SERIAL CONSOLE FOR RASPBERRY PI
The Board has two jumper positions:
When in “DBG” the communication link connects a computer (PC /Mac / Linux) to the Sleepy Pi. This is the standard programming mode and allows you to program and debug Arduino code on the Sleepy Pi.
When in “TERM” the communication link is from the computer to the Raspberry Pi. In this configuration the you can log into the Raspberry Pi via the serial terminal.
PC / Mac / Linux compatible
USB – plugs into your computers USB port
Speed up your development
Debug even when you RPi is off
Standalone – run you Sleepy Pi all on it’s lonesome – no Raspberry Pi needed
Serial Console – Access the Linux Console over s serial link
Programming and Serial Console PCB
Programming from the Arduino IDE
Programming the Sleepy Pi as a Standalone Board
Cable Drivers from here