ROS installation errors and solutions

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Q1. The following packages have unmet dependencies: ros-kinetic-desktop-full : Depends: ros-kinetic-desktop but it is not going to be installed Depends: ros-kinetic-perception but it is not going to be installed Depends: ros-kinetic-simulators but it is not going to be installed Depends: ros-kinetic-urdf-tutorial but it is not going to be installed E: Unable to correct problems, you have held broken packages.

Solution: Reset system setting (Software Updater)
  1. sudo rm /etc/apt/sources.list
  2. sudo software-properties-gtk
  3. Pick your options (Choose all options of Download from the internet, Download from Main server, Other software: delete "duplicates" as following picture)
  4. Close and reload (upgrade)

Reference: https://askubuntu.com/questions/760896/how-can-i-fix-apt-error-w-target-packages-is-configured-multiple-times, https://blog.csdn.net/xiangxianghehe/article/details/78483799

Q2. binary-arm64/Packages 404 Not Found

Solution:
  1. apt-get remove .*:arm64 
  2. dpkg --remove-architecture arm64 
Reference: https://blog.csdn.net/qq_29573053/article/details/71515714

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Tuing PID parameters in QGroundcontrol (2)

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Useful PX4 Parameters

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