Hello,

I am new to ROS and want to understand how to do something as simple as programming an LED to blink. I am using a Raspberry Pi 3 with ubuntu mate and kinetic installed. I have experience in coding and have coded the blinking LED in raspbian fairly easily, but I am clueless where to start in ROS. I'm not sure how to access the GPIO or where to start with the program. Any help will be greatly appreciated. Thanks!