your device is the 296x128 pixel version, where you selected the 274x176 pixel model.

I'm still thinking about a way to easily support all those different display controller models, but haven't found a solution yet :(
/Ton (PayPal.me)

Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 34 guests