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 Noah Lewis

Due to Amazon's policy on links to external sites, this review can't post any really useful information (like specs), but I'll try my best. With a color depth of 1 bit (black and white) and a screen resolution of 800 x 480, you can print a lot of content. The included ribbon and SPI interface board are amazing and make everything plug and play. Now this is also in the manufacturer space, so it's not a generic thing that you can plug into any old computer. You should have a rough idea of what they are and how to use them (but as a hardware novice I was able to find the information needed to get them up and running on a Raspberry Pi Pico (RP2040) within a week. From my point of view the hardest part of using this product is literally connecting it properly to the microcontroller after which it just sends commands and data to it so you have to be careful with it it looks like it comes with It comes with a protective film on the front and they suggest that if you are using it for development purposes you also reinforce the back.I did this by gluing it to a wooden clipboard to give it a hard surface to attach to it can snuggle in. The fact that this screen runs on 3.3V is great, you don't need a boost converter or additional hardware to handle most n microcontrollers or Raspberry Pi which I would like to have so that some of their more expensive displays can also be run at 3.3V (instead of the 5V many of them require). This screen supports true partial draw/update which is very nice; although it takes a little getting used to since you specify the banks to draw and update with the command instead of the raw pixels you want to change (in this case the bank is 8 pixels wide by 1). pixel height). A full screen update takes about 5 seconds, so it's not the fastest solution. It's also worth noting that they strongly recommend not leaving the display on all the time. The main loop flowchart shows powering on, initializing settings, showing content on the screen, and then shutting down, followed by a hibernation mode for the display. As long as you don't unplug the screen, you can go through a truncated reboot process where you can just resubmit the settings and draw right after. This saves some time, but the whole loading process really doesn't take long (compared to redrawing, at least). Waveshare has a website with a wiki that contains all the specs for their various displays, and they also have a github with examples of a range of embedded devices for each of their displays. I can't post direct links, but a quick web search should find them.