Waveshare 4inch E Ink Spectra 6 (E6) Full Color E-Paper Display, Compatible with Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, Jetson Nano and RDK X3, with HAT+ Standard Driver Board

Previously had a good experience with Waveshare products, unfortunately not this one. This screen is advertised as a "Full Color" display, but it's actually a 6-color display, as in it only displays 6 colors as defined in their firmware:#define EPD_4IN0E_BLACK 0x0 /// 000#define EPD_4IN0E_WHITE 0x1 /// 001#define EPD_4IN0E_YELLOW 0x2 /// 010#define EPD_4IN0E_RED 0x3 /// 011#define EPD_4IN0E_BLUE 0x5 /// 101#define EPD_4IN0E_GREEN 0x6 /// 110Don't be fooled by the "Spectra" branding, this looks nothing like the demos of full-color Spectra 6 eink displays.

I got one of these directly from Waveshare and have two more on order. Planning on ordering an additional four. I have it displaying a custom informational screen that gets updated every ten minutes. It works well and the colors are nice. My only complaint is the update time. I'm using their sample python code to do the clear and update and it takes about 50 seconds. And that is 50 seconds of the display flashing random colors or blank, it is unreadable during most of that time. The C sample code had about the same time.