“Must have for a Raspberry Pi zero, and easier to use with a Raspberry Pi 3, you don't need to find the IP address when you want to connect to configure your Raspberry Pi.
Some notes:
Before putting the SD Card in your Raspberry Pi, add this line to the /boot/config.txt file:
enable_uart=1
Connect the cable using these pins:
Red: 5V
Black: GND
White: 14
Green: 15
Do not connect the 5V (red) if your Pi is using the power adapter.
Done!”
“Bought it for my Raspberry Pi.
This is all you need to tame a Raspberry Pi A+ without an ugly USB-hub.
And it even let you access recovery os in case of boot failure, and do fsck without popping the card out. (In case you ask: Login: root, Passwd: raspberry)”
