pi40 Keyboard Kit: A 40% Planck-style keyboard kit with mostly through-hole soldered parts and a Raspberry Pi as its controller.

The idea of a through-hole kit is that you can solder on all the parts yourself—even the diodes and microcontroller—and it shows this off by having the diodes arranged under a window in a pretty pattern. Looks like the microcontroller board itself requires some trickier soldering since it has pads rather than pins.