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112 lines
5 KiB
Markdown
112 lines
5 KiB
Markdown
# Display update guide for Ender-3 V2 family screens
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This guide applies for all Ender-3 series printers that use a **color LCD with rotary encoder**.
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Screen updates are handled via a microSD card. In order to update, the display module needs to be opened to reveal the mainboard.
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## **Identifying your display type**
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Currently, Creality provides screen units from four different manufacturers.
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The communication between the printer and display is more or less the same (with some slight compatibility quirks), but the format of the firmware and/or graphics assets differs.
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Use the following pictures to identify your type of display unit:
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* **DWIN display**, originally shipped with Ender-3 V2
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* **DACAI display**, a DWIN clone
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Emulates the DWIN protocol but without:
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* Proper brightness control
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* Display brightness seems to have a non-linear curve, only dimming under `50` out of `255`
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* Display rotation
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* This makes it incompatible with MarlinUI in Landscape mode
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Renders TrueType fonts instead of Bitmap fonts.
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DACAI tools allow for the conversion of original `DWIN_SET` asset bundles into its own format.
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* **SYNWIT / VIEWE display** **`Currently undocumented`**, **`Reduced custom UI compatibility`**
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Emulates the DWIN protocol, but without:
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* Direct pixel blitting
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* This makes it incompatible with `gcode`-based STL previews
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There is currently no information regarding how to compile a firmware for this type of display, nor does it look like there are any official firmwares to attempt a decompilation effort.
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* **TJC display** **`Currently undocumented`**, **`Currently incompatible with custom UIs`**
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Appears to emulate the DWIN protocol but without an unknown subset of features that make it currently crash with custom firmware.
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TJC tools are readily available, but there are currently no custom display firmwares for this unit. More research is required, but it appears custom firmware should be possible.
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## **Display compatibility**
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The differences between the types of displays units shown above make them more compatible or less compatible with different types of UIs:
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* **DWIN**
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* ✅ Creality UI
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* ✅ MRiscoC Pro UI
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* ✅ JyersUI
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* ✅ MarlinUI Portrait
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* ✅ MarlinUI Landscape
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* **DACAI**
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* ✅ Creality UI
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* ✅ MRiscoC Pro UI
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* ✅ JyersUI
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* ✅ MarlinUI Portrait
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* ❌ MarlinUI Landscape
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* Lack of support for display rotation
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* **SYNWIT / VIEWE**
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* ✅ Creality UI
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* ⚠️ MRiscoC Pro UI
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* STL preview not working
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* ❔ JyersUI
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* ⚠️ MarlinUI Portrait
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* Lack of custom graphics assets compilation means no icons are visible
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* ❔ MarlinUI Landscape
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* **TJC**
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* ✅ Creality UI
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* ❌ MRiscoC Pro UI
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* As reported by author; incompatibility causes currently unknown
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* ❔ JyersUI
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* ⚠️ MarlinUI Portrait
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* Lack of custom graphics assets compilation means no icons are visible
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* ❔ MarlinUI Landscape
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## **If you've got a currently undocumented display**
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In the case of **SYNWIT / VIEWE** and **TJC** displays, currently only the Creality UI interface option (`DWIN_CREALITY_LCD`) is fully compatible.
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If you have a **DWIN** or **DACAI** display, please follow the procedure below to upgrade the firmware with the custom graphics assets required for MRiscoC Pro UI, JyersUI and MarlinUI.
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(It is worth noting that MarlinUI _will_ work on undocumented LCDs, but no icons will be displayed).
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## **Updating the Display**
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* ### `DWIN` units
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- Format a microSD card using the FAT32 filesystem with 4K cluster size
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- Decompress `DWIN_SET.tar.gz` which contains a `DWIN_SET` folder.
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- Copy the `DWIN_SET` folder to the SD card and insert the card into the slot on the back of the display unit.
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- Power on the machine and wait for the screen to change from blue to orange
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- Power off the machine
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- Remove the SD card from the back of the display
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- Power on to confirm a successful flash
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* ### `DACAI` units
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- Format a microSD card using the FAT32 filesystem with 4K cluster size
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- Decompress `private.tar.gz` which contains a `private` folder.
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- Copy the `private` folder to the SD card and insert the card into the slot on the back of the display unit.
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- Power on the machine and wait for the installation screen to finish
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- Power off the machine
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- Remove the SD card from the back of the display
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- Power on to confirm a successful flash
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If you're experiencing screen glitches, please ensure both the printer and the display unit have been flashed correctly.
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