root@strawberry

pins located at: /sys/class/gpio

Initialize/Remove a gpio connection:

• echo <pin number> into “/sys/class/gpio/export” to create a gpio connection with pin <pin number>.
• echo <pin number> into “/sys/class/gpio/unexport” to remove an existing connection

Using a gpio connection:

• echo (“in”|“out”) into “/sys/class/gpio/gpio<pin number>/direction” to specify the mode of writing or reading.
• echo (“1”|“0”) into “/sys/class/gpio/gpio<pin number>/value” to turn (on|off) a port

• Raspberry Pi + Arduino, GPIO test light blink

• arduino hookup

• rasberry hookup

SoftwareSerial to ttyAMA0. Here is the code.

• Raspberry Pi

• Arduino

Code for the Servo and Sensor is here.

• serial connection: http://elinux.org/RPi_Serial_Connection
• RPi gpio chart: http://elinux.org/RPi_Low-level_peripherals#GPIO_hardware_hacking
• ICSP (+other digital charts for Leonardo):http://www.instructables.com/id/Step-by-Step-Guide-to-the-Arduino-Leonardo/
• SPI R/W from arduino (UNO, in depth) http://www.gammon.com.au/forum/?id=10892
• ICSP (explanation, more general) http://tronixstuff.com/2011/05/13/tutorial-arduino-and-the-spi-bus/

http://www.irobot.com/hrd_right_rail/create_rr/create_fam/createFam_rr_manuals.html

https://github.com/mgobryan/pycreate

Working on this –> https://github.com/neofu50/python-irobot-create