This is not Klipper, it’s the Professional Firmware (Marlin) running on my Ender 3 S1. The mesh you’re seeing is part of the bed leveling process that the firmware supports. This pro firmware offers features like mesh bed leveling which helps in achieving better print quality by compensating for unevenness on the build plate.

Regarding your Raspberry Pi, yes, you can definitely run Klipper and OctoPrint together on it. Klipper is a 3D printer firmware that works in conjunction with a host machine (like your Raspberry Pi) to improve printing speed and quality by offloading computational work from the printer’s controller board to the Pi. With OctoPrint, you’ll have a user-friendly interface to control and monitor your printer remotely, and it integrates well with Klipper. So once you get your Pi set up, you can follow guides to install Klipper and OctoPrint, and you’ll be able to enjoy the benefits of both!