1.54-inch ink screen circuit and driver purchased by Lichuang overseas

Both hardware and software come from open source projects. The information on the ink screen on the Internet is diverse and somewhat confusing. This should be a relatively clear and easy-to-understand hardware and driver. See the attachment for the driver.

Things to note are:
1. When purchasing hardware, please note that the 24p FPC seat is connected from the top, not from the bottom.

2. When connecting the hardware, connect the RST of the driver board to the RST of the 8266

Other connections are as follows:
Board pin 8266 pin
3.3V ———— 3v3
GND ———— GND
 DC_PIN ———— 4
CS_PIN ———— 15
 BUSY ———— 5
 CLK ———— 14
 SDI — ——— 13

3. The Arduino json library used by the program is version 5. You need to change the library management in Arduino to the old version.
   To know the weather, you need to register your own account to obtain the key information.

4. During debugging, if the 3-wire mode fails, change to the 4-wire mode, and vice versa.

The 2 switches are mainly responsible for color, black and white, and 3-wire or 4-wire mode.

For high-definition demonstration video, please see: Bilibili Demonstration Page

Hardware source: https://oshwhub.com/ludas/mo-shui-ping-qu-dong

Ink screen universal driver board, supports common SPI ink Ink screen universal driver board, supports common SPI ink screen
has two fpc sockets, 24pin and 34pin, some 24pin but wider fpc interface screen (such as the old X's 1.54 and price tag Disassembled 2.13 2.9) can be used directly without trimming the FPC

The two switches are used to select spi mode (3-wire/4-wire) and drive resistance (see the table below for details)

Note: The e-paper with brackets (B/C) after it is usually a three-color screen; the one without brackets is usually a two-color screen.

Hardware source: https://oshwhub.com/ludas/mo-shui-ping-qu-dong

Ink screen universal driver board, supports common SPI ink Ink screen universal driver board, supports common SPI ink screen
has two fpc sockets, 24pin and 34pin, some 24pin but wider fpc interface screen (such as the old X's 1.54 and price tag Disassembled 2.13 2.9) can be used directly without trimming the FPC

The two switches are used to select spi mode (3-wire/4-wire) and drive resistance (see the table below for details)

Note: The e-paper with brackets (B/C) after it is usually a three-color screen; the one without brackets is usually a two-color screen.

Reference source https://hackaday.io/project/164772-e-ink-adapter

The measured screen is
1.54 three-color (Laowang screen 34p wide fpc/new screen 24p wide fpc)
2.13 two-color (salted fish price tag screen 34p wide fpc) / three-color
2.9 two-color (Laowang price tag screen) / three-color
4.2 two-color / three-color Color
7.5 three colors