Dr. Scott M. Baker published a new build:
This started when one of my raspberry pi projects failed due to voltage drop on the USB power cable that I was using, so I set out with my power supply and DC Load to measure the voltage drop of various cables that I use in my lab
More details on his blog here.
Check out the video after the break.
So it’s 6.5ohm on the dud cable, far worse than any common wire. Probably a bad soldering job, ha ha. The rest are okay, not gloriously good, but may surprise USB users not familiar with the voltage drop specs. The power switch is a concern, I’ve had experience with cheapo switches becoming unreliable after months.