Raspberry Pi2 Serial-to-USB Connection on Linux

Raspi2 Serial In order to connect the raspberry pi 2 to a PC running Linux one must first obtain a "USB-to-TTL" Serial Debugging cable; certain precautions need to be made when selecting the appropriate cable: it should use 3.3V logic levels to avoid frying your board Since GPIO headers are not adjacent, it should have separated cables for each pin https://www.raspberrypi.org/documentation/usage/gpio-plus-and-raspi2/README.md http://elinux.org/RPi_Serial_Connection