Nexus 4 and Nexus 5 debug cable

As seen https://blog.accuvant.com/jduckandryan/building-a-nexus-4-uart-debug-cable/

I’d definitely buy a pre-made cable, with a FTDI USB to TTL (Prolific no longer works in Windows 8). The Nexus 5 variant requires 3.3V instead of 3V.