faq.md

Frequently Asked Questions (FAQ)

Contents:

• Remind me of that command again...
• Troubleshooting :-(
• Control algorithm hints

Remind me of that command again...

This section contains those Frequently Asked Questions that pertain to "those commands" that are regularly used to interact with the D-FaLL-System and bring your control algorithms to life through a Crazyflie quadrotor.

How do I to get a clean version of the repository?

Step 1) Change to the directory where you have a copy of the D-FaLL-System repository under version control. On a machine setup as per the instructions this is:

cd ~/work/D-FaLL-System

Step 2) It is good practice always check the status of the git repository:

git status

Step 3) Remove all changes on the current branch since the previous pull

git checkout .

Step 4) Switch to the master branch of the repository

git checkout master

Step 5) Update to the latest version of the master branch from the remote repository

git pull

How do I launch the Student GUI?

The Student GUI can be launched from a terminal window with the following command:

roslaunch d_fall_pps Student.launch

This can be run from any directory because d_fall_pps is defined as an environment variable that points to the absolute foler location ~/work/D-FaLL-System/pps_ws/src/d_fall_pps/launch/