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It works on raspbian because that has raspberry pi specific things like RPI.GPIO already installed. You will need to install that yourself on a more generic ubuntu system.

This is something that I think you will get more help from asking on the raspberry pi forums as it is a raspberry pi issue, not a ROS one. For RPI.GPIO you need device tree support enabled in ubuntu, I don't know whether it is in 13.10 - there is a post here about getting it working with ubuntu 14.04 that might help https://www.raspberrypi.org/forums/viewtopic.php?f=32&t=113014&p=773725 http://askubuntu.com/questions/621134/gpio-on-raspberry-pi

All the examples I have seen use 14.04 and upwards, and ROS support is better too. Is there a reason for using 13.10 (if that is what you have) ?

It works on raspbian because that has raspberry pi specific things like RPI.GPIO already installed. You will need to install that yourself on a more generic ubuntu system.

This is something that I think you will get more help from asking on the raspberry pi forums as it is a raspberry pi issue, not a ROS one. For RPI.GPIO you need device tree support enabled in ubuntu, I don't know whether it is in 13.10 - there is a post here about getting it working with ubuntu 14.04 that might help https://www.raspberrypi.org/forums/viewtopic.php?f=32&t=113014&p=773725 http://askubuntu.com/questions/621134/gpio-on-raspberry-pi

All the examples I have seen use 14.04 and upwards, and ROS support is better too. Is there a reason for using 13.10 (if that is what you have) ?

version 15.10 here https://ubuntu-mate.org/raspberry-pi/ comes with RPI.GPIO pre-installed

It works on raspbian because that has raspberry pi specific things like RPI.GPIO already installed. You will need to install that yourself on a more generic ubuntu system.

This is something that I think you will get more help from asking on the raspberry pi forums as it is a raspberry pi issue, not a ROS one. For RPI.GPIO you need device tree support enabled in ubuntu, I don't know whether it is in 13.10 - there is a post here about getting it working with ubuntu 14.04 that might help https://www.raspberrypi.org/forums/viewtopic.php?f=32&t=113014&p=773725 http://askubuntu.com/questions/621134/gpio-on-raspberry-pi

All the examples I have seen use 14.04 and upwards, and ROS support is better too. on 14.04. Is there a reason for using 13.10 (if that is what you have) ?

version 15.10 here https://ubuntu-mate.org/raspberry-pi/ comes with RPI.GPIO pre-installed