external quantum efficiency

@th I have personal knowledge of an embedded system that uses a mini-HDMI connector to expose USB and 3v3uart signals as a debug interface.

Then there was the wearable that put stm32 SWD signals on the data pins of the micro USB charging port...

@adamgreenfield I'm curious what you think in the end! I had a lot of respect for Brand for a long time, but with the stuff he's done in the last decade I think I am done.

@alvaro folks at work use loctite 352.