This library contains a driver for E-Paper Modules from Waveshare.
Support for more than the 4.2in EPD (especially the smaller and faster ones) is in the work.
The 2.9in (A) and 1.54 (A) variant should both work but aren't tested yet.
| Device (with Link) | Colors | Flexible Display | Partial Refresh | Supported | Tested | | :---: | --- | :---: | :---: | :---: | :---: | | 4.2 Inch B/W (A) | Black, White | ✕ | Not officially [1] | ✔ | ✔ | | 1.54 Inch B/W (A) | Black, White | ✕ | ✔ | ✔ | | | 2.13 Inch B/W (A) | Black, White | ✕ | ✔ | | | | 2.9 Inch B/W (A) | Black, White | ✕ | ✔ | ✔ | |
Out of the Box the original driver from Waveshare only supports full updates.
| Interface | Description | | :---: | :--- | | VCC | 3.3V | | GND | GND | | DIN | SPI MOSI | | CLK | SPI SCK | | CS | SPI chip select (Low active) | | DC | Data/Command control pin (High for data, and low for command) | | RST | External reset pin (Low for reset) | | BUSY | Busy state output pin (Low for busy) |
There are two types of Display Configurations used in Wavedshare EPDs, which also needs to be set on the "new" E-Paper Driver HAT. They are also called A and B, but you shouldn't get confused and mix it with the Type A,B,C and D of the various Displays, which just describe different types (colored variants) or new versions. In the Display Config the seperation is most likely due to included fast partial refresh of the displays. In a Tabular form:
| Type A | Tybe B | | :---: | :---: | | 1.54in (A) | 1.54in (B) | | 2.13in (A) | 1.54in (C) | | 2.13in (D) | 2.13in (B) | | 2.9in (A) | 2.13in (C) | | | 2.7in (A) | | | 2.7in (B) | | | 2.9in (B) | | | 2.9in (C) | | | 4.2in (A) | | | 4.2in (B) | | | 4.2in (C) | | | 7.5in (A) | | | 7.5in (B) | | | 7.5in (C) |
Supports: - Lines - Squares - Circles - Pixels - Chars - Strings
Chars and Strings work with a 8x8-Font.
Support for bigger sized/independent Fonts is in work.
There is an example for Raspberry Pi in the example folder.