RPI Model : 3B OS: Ubuntu 20.04

Setup SSH

sudo nano /etc/ssh/sshd_config

in the file make following changes

PublicAuthentication yes
PasswordAuthentication no
ChallengeResponseAuthentication yes

After this, run following two commands

sudo systemctl enable ssh
sudo systemctl restart sshd

Installing ROS

1. Setup Ubuntu Repo

sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository universe

1. Add the ROS repository to your sources list:

sudo sh -c 'echo "deb <http://packages.ros.org/ros/ubuntu> $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'

1. Add the ROS keys:

sudo apt install curl
curl -s <https://raw.githubusercontent.com/ros/rosdistro/master/ros.asc> | sudo apt-key add -

1. Update Package Index

sudo apt update

1. Install Ros Noetic Base (for MAVROS)