Ink screen universal driver board, supports common SPI ink screen Ink screen universal driver board, supports common SPI ink screen

There are two FPC sockets, 24pin and 34pin. Some 24pin screens with wider FPC interfaces (such as the 1.54 from the old X and the 2.13 2.9 with a price tag) 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

Actual test screen

• 1.54 three colors (old screen 34p wide fpc/new screen 24p wide fpc)
• 2.13 two-color (salted fish price tag screen 34p wide fpc)/three colors
• 2.9 two-color (Laowang price tag screen)/three colors
• 4.2 Two-color/Three-color
• 7.5 three colors

The components of the driver board were removed from the price tag. There is no button, so the two switches are directly short-circuited. One BS is directly connected to the ground, and one resistor is directly connected to 0.47 ohms. According to the actual measurement, there is no problem with lighting, but the display effect may be different.

1.54 Lao Wangping is probably suffering from lung fever.

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1.54 new effect is different

2.13 price tag screen 34p magic modified to 16 levels of grayscale

2.13 three-color screen

2.9 Lao Wang’s overturned price tag screen (the fpc is from WF, Hink’s is overturned) Magic modified 16 gray

2.9 three-color screen

4.2 1688 screen (the quality is average, the inventory has aged too long) magic modification 16 gray

4.2 Three-color screen

7.5 three-color screen magic modified to 16 gray