2.9 inch touch e-Paper HAT 2.9inch Touch E-Paper Display HAT for Raspberry Pi A 296 × 128 black-and-white touch e-paper HAT with 5-point capacitive touch, SPI display interface, I2C touch interface, Raspberry Pi 40PIN GPIO header, and ultra-low power paper-like display. Key Features 2.9 inch e-paper panel with 296 × 128 resolution. Black and white display with 4 grey scales in full refresh mode. 5-point capacitive touch with toughened glass touch panel. Supports user-defined wake-up gesture. Standard Raspberry Pi 40PIN GPIO header for Raspberry Pi series boards. SPI interface for the display and I2C interface for the touch panel. Partial refresh support, with about 0.6s partial refresh time. No backlight required; content remains visible after power is removed. Specifications Operating voltage 3.3V / 5V Display color Black / White Display interface 3-wire SPI / 4-wire SPI Touch interface I2C Touch points 5 Grey scale 4 in full refresh mode Resolution 296 × 128 pixels Display size 66.89 × 29.05mm Outline dimensions 89.10 × 42.70mm Full refresh time 3s Partial refresh time 0.6s Refresh power 26.4mW typ. Dot pitch 0.227 × 0.226mm Standby current