A ROS and Gazebo Parrot Drone altitude control simulation based on Action client-server communication.
For simulation:\ roslaunch ardrone_altitude ardrone_altitude_server.launch\ roslaunch ardrone_altitude ardrone_altitude_client.launch
After doing this just write in "" your UP or down in client.\ I meant this: "UP", "DOWN"\ For finishing the fight:\ rostopic pub /drone/land std_msgs/Empty "{}"