diff --git a/tools/rc23/build-rc.sh b/tools/rc23/build-rc.sh
new file mode 100755
index 000000000..e3012b298
--- /dev/null
+++ b/tools/rc23/build-rc.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+
+set -e
+
+branch=2.3.0
+docker=rc23
+workdir=/home/opentx/rc23
+output=/var/www/html/2.3/rc
+version=2.3.0
+
+# Increment RC index
+index=`cat index.txt`
+index=`expr $index + 1`
+suffix="RC$index"
+
+cd ${workdir}
+
+# Create on-demand build environment
+cp code/radio/util/Dockerfile .
+docker build -t new-${docker} --build-arg OPENTX_VERSION_SUFFIX=${suffix} .
+set +e
+docker rmi -f ${docker}
+set -e
+docker tag new-${docker} ${docker}
+docker rmi -f new-${docker}
+
+# Call sdcard generation
+code/tools/rc23/build-sdcard.sh
+
+# Build Linux companion
+docker run -dit --name companion -v /home/opentx/${docker}:/opentx ${docker}
+docker exec companion sh -c "mkdir -p build && cd build && cmake /opentx/code && cp radio/src/stamp.h /opentx/binaries/stamp-opentx.txt"
+docker exec companion rm -rf build
+if [ ! -f ${output}/companion/linux/companion23_${version}${suffix}_amd64.deb ]; then
+  docker exec companion /opentx/code/tools/build-companion-release.sh /opentx/code /opentx/binaries/
+  docker exec companion sh -c "cp /build/radio/src/lua/*.txt /opentx/binaries"
+  cp -f binaries/*.deb ${output}/companion/linux/companion23_${version}${suffix}_amd64.deb
+  cp -f binaries/lua_fields_*.txt ${output}/firmware
+fi
+docker stop companion
+docker rm companion
+
+# Request companion compilation on Windows
+if [ ! -f ${output}/companion/windows/companion-windows-${version}${suffix}.exe ]; then
+  cd ${output}/companion/windows
+  wget -qO- http://winbox.open-tx.org/companion-builds/compile23.php?branch=$branch\&suffix=${suffix}
+  wget -O companion-windows-${version}${suffix}.exe http://winbox.open-tx.org/companion-builds/companion-windows-${version}${suffix}.exe
+  chmod -Rf g+w companion-windows-${version}${suffix}.exe
+fi
+
+# Request companion compilation on Mac OS X
+if [ ! -f ${output}/companion/macosx/opentx-companion-${version}${suffix}.dmg ]; then
+  cd ${output}/companion/macosx
+  wget -qO- http://opentx.blinkt.de:8080/~opentx/build-opentx.py?branch=${branch}\&suffix=${suffix}
+  wget -O opentx-companion-${version}${suffix}.dmg http://opentx.blinkt.de:8080/~opentx/builds/opentx-companion-${version}${suffix}.dmg
+  chmod -Rf g+w opentx-companion-${version}${suffix}.dmg
+fi
+
+# Update stamps
+cp -f  $workdir/binaries/stamp-opentx.txt ${output}/firmware
+echo "#define VERSION  \"${version}${suffix}\"" > ${output}/companion/companion-windows.stamp
+cp -f ${output}/companion/companion-windows.stamp ${output}/companion/companion-macosx.stamp
+cp -f ${output}/companion/companion-windows.stamp ${output}/companion/companion-linux.stamp
+
+
+# Clean binaries It will be hosting built on demand firmware
+rm -rf $workdir/binaries/*
+rm -rf $workdir/binaries/.lock
+
+# RC is considered as valid ony if we get to that point
+echo $index > ${workdir}/index.txt
diff --git a/tools/rc23/build-sdcard.sh b/tools/rc23/build-sdcard.sh
new file mode 100755
index 000000000..6dbeded39
--- /dev/null
+++ b/tools/rc23/build-sdcard.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+set -e
+set -x
+
+workdir=/home/opentx/rc23
+output=/var/www/html/2.3/rc
+
+# Handle opentx.sdcard.version
+sdcard_version="2.3V"$(grep 'set(SDCARD_REVISION' ${workdir}/code/CMakeLists.txt | grep -o '".*"' | sed 's/"//g')
+echo ${sdcard_version} > ${workdir}/code/radio/sdcard/horus/opentx.sdcard.version
+echo ${sdcard_version} > ${workdir}/code/radio/sdcard/taranis-x9/opentx.sdcard.version
+echo ${sdcard_version} > ${workdir}/code/radio/sdcard/taranis-x7/opentx.sdcard.version
+
+
+if cmp --silent ${workdir}/code/radio/sdcard/horus/opentx.sdcard.version ${workdir}/opentx.sdcard.version
+then
+  exit
+else
+  cd ${workdir}
+
+  # Copy git sdcard data
+  rm -Rf ${workdir}/sdcard
+  cp -r ${workdir}/code/radio/sdcard .
+
+  # Get images for Horus
+  mkdir -p ${workdir}/sdcard/horus/IMAGES
+  cp /home/opentx/horus-bitmaps/* ${workdir}/sdcard/horus/IMAGES/
+
+
+  # Request sound pack generation
+  if [[ ! -d /tmp/SOUNDS/fr ]];then
+    ${workdir}/code/tools/rc23/tts.py en csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/es ]];then
+    ${workdir}/code/tools/rc23/tts.py fr csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/it ]];then
+    ${workdir}/code/tools/rc23/tts.py es csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/de ]];then
+    ${workdir}/code/tools/rc23/tts.py it csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/cz ]];then
+    ${workdir}/code/tools/rc23/tts.py de csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/pl ]];then
+    ${workdir}/code/tools/rc23/tts.py cz csv files
+  fi
+  if [[ ! -d /tmp/SOUNDS/ru ]];then
+    ${workdir}/code/tools/rc23/tts.py pt csv files
+  fi
+  ${workdir}/code/tools/rc23/tts.py ru csv psv files
+
+  # Create sdcards.zips for supported platforms
+  mv /tmp/SOUNDS ${workdir}/sdcard/horus/
+  mkdir ${workdir}/sdcard/taranis-x9/SOUNDS
+  mkdir ${workdir}/sdcard/taranis-x7/SOUNDS
+  cp -r ${workdir}/sdcard/horus/SOUNDS ${workdir}/sdcard/taranis-x9/
+  cp -r ${workdir}/sdcard/horus/SOUNDS ${workdir}/sdcard/taranis-x7/
+  cd ${workdir}/sdcard/horus && zip -r ${output}/sdcard/sdcard-horus-${sdcard_version}.zip *
+  cd ${workdir}/sdcard/taranis-x9 && zip -r ${output}/sdcard/sdcard-taranis-x9-${sdcard_version}.zip *
+  cd ${workdir}/sdcard/taranis-x7 && zip -r ${output}/sdcard/sdcard-taranis-x7-${sdcard_version}.zip *
+
+  # Create symlinks for other radios
+  ln -s ${output}/sdcard/sdcard-taranis-x7-${sdcard_version}.zip ${output}/sdcard/sdcard-taranis-xlite-${sdcard_version}.zip
+  ln -s ${output}/sdcard/sdcard-taranis-x7-${sdcard_version}.zip ${output}/sdcard/sdcard-taranis-x9lite-${sdcard_version}.zip
+  ln -s ${output}/sdcard/sdcard-taranis-x7-${sdcard_version}.zip ${output}/sdcard/sdcard-jumper-t12-${sdcard_version}.zip
+
+  # remove LUA stuff for 9x platform
+  rm -Rf ${workdir}/sdcard/taranis-x7/SCRIPTS
+  rm -Rf ${workdir}/sdcard/taranis-x7/FrSky-utilities
+  cd ${workdir}/sdcard/taranis-x7 && zip -r ${output}/sdcard/sdcard-9xarm-${sdcard_version}.zip *
+
+  rm -Rf ${workdir}/sdcard
+  cp -r ${workdir}/code/radio/sdcard/horus/opentx.sdcard.version ${workdir}
+fi
diff --git a/tools/rc23/tts.py b/tools/rc23/tts.py
new file mode 100755
index 000000000..fc42cfeb6
--- /dev/null
+++ b/tools/rc23/tts.py
@@ -0,0 +1,152 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+
+# This script is a modified version to support Linux TTS fiel genration using PicoTTS
+
+# Sound pack maintainers (incomplete list) by language alphabetical order
+# Czech      : Martin Hotar
+# French     : Bertrand Songis & André Bernet
+# English    : Rob Thompson & Martin Hotar
+# German     : Romolo Manfredini (Some corrections by Peer)
+# Italian    : Romolo Manfredini
+# Portuguese : Romolo Manfredini
+# Spanish    : Romolo Manfredini (With the help of Jose Moreno)
+
+# from __future__ import print_function
+
+import os
+import sys
+import subprocess
+import zipfile
+from gtts import gTTS
+from tts_common import *
+board = "taranis"
+
+reload(sys)
+sys.setdefaultencoding('utf8')
+
+SOURCE_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
+lib_path = os.path.abspath(os.path.join(SOURCE_DIRECTORY, '..', '..', 'radio', 'util'))
+sys.path.append(lib_path)
+
+def generate(str, filename):
+    if 0:
+        output = "output.wav"
+        command = 'pico2wave -l=%s -w=%s "%s"' % (voice, output, str)
+        os.system(command.encode('utf-8'))
+        command = "sox %s -r 32000 %s reverse silence 1 0.1 0.1%% reverse" % (output, filename)
+        os.system(command.encode('utf-8'))
+    else:
+        output = u"output.mp3"
+        tts = gTTS(text=str, lang=voice[:2])
+        tts.save(output)
+        command = "sox --norm %s -r 32000 %s tempo 1.2" % (output, filename)
+        os.system(command.encode('utf-8'))
+        command = "rm -f output.mp3"
+        os.system(command.encode('utf-8'))
+
+################################################################
+
+if __name__ == "__main__":
+    if "en" in sys.argv:
+        from tts_en import systemSounds, sounds
+
+        directory = "en"
+        voice = "en-US"
+
+    elif "fr" in sys.argv:
+        from tts_fr import systemSounds, sounds
+
+        directory = "fr"
+        voice = "fr-FR"
+
+    elif "it" in sys.argv:
+        from tts_it import systemSounds, sounds
+
+        directory = "it"
+        voice = "it-IT"
+
+    elif "de" in sys.argv:
+        from tts_de import systemSounds, sounds
+
+        directory = "de"
+        voice = "de-DE"
+
+    elif "es" in sys.argv:
+        from tts_es import systemSounds, sounds
+
+        directory = "es"
+        voice = "es-ES"
+
+    elif "cz" in sys.argv:
+        from tts_cz import systemSounds, sounds
+
+        directory = "cz"
+        voice = "cs-CZ"
+
+    elif "ru" in sys.argv:
+        from tts_ru import systemSounds, sounds
+
+        directory = "ru"
+        voice = "ru-RU"
+
+    elif "pt" in sys.argv:
+        from tts_pt import systemSounds, sounds
+
+        directory = "pt"
+        voice = "pt-PT"
+
+    else:
+        print("which language?")
+        exit()
+
+    if "csv" in sys.argv:
+        path = "/tmp/SOUNDS/" + directory + "/SYSTEM/"
+        if not os.path.exists(path):
+            os.makedirs(path)
+        os.chdir(path)
+        with open("%s-%s.csv" % (voice, board), "wb") as csvFile:
+            for s, f in systemSounds:
+                if s and f:
+                    l = u""
+                    if board in ("sky9x", "taranis"):
+                        l += u"SOUNDS/%s/SYSTEM;" % directory
+                    l += f + u";" + s + u"\n"
+                    csvFile.write(l.encode("utf-8"))
+            for s, f in sounds:
+                if s and f:
+                    l = u""
+                    if board in ("sky9x", "taranis"):
+                        l += u"SOUNDS/%s;" % directory
+                    l += f + u";" + s + u"\n"
+                    csvFile.write(l.encode("utf-8"))
+
+    if "psv" in sys.argv:
+        path = "/tmp/SOUNDS/" + directory + "/"
+        if not os.path.exists(path):
+            os.makedirs(path)
+        os.chdir(path)
+        with open("%s-%s.psv" % (voice, board), "wb") as csvFile:
+            for s, f in systemSounds:
+                if s and f:
+                    l = u"SYSTEM|" + f.replace(".wav", "") + u"|" + s + u"\r\n"
+                    csvFile.write(l.encode("windows-1251"))
+            for s, f in sounds:
+                if s and f:
+                    l = u"|" + f.replace(".wav", "") + u"|" + s + u"\r\n"
+                    csvFile.write(l.encode("windows-1251"))
+
+
+    if "files" in sys.argv:
+        path = "/tmp/SOUNDS/" + directory + "/SYSTEM/"
+        if not os.path.exists(path):
+            os.makedirs(path)
+        os.chdir(path)
+        for s, f in systemSounds:
+            if s and f:
+                generate(s, f)
+        os.chdir("..")
+        for s, f in sounds:
+            if s and f:
+                generate(s, f)
diff --git a/tools/rc23/tts_common.py b/tools/rc23/tts_common.py
new file mode 100644
index 000000000..25623b005
--- /dev/null
+++ b/tools/rc23/tts_common.py
@@ -0,0 +1,14 @@
+NO_ALTERNATE = 1024
+PROMPT_CUSTOM_BASE = 256
+PROMPT_SYSTEM_BASE = 0
+board = "taranis"
+
+import sys
+
+def filename(idx, alternate=0):
+  ext = ".wav"
+  if isinstance(idx, int):
+    result = "%04d%s" % (idx, ext)
+  elif board in ('sky9x', 'taranis'):
+    result = idx + ext
+  return result