Challenge: Allwinner D1 put JTAG pins on the SD card socket, so I went searching for a “SD card breakout” and all I could find was a $30 PCB from Sparkfun (excluding shipping). No thanks!
Solution: use $5 free credit from #pcbway and get 5 of them made.
And it took less than 5 days to manufacture and ship.
Now that’s DIY!
(Anyone want one? I only need 1!)