Raspberry Pi Touchscreen Setups: 7” vs 3.5” The question then becomes what style of screen to use, and exactly how well do these devices work? Read on to see my thoughts on the 3.5” and 7” touchscreen, and how they were set up. Obviously, you’re neglecting some functionality, but there may still be times where it’s useful to jab at the screen, and the extra interface could be considered a bonus. Additionally, if you wanted to use either screen as a small display with an external keyboard and mouse, this is an entirely workable situation. This leaves using a touchscreen as a kiosk, whether for home automation or in an actual public setting, where people can tap on a song to play, swipe to adjust temperature settings, and more. General touch input-especially when using a virtual keyboard-might be workable with a much larger screen, but is clunky on the 7” screen, and even more unwieldy on the 3.5” model. My reasoning is that the Raspberry Pi OS is not primarily optimized for a touch screen input, and either screen makes the setup much too thick to compare to purpose-built tablets. So, where does the Pi fall in the spectrum of these uses? After trying out both the official 7” touch screen, as well as a smaller 3.5” screen from Adafruit, it seems that the optimal use here is in a kiosk-style implementation. Kiosk: system is optimized for touchscreen input of a very limited amount of information, can take a variety of form factors. ![]() General computing: systems adapted for use with touch, but that aren’t natively optimized.Smartphone and iPad/tablet: apps and systems that are well optimized for heavy touch input.What about using a touch screen as an input method? Generally speaking, I see this kind of input falling into three different categories:
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