We are done with installing wiringpi; let's create a ROS package for the LED blink demo. I hope you have already created a ROS workspace on the board. For this demo, we are connecting the LED anode to the twelfth pin of the board (first pin in wiringpi). The LED cathode is connected to GND.
The following figure shows the circuit of the demo. It is applicable to RPi and Odroid.
Figure 24: Board connected to an LED
Okay! Let's make a ROS package for creating a blinking ROS node. Here is the command to create a ROS package for this demo:
$ catkin_create_pkg ros_wiring_example roscpp std_msgs
You will ...
