4.2inch e-Paper [B] (Waveshare Electronics Ltd.)

400x300, 4.2inch E-Ink raw display, three-color, SPI interface, without PCB Overview This is an E-Ink raw display, 4.2inch, 400x300 resolution, with embedded controller, communicating via SPI interface, supports red, black, and white three-color display. Due to the advantages like ultra low power consumption, wide viewing angle, clear display without electricity, it is an ideal choice for applications such as shelf label, industrial instrument, and so on. Features No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing Comes with development resources and manual (driver board schematic, examples for Raspberry Pi/Arduino/STM32) Specifications Operating voltage: 3.3V Interface: 3-wire SPI, 4-wire SPI Outline dimension: 90.1mm ? 77.0mm ? 1.18mm Display size: 84.8mm ? 63.6mm Dot pitch: 0.212 ? 0.212 Resolution: 400 ? 300 Display color: red, black, white Grey level: 2 Full refresh time: 15s Refresh power: 26.4mW(typ.) Standby power: <0.017mW Viewing angle: >170°