Review on Waveshare 7.5inch E-Ink Display HAT for Raspberry Pi – 800×480 Resolution, Embedded Controller, SPI Interface, Support for Raspberry Pi Series Boards and Jetson Nano by George Miller

Waveshare 7.5" E-Ink HAT Display for Raspberry Pi 640 x 384 Black & White Dual Color SPI Screen No Backlight Ultra Low Consumption Current user of a 7.5" screen. Screen refresh is adequate, but the entire screen flashes when it's on (usually 2 alternating black and white). It might be possible to implement a partial screen refresh, but I've had no luck with that (or with obtaining one). the fastest source code to use, probably due to the direct memory access of the GPIO device /dev/mem. Usually the screen responds within the first few seconds as soon as I launch my executable. WiringPi: As soon as I start an executable, there is usually a noticeable delay of several seconds before the screen responds. Still fast, but not as fast as the original BCM2835 based code. Python: The Python source code is by far the slowest with an extremely noticeable lag before the screen responds. The only time I've seen Python run fast on an e-ink display was with smaller, less intense displays. The screen is great, if you don't mind the flashing update, I'll update later if I find a way to implement a partial update or if the manufacturer notifies me of new source code that implements this feature.