General description No backlight is required for this 2.9 Inch E-Ink Display, which can maintain the last screen display for an extended period. It features very low power consumption, primarily consuming power only during refreshes. The display utilizes an SPI control interface, making it compatible with various main control boards such as Arduino Nano and STM32. An onboard level conversion chip ensures compatibility with both 3.3V and 5V microcontroller interfaces. A complete information manual and sample programs for Arduino Nano and STM32 are provided. Technical specifications Working voltage: 3.3V/5V Communication interface: 3-wire SPI, 4-wire SPI Dimensions: 89.5 x 38 mm Display size: 66.89 x 29.05 mm Resolution: 296 x 128 pixels Display color: black and white Gray level: 2 Partial refresh time: 0.3 seconds Refresh power consumption: 26.4 mW (typical) Sleep current: less than 0.01 µA Viewing angle: 170° Material: Plastic + Metal Package Contents 1 x Display 1 x 20 cm Connection