diff --git a/README.md b/README.md
index 04a8cb4..ea58727 100644
--- a/README.md
+++ b/README.md
@@ -6,12 +6,8 @@ This repository contains files used to setup our SBCs with a freshly installed A
 Files in this repository only cover the SBC setup.
 #### Installation
 * `setup.sh` is a script automating the installation and configuration of required software
+* `variables.conf.template` contains examples variables definitions, and should be copied locally to `variables.conf`
+  (with any required modifications).
 
 ### TODO
-* not working as of now
-* set up variables
-* add use cases
-  * SSH bouncer
-  * Printscan
-  * UPNP renderer
-  * NAS server
+* RAS
diff --git a/setup.sh b/setup.sh
index 210d3d4..4377019 100644
--- a/setup.sh
+++ b/setup.sh
@@ -3,7 +3,14 @@
 # (Keep in mind that default root password is 1234)
 # Flash SBC's SD with Armbian and clone this repository in /root
 
-# YOU SHOULD REMOVE THIS SCRIPT AFTER SETUP
+run_directory=$(dirname $(readlink -f "$0"))
+source "$run_directory/variables.conf"
+
+# Only run if the user is root
+if [[ $USER != 'root' ]]; then
+  echo "You must run this script as root!"
+  exit 1
+fi
 
 # initialization
 echo "Starting initialization"
@@ -14,11 +21,19 @@ systemctl disable apt-daily-upgrade.timer
 
 # install packages
 echo "Starting packages installation"
-sed -i -e "s/$deb_apt_default_repo/$deb_apt_repo/g" /etc/apt/sources.list
+#sed -i -e "s/$deb_apt_default_repo/$deb_apt_repo/g" /etc/apt/sources.list
 apt update
 apt upgrade -y
-# TODO define $additional-packages, depending on $use-case and $sbc
-apt install -y vim tree tmux neofetch git
+additional_packages=''
+if [[ $use_case = 'printscan-server' ]]; then
+  additional_packages+="sane sane-utils hplip apache2"
+elif [[ $use_case = 'upnp-renderer' ]]; then
+  wget -P /usr/share/keyrings/ https://www.lesbonscomptes.com/pages/lesbonscomptes.gpg
+  wget -P /etc/apt/sources.list.d/ https://www.lesbonscomptes.com/upmpdcli/pages/upmpdcli-rbullseye.list
+  sed -i -e "s/deb-src/#deb-src/g" /etc/apt/sources.list.d/upmpdcli-rbullseye.list
+  additional_packages+="mpd upmpdcli"
+fi
+apt install -y vim tree tmux neofetch git $additional_packages
 
 # add users
 echo "Adding users"
@@ -38,6 +53,11 @@ sudo -H -u $user cp $sync_directory_path/conf-sync/variables.conf.template \
 sudo -H -u $user sed -i -e "s/\"desktop\"/\"server\"/g" $sync_directory_path/conf-sync/variables.conf
 sudo -H -u $user $sync_directory_path/conf-sync/install.sh
 
+# set use case config
+echo "Getting and deploying use-case $use_case configuration"
+sudo -H -u $user git clone https://gitea.kto.black/adminconf/$use_case.git $sync_directory_path/$use_case
+# TODO how to start install? We need to define variables
+
 # SSH config
 echo "Getting SSH public key"
 sudo -H -u $user mkdir /home/$user/.ssh
@@ -48,31 +68,11 @@ sed -i -e "s/#PasswordAuthentication yes/PasswordAuthentication no/g" /etc/ssh/s
 sed -i -e "s/PermitRootLogin yes/PermitRootLogin no/g" /etc/ssh/sshd_config
 
 # specific function for orangepizero
-if [[ $default_hostname = 'orangepizero' ]]; then
+if [[ $sbc = 'orangepizero' ]]; then
   echo "Setting CPU frequency to performance"
   sed -i -e "s/GOVERNOR=ondemand/GOVERNOR=performance/g" /etc/default/cpufrequtils
 fi
 
-# Only run if the user is root
-if [[ $USER != 'root' ]] ; then
-  echo "You must run this script as root!"
-  exit 1
-fi
-
-run_directory_path=$(pwd)
-
-# Set parameters TODO replace by a variables.conf
-fqdn='pi2.jab.kto.black'
-keymap='fr'
-timezone='Europe/Paris'
-deb_apt_default_repo='deb.debian.org'
-deb_apt_repo='ftp.fr.debian.org'
-user='alex'
-sync_directory_path="/home/$user/.sync"
-systemd_units_path='/etc/systemd/system'
-remote_pubkey_location='https://keys.kto.black'
-remote_pubkey='home.pub'
-
 echo ""
 echo "We're all good here!"
 echo "You should now:"
diff --git a/variables.conf.template b/variables.conf.template
new file mode 100644
index 0000000..006ae0c
--- /dev/null
+++ b/variables.conf.template
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+# Copy this file as variables.conf, with the correct values
+
+fqdn=''
+keymap='fr'
+timezone='Europe/Paris'
+#deb_apt_default_repo='deb.debian.org'
+#deb_apt_repo='ftp.fr.debian.org'
+user='alex'
+sync_directory_path="/home/$user/.sync"
+remote_pubkey_location='https://keys.kto.black'
+remote_pubkey='home.pub'
+
+# Choose one of the following use cases:
+#use_case='upnp-renderer'
+#use_case='ssh-bounce-server'
+#use-case='printscan-server'
+#use-case='nas-server'
+
+# Choose one of the following SBC:
+#sbc='pine64'
+#sbc='orangepizero'
+#sbc='odroidhc2'