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[BUG] Ender 3 V2 with DACAI LCD not working with Landscape #25195
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Take a picture of the back of the LCD board so it can be positively identified. Unfortunately, it sounds like you have one of the clone LCDs that does not support the rotation function. If that is the case there's not going to be anything that can be done to get it to support landscape mode unless someone figures out how to get it into that mode. |
Also hound Creality to release details on the display! It is complete undocumented. |
I have just received the same screen and can confirm your issues. It seems like the DACAI screen doesn't implement the same exact protocol. I'll do some investigation and check back with my findings. |
I've done some poking around and compiled a proper Please flash your display with the Also, I've found a bug in MarlinUI. It's an off-by-one glitch on the border for the X Y Z coordinates on the status screen. It only appears on DACAI screens as DWIN units seem to ignore out-of-bounds coordinates and rectify them to the display viewport. Refer to this PR: 2 additional notes:
It appears that DACAI units are designed to clone the original DWIN controllers - and said cloning is incomplete. It might be that Creality initially adopted the DWIN displays when they wanted to implement a color display interface, but due to the parts shortages (or due to pricing?) they've also looked towards working with other contractors, and the easiest solution was to use display panels that are compatible enough - by that I mean they've only cloned/adapted the functionalities that their firmware uses; yes, DWIN might've had a more robust feature set, but when they used modules from other manufacturers, they've only had them clone the required firmware features that their printers actually use - in this case leaving us with some pretty bad backlight control, and the lack of display rotation. |
DWIN-based knob displays are documented. Not only are there tools to recompile asset bundles for them, but the API can be found in the Ender 3 V2 and S1 firmware repos. Marlin used that API in order to adapt the classic UI to those displays. The undocumented LCDs are the newer S1 Plus and S1 Pro touch displays (which ironically are also in 2 variants, DWIN and DACAI) - we're still waiting on a firmware source code release for these, but you should bear in mind that these units are currently pretty dreadful, offering very limited functionality compared to what you can do with a knob display (be it the E3V2 / S1 color unit or the classic 128x64 displays). |
Is there not another undocumented LCD, the one requiring the TJC_SET directory on the SD card to flash? I have one of these on a new Ender 3 S1 and as far as I can tell there's no Marlin firmware available for it that maintains the LCD functionality. |
@ben-wallis there are currently 4 known LCD of that type that look the same on the outside. The first was DWIN, well known, well documented.. Here are some images of the 4 boards |
What? They use TJC now? TJC have EVERYTHING available! It's probably best documented of them all (if you look at Nextion docs and forums) |
@ben-wallis @ellensp I stand corrected, I did not know there are other compatible units other than DACAI. Regarding VIEWE, from what I can see on the board, that looks like an STM32 clone - since the DWIN units are also seemingly based on STM32 (clones?), I wonder if those provide a 1:1 emulation of the original DWINs. Is there any firmware package available from Creality for those? I wouldn't be surprised if they used the same And yes, as @EvilGremlin said, TJC have readily available tools, they're the manufacturers of the Nextion line of displays - they won't admit it, but disassembling their binaries and looking at their releases points to exactly that. Nextion is just the EU/US market-facing entity with a 200% markup. |
This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. |
Did you test the latest
bugfix-2.1.x
code?Yes, and the problem still exists.
Bug Description
I bought an Ender 3 V2 with RET6 chip that came with a DACAI LCD screen that I believe is the same one used in the Ender 3 S1. This screen only updates by using private folder. I set
define DWIN_MARLINUI_LANDSCAPE
and it is still portrait, altough it does look offset on the progress bar.Portrait mode also results in text being overwritten by other text instead of it being cleared, so eventually it looks like a jumbled mess and unreadable. Creality UI works fine without any issues, excluding lack of support for landscape mode.
This was tested on 2.1.2, 2.1.X, and bugfix-2.1.X
Also, I don't know if it's actually called DACAI or what, I think I read that somewhere.
Bug Timeline
Present since at least 2.1.2
Expected behavior
With Landscape set : Marlin UI to be in landscape mode
With Portrait set : UI to update the text properly by not overlaying on it but instead replacing it.
Actual behavior
With Lanscape set : Marlin UI is in portrait mode with a lot of information cut off horizontally
With Portrait set : Text gets overwritten instead of replaced so eventually 0-9 are all on the same spot and makes it unreadable.
Steps to Reproduce
For Landcsape error : Flash firmware with
define DWIN_MARLINUI_LANDSCAPE
on Ender 3 V2 with newer DACAI screen.For Portrait error : Flash firmware with
define DWIN_MARLINUI_PORTRAIT
on Ender 3 V2 with newer DACAI screen.Version of Marlin Firmware
bugfix-2.1.X
Printer model
Creality Ender 3 V2
Electronics
Stock 4.2.2 RET6 board
Add-ons
No response
Bed Leveling
None
Your Slicer
None
Host Software
None
Don't forget to include
Configuration.h
andConfiguration_adv.h
.Additional information & file uploads
configuration.zip
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