Open Source DIY Huawei Nova14 Color Display Phone Case 3.98-inch Four-Color E-Ink Screen - Open Source Adaptation InkSight Firmware Tutorial

Huawei Color Display Phone Case 3.98-inch Four-Color Screen - Tested

 

Two print profiles: one adapted for the screen only, one including the original screen circuit board;

20260501: Optimized the front case screen size for the screen-only adaptation version, increased by about 0.4mm, as the screen was too tight previously.

Source code update: Knowledge shared via cloud drive: Link: https://pan.baidu.com/s/5Orla0x7rrl81lcOOuw8KgQ? Copy this content and open the Baidu Netdisk mobile App for more convenient operation

A colorful display phone case for Huawei Nova was recently sold on Xianyu, originally priced at 299, but selling for around 20, with some going for as low as a dozen yuan. The back of the case features a high-resolution four-color e-ink screen with excellent display effects (resolution 768×552, 3.98 inches)! Friends, light it up, upload pictures, etc.!!

Coincidentally, while browsing Xianyu, I found one for 9.9 with free shipping. I disassembled the screen, designed a case, and am now waiting for experts to adapt the calendar and upload pictures!

If you think the model is good, please give it a like. The charging module is adapted for the 5-cent module sold on Xianyu (not compatible with the InkSight project).

New model adapting to InkSight (using ESP32 S2 mini -PSRAM development board) is being optimized, with effects shown below:

InkSight Project Flashing Tutorial:

    The Huawei Nova14 color display phone case, with A0 version four-color screen and A1 version four-color screen, will have different drivers for the two screen versions; I got a pro-A0 version for 9.9 (the open-source firmware below is based on this screen version; the A1 version has not been tested as I don't have it, you can research it yourself), and paid to adapt the driver with AI, basically making it compatible with the InkSight project, shared as follows:

I. Buying materials on Xianyu: Huawei Nova 14 Pro/Ulta color display phone case, officially priced at 299 yuan, currently around 20 yuan, and may further increase in price recently due to enthusiasts. As shown below:

II. Disassembly:
Basically, first heat the outer casing, use a knife or card to insert into the gaps around it, combine with alcohol, etc., to remove the outer glass (be careful not to break the four-color e-ink screen, it costs tens of yuan), and then remove the e-ink screen. In short, be careful with everything. My disassembly diagram is as follows; everyone has a different method of disassembly, so follow your own:

III. Driving the e-ink screen:
1. Remove the chip from the original circuit board: Remove the chip at the position shown in the figure:

2. Wiring the original circuit board to the development board:
  The original circuit board conveniently has pin points, so simply use flying wires to connect to the development board: Connect the points indicated in the figure below to the corresponding pins on the development board.

3. Firmware flashing:
I have adapted the ESP32 S2 mini development board, and after spending tens of yuan for AI burning, debugging was basically successful. The firmware is shared with everyone; the source code is incomplete so it will not be shared (please understand).
Firmware address: File shared via cloud drive:
Link: https://pan.baidu.com/s/1kjh1uDEKJZGgSypFIHWR_Q?pwd=schv Extraction code: schv Copy this content and open the Baidu Netdisk mobile App for more convenient operation

Wiring is as follows:
#elif defined(BOARD_PROFILE_ESP32_S2_MINI)
#define PIN_EPD_MOSI   11
#define PIN_EPD_SCK    7
#define PIN_EPD_CS     12
#define PIN_EPD_DC     17
#define PIN_EPD_RST    16
#define PIN_EPD_BUSY   4
#define PIN_BAT_ADC    6
#define PIN_CFG_BTN    0

 

4. For network configuration, please refer to the specific introduction of the InkSight project. The effect is as follows: