With the recent teardown of the Raspberry Pi 500, there were immediately questions raised about the unpopulated M.2 pad and related traces hiding inside. As it turns out, with the right parts and a… ...

[Jeff Geerling] has subjected a Raspberry Pi 5 to a medical imager, and shares with us the many layers of parts and PCB he found there. With a six-layer board and a heap of large BGA chips on it ...