diff --git a/install-bullseye.sh b/install-bullseye.sh
new file mode 100755
index 0000000..76743a9
--- /dev/null
+++ b/install-bullseye.sh
@@ -0,0 +1,254 @@
+#!/bin/bash
+CONFIG=/boot/config.txt
+DATESTAMP=`date "+%Y-%m-%d-%H-%M-%S"`
+CONFIG_BACKUP=false
+APT_HAS_UPDATED=false
+USER_HOME=/home/$SUDO_USER
+RESOURCES_TOP_DIR=$USER_HOME/Pimoroni
+WD=`pwd`
+USAGE="sudo ./install.sh (--unstable)"
+POSITIONAL_ARGS=()
+UNSTABLE=false
+PYTHON="/usr/bin/python3"
+CODENAME=`lsb_release -sc`
+
+distro_check() {
+	if [[ $CODENAME != "bullseye" ]]; then
+		printf "This installer is for Raspberry Pi OS: Bullseye only, current distro: $CODENAME\n"
+		exit 1
+	fi
+}
+
+user_check() {
+	if [ $(id -u) -ne 0 ]; then
+		printf "Script must be run as root. Try 'sudo ./install.sh'\n"
+		exit 1
+	fi
+}
+
+confirm() {
+	if [ "$FORCE" == '-y' ]; then
+		true
+	else
+		read -r -p "$1 [y/N] " response < /dev/tty
+		if [[ $response =~ ^(yes|y|Y)$ ]]; then
+			true
+		else
+			false
+		fi
+	fi
+}
+
+prompt() {
+	read -r -p "$1 [y/N] " response < /dev/tty
+	if [[ $response =~ ^(yes|y|Y)$ ]]; then
+		true
+	else
+		false
+	fi
+}
+
+success() {
+	echo -e "$(tput setaf 2)$1$(tput sgr0)"
+}
+
+inform() {
+	echo -e "$(tput setaf 6)$1$(tput sgr0)"
+}
+
+warning() {
+	echo -e "$(tput setaf 1)$1$(tput sgr0)"
+}
+
+function do_config_backup {
+	if [ ! $CONFIG_BACKUP == true ]; then
+		CONFIG_BACKUP=true
+		FILENAME="config.preinstall-$LIBRARY_NAME-$DATESTAMP.txt"
+		inform "Backing up $CONFIG to /boot/$FILENAME\n"
+		cp $CONFIG /boot/$FILENAME
+		mkdir -p $RESOURCES_TOP_DIR/config-backups/
+		cp $CONFIG $RESOURCES_TOP_DIR/config-backups/$FILENAME
+		if [ -f "$UNINSTALLER" ]; then
+			echo "cp $RESOURCES_TOP_DIR/config-backups/$FILENAME $CONFIG" >> $UNINSTALLER
+		fi
+	fi
+}
+
+function apt_pkg_install {
+	PACKAGES=()
+	PACKAGES_IN=("$@")
+	for ((i = 0; i < ${#PACKAGES_IN[@]}; i++)); do
+		PACKAGE="${PACKAGES_IN[$i]}"
+		if [ "$PACKAGE" == "" ]; then continue; fi
+		printf "Checking for $PACKAGE\n"
+		dpkg -L $PACKAGE > /dev/null 2>&1
+		if [ "$?" == "1" ]; then
+			PACKAGES+=("$PACKAGE")
+		fi
+	done
+	PACKAGES="${PACKAGES[@]}"
+	if ! [ "$PACKAGES" == "" ]; then
+		echo "Installing missing packages: $PACKAGES"
+		if [ ! $APT_HAS_UPDATED ]; then
+			apt update
+			APT_HAS_UPDATED=true
+		fi
+		apt install -y $PACKAGES
+		if [ -f "$UNINSTALLER" ]; then
+			echo "apt uninstall -y $PACKAGES"
+		fi
+	fi
+}
+
+while [[ $# -gt 0 ]]; do
+	K="$1"
+	case $K in
+	-u|--unstable)
+		UNSTABLE=true
+		shift
+		;;
+	-p|--python)
+		PYTHON=$2
+		shift
+		shift
+		;;
+	*)
+		if [[ $1 == -* ]]; then
+			printf "Unrecognised option: $1\n";
+			printf "Usage: $USAGE\n";
+			exit 1
+		fi
+		POSITIONAL_ARGS+=("$1")
+		shift
+	esac
+done
+
+distro_check
+user_check
+
+if [ ! -f "$PYTHON" ]; then
+	printf "Python path $PYTHON not found!\n"
+	exit 1
+fi
+
+PYTHON_VER=`$PYTHON --version`
+
+inform "Installing. Please wait..."
+
+$PYTHON -m pip install --upgrade configparser
+
+CONFIG_VARS=`$PYTHON - <<EOF
+from configparser import ConfigParser
+c = ConfigParser()
+c.read('library/setup.cfg')
+p = dict(c['pimoroni'])
+# Convert multi-line config entries into bash arrays
+for k in p.keys():
+    fmt = '"{}"'
+    if '\n' in p[k]:
+        p[k] = "'\n\t'".join(p[k].split('\n')[1:])
+        fmt = "('{}')"
+    p[k] = fmt.format(p[k])
+print("""
+LIBRARY_NAME="{name}"
+LIBRARY_VERSION="{version}"
+""".format(**c['metadata']))
+print("""
+PY3_DEPS={py3deps}
+PY2_DEPS={py2deps}
+SETUP_CMDS={commands}
+CONFIG_TXT={configtxt}
+""".format(**p))
+EOF`
+
+if [ $? -ne 0 ]; then
+	warning "Error parsing configuration...\n"
+	exit 1
+fi
+
+eval $CONFIG_VARS
+
+RESOURCES_DIR=$RESOURCES_TOP_DIR/$LIBRARY_NAME
+UNINSTALLER=$RESOURCES_DIR/uninstall.sh
+
+mkdir -p $RESOURCES_DIR
+
+cat << EOF > $UNINSTALLER
+printf "It's recommended you run these steps manually.\n"
+printf "If you want to run the full script, open it in\n"
+printf "an editor and remove 'exit 1' from below.\n"
+exit 1
+EOF
+
+printf "$LIBRARY_NAME $LIBRARY_VERSION Python Library: Installer\n\n"
+
+if $UNSTABLE; then
+	warning "Installing unstable library from source.\n\n"
+else
+	printf "Installing stable library from pypi.\n\n"
+fi
+
+cd library
+
+printf "Installing for $PYTHON_VER...\n"
+apt_pkg_install "${PY3_DEPS[@]}"
+if $UNSTABLE; then
+	$PYTHON setup.py install > /dev/null
+else
+	$PYTHON -m pip install --upgrade $LIBRARY_NAME
+fi
+if [ $? -eq 0 ]; then
+	success "Done!\n"
+	echo "$PYTHON -m pip uninstall $LIBRARY_NAME" >> $UNINSTALLER
+fi
+
+cd $WD
+
+for ((i = 0; i < ${#SETUP_CMDS[@]}; i++)); do
+	CMD="${SETUP_CMDS[$i]}"
+	# Attempt to catch anything that touches /boot/config.txt and trigger a backup
+	if [[ "$CMD" == *"raspi-config"* ]] || [[ "$CMD" == *"$CONFIG"* ]] || [[ "$CMD" == *"\$CONFIG"* ]]; then
+		do_config_backup
+	fi
+	eval $CMD
+done
+
+for ((i = 0; i < ${#CONFIG_TXT[@]}; i++)); do
+	CONFIG_LINE="${CONFIG_TXT[$i]}"
+	if ! [ "$CONFIG_LINE" == "" ]; then
+		do_config_backup
+		inform "Adding $CONFIG_LINE to $CONFIG\n"
+		sed -i "s/^#$CONFIG_LINE/$CONFIG_LINE/" $CONFIG
+		if ! grep -q "^$CONFIG_LINE" $CONFIG; then
+			printf "$CONFIG_LINE\n" >> $CONFIG
+		fi
+	fi
+done
+
+if [ -d "examples" ]; then
+	if confirm "Would you like to copy examples to $RESOURCES_DIR?"; then
+		inform "Copying examples to $RESOURCES_DIR"
+		cp -r examples/ $RESOURCES_DIR
+		echo "rm -r $RESOURCES_DIR" >> $UNINSTALLER
+		success "Done!"
+	fi
+fi
+
+printf "\n"
+
+if [ -f "/usr/bin/pydoc" ]; then
+	printf "Generating documentation.\n"
+	pydoc -w $LIBRARY_NAME > /dev/null
+	if [ -f "$LIBRARY_NAME.html" ]; then
+		cp $LIBRARY_NAME.html $RESOURCES_DIR/docs.html
+		rm -f $LIBRARY_NAME.html
+		inform "Documentation saved to $RESOURCES_DIR/docs.html"
+		success "Done!"
+	else
+		warning "Error: Failed to generate documentation."
+	fi
+fi
+
+success "\nAll done!"
+inform "If this is your first time installing you should reboot for hardware changes to take effect.\n"
+inform "Find uninstall steps in $UNINSTALLER\n"
diff --git a/install.sh b/install.sh
index 9d5a90f..fb441e3 100755
--- a/install.sh
+++ b/install.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 CONFIG=/boot/config.txt
-DATESTAMP=`date "+%Y-%M-%d-%H-%M-%S"`
+DATESTAMP=`date "+%Y-%m-%d-%H-%M-%S"`
 CONFIG_BACKUP=false
 APT_HAS_UPDATED=false
 USER_HOME=/home/$SUDO_USER
@@ -10,7 +10,12 @@ WD=`pwd`
 USAGE="sudo ./install.sh (--unstable)"
 POSITIONAL_ARGS=()
 UNSTABLE=false
-PYTHON3=`which python3`
+CODENAME=`lsb_release -sc`
+
+if [[ $CODENAME == "bullseye" ]]; then
+	bash ./install-bullseye.sh
+	exit $?
+fi
 
 user_check() {
 	if [ $(id -u) -ne 0 ]; then
@@ -136,7 +141,6 @@ PY3_DEPS={py3deps}
 PY2_DEPS={py2deps}
 SETUP_CMDS={commands}
 CONFIG_TXT={configtxt}
-PY3_ONLY={py3only}
 """.format(**p))
 EOF`
 
@@ -169,21 +173,7 @@ fi
 
 cd library
 
-if ! $PY3_ONLY; then
-	printf "Installing for Python 2..\n"
-	apt_pkg_install "${PY2_DEPS[@]}"
-	if $UNSTABLE; then
-		python setup.py install > /dev/null
-	else
-		pip install --upgrade $LIBRARY_NAME
-	fi
-	if [ $? -eq 0 ]; then
-		success "Done!\n"
-		echo "pip uninstall $LIBRARY_NAME" >> $UNINSTALLER
-	fi
-fi
-
-if [ -f "$PYTHON3" ]; then
+if [ -f "/usr/bin/python3" ]; then
 	printf "Installing for Python 3..\n"
 	apt_pkg_install "${PY3_DEPS[@]}"
 	if $UNSTABLE; then
@@ -196,10 +186,8 @@ if [ -f "$PYTHON3" ]; then
 		echo "pip3 uninstall $LIBRARY_NAME" >> $UNINSTALLER
 	fi
 else
-	if $PY3_ONLY; then
-		warning "Python 3 is required to install this library...\n"
-		exit 1
-	fi
+	printf "Could not find /usr/bin/python3, unable to install"
+	exit 1
 fi
 
 cd $WD
@@ -236,8 +224,6 @@ fi
 
 printf "\n"
 
-cd library
-
 if [ -f "/usr/bin/pydoc" ]; then
 	printf "Generating documentation.\n"
 	pydoc -w $LIBRARY_NAME > /dev/null