Code Explanation

Overall Explanation

  • With our follow along examples, we were able to move our robot arm with precision as well as produce music with our integrated speaker within the zetabot.

  • The instructional codes have been compile into a jupyter notebook for the ease of use.

  • This section will explain the libraries used for the follow along section.

Sound

  • For our dancing robot demonstration, we published an array of integer to ROS Topic called /play_specific.

os.system('rostopic pub -1 /play_specific std_msgs/String "data: \'/root/scripts/sensor/arm_sounds/music_1.mp3\'"')

  • The play_specific topic publishes messages to the play_sound node. You can play a sound file by entering the absolute path of the sound file.

os.system('rostopic pub -1 /play_specific std_msgs/String "data: \'stop\'"')

  • Or you can stop the currently playing music with the stop command.

!ls /root/scripts/sensor/arm_sounds

  • The list of music files that can be played can be checked with the following command.