OK, I haven't researched this to any extent at all but what is the benefit of using a Raspberry Pi on your 3D printer? I see there is a new Pi 4 out now. I have the latest version of the Pi 3 in a RasPad touchscreen pad. I'm too blind to use the 10" pad so it sits on the shelf virtually unused. If I can put the Pi 3 to use on the printer then why not? For now I'm using a very capable Dell Laptop with Windows 10 Pro, an i5 processor and 16gb ram when I interface with the Ender 3. Pronterface is giving me com port fits yet again for absolutely NO reason and if I can use the Pi to get around that then I'm all in. I'd love to see links to what is involved.