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400x300, 4.2inch E-Ink display module(B), red/black/white three-color, SPI interface.
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 → SPI interface, for connecting with controller boards like Raspberry Pi/Arduino/Nucleo, etc. → Onboard voltage translator, compatible with 3.3V/5V MCUs → Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)
Technical Specs
→ Operating voltage: 3.3V~5V → Interface: 3-wire SPI, 4-wire SPI → Outline dimension: 103.0mm × 78.5mm → Display size: 84.8mm × 63.6mm → Dot pitch: 0.212 × 0.212 → Resolution: 400 × 300 → Display color: yellow, black, white → Grey level: 2 → Full refresh time: 15s → Refresh power: 26.4mW(typ.) → Standby power: <0.017mW → Viewing angle: >170°
Resources
www.waveshare.com/wiki/4.2inch_e-Paper_Module_(B)