Even better, there is an example of using the library for your own purposes. As you might expect, though, someone has reverse-engineered the protocol, and there is Python software that will replace the stock Windows software the devices use. Two of the main makers of these screens are Turing and XuanFang, although you rarely see those names in the online listings. Like a lot of this cheap stuff, these screens are sold under a variety of names, and apparently, there are some subtle differences. But how to drive it? Turns out, it is easier than you think and the hardware looks reasonably hackable, too. But a 3.5-inch IPS LCD screen for $15 or less probably has some other uses. I don’t run Windows, and if I did, I wouldn’t be keen to put some strange service on just so I could see tiny displays of my system information. Of course, this requires sketchy Windows software. A business-card-sized LCD hooks up via USB and shows your CPU speed, temperature, and so on. Ostensibly, these are being sold as system monitors. That’s the case with the glut of “smart displays” you can find at very low prices. Other times, you see things and wonder who is buying them and why - a shrimp pillow? But sometimes, you see something that probably could have a more useful purpose than the proposed use case. Sometimes, you see things at ridiculously low prices. Browsing the Asian marketplaces online is always an experience.
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