diff --git a/scripts/beamercontrol.sh b/scripts/beamercontrol.sh
index c208845..1864df4 100755
--- a/scripts/beamercontrol.sh
+++ b/scripts/beamercontrol.sh
@@ -18,6 +18,25 @@ function beamerquery() {
   fi
   echo "$signalsource"
 }
+#             vv-- volume
+# 2a3140bf1c150a3230072a0101050300010001000001000100010185</control>
+#          1111111111222
+# 1234567890123456789012
+function beamervolumedown() {
+  curvol="ff"
+  rept=20 
+  while [ "$curvol" != "00" ] && [ $rept -gt 0 ]
+  do
+    curvol="$(wget -qO - 'http://'"$projip"'/tgi/return.tgi?query=control' |awk -F'[<>]' '/<control>/{print substr($3,13,2)}')"
+    echo "beamervolume was: $curvol"
+    if [ "$curvol" != "00" ]
+    then
+      wget -qO - 'http://'"$projip"'/tgi/return.tgi?command=2a310bf4070263'
+    fi
+    rept=$((rept-1))
+  done
+}
+
 function beameroff() {
   echo "Switching beamer off"
   wget -qO/dev/null http://$projip/tgi/return.tgi?command=2a3102fd0660 #projector off
@@ -98,7 +117,7 @@ function receivervolumedown() {
   ssh pi@doorbuzz '/usr/bin/irsend SEND_ONCE pioneer "KEY_VOLUMEDOWN"'
 }
 function usage() {
-  echo "Usage: $0 (beamer|screen) (on|dvi|hdmi1|hdmi2|vga|off|down|up)"
+  echo "Usage: $0 (beamer|screen|receiver) (on|dvi|hdmi1|hdmi2|vga|off|down|up|vol-|vol+)"
   exit
 }
 projip="$(cat $(dirname "$0")"/beamerip.txt")"
@@ -121,6 +140,8 @@ case $1 in
         ;;
       vga1) vga1 ; beameron && vga1
         ;;
+      "vol-") beamervolumedown 
+        ;;
       *) usage
     esac
     ;;
diff --git a/scripts/beamerdetect.sh b/scripts/beamerdetect.sh
index 0499556..efdfdbe 100755
--- a/scripts/beamerdetect.sh
+++ b/scripts/beamerdetect.sh
@@ -34,8 +34,10 @@ then
        [ "$(cat /var/run/caststatus)" = "Backdrop" ] )
   then   # port 15 is hdmi1 (chromecast) 
     raisescreen
+    lightcommander projector vol-
     echo "wget http://$projip/tgi/return.tgi?command=2a3102fd0660 #projector off"
-    wget -qO - 'http://'"$projip"'/tgi/return.tgi?command=2a3102fd0660' 2>&1 
+    lightcommander projector off
+    #wget -qO - 'http://'"$projip"'/tgi/return.tgi?command=2a3102fd0660' 2>&1 
     echo $? 
   else
     echo "not disabling projector because source is at $signalsource" 
@@ -58,8 +60,8 @@ do
   # from the acer webpage we read that bytes 30-31 contain 00 if power off and 01 if power on
   # we only test if 01, because if off, it can also give no response
   # but seems to be bytes 32-33 more accurate
-  statusbyte="$(wget -qO - 'http://'"$projip"'/tgi/return.tgi?query=info'|awk -F'[<>]' '/<info>/{print substr($3,31,2)}')"  
-  if [ "$statusbyte" = "01" ]
+  signalsource="$(wget -qO - 'http://'"$projip"'/tgi/return.tgi?query=info'|awk -F'[<>]' '/<info>/{print substr($3,31,2)}')"  
+  if [ "$signalsource" = "01" ]
   then
     if [ "$prevstatus" != "on" ]
     then
@@ -74,5 +76,16 @@ do
       prevstatus="off"
     fi
   fi
+#  logger -t "$(basename $0) $$" "source=$signalsource cast=$(cat /var/run/caststatus)"
   sleep 10
+  caststatus="$(cat /var/run/caststatus)"
+  if [ "$caststatus" != "Backdrop" ] &&
+     ( [ "$signalsource" = "" ] ||
+       [ "$signalsource" = "00" ] ||
+       [ "$signalsource" = "02" ] )
+  then
+    logger -t $(basename $0) "$$ signal on chromecast: $caststatus"
+    lightcommander projector hdmi2
+    sleep 3
+  fi
 done
diff --git a/scripts/caststatus.py b/scripts/caststatus.py
index 5a1391b..1aebe42 100755
--- a/scripts/caststatus.py
+++ b/scripts/caststatus.py
@@ -5,7 +5,8 @@ sys.path.append(os.path.dirname(__file__) + "/../pychromecast/")
 import pychromecast
 #mycastname=pychromecast.get_chromecasts_as_dict().keys()[0]
 mycastname="Level2 Chillcast DVI1"
-cast = pychromecast.get_chromecast(friendly_name=mycastname)
+chromecasts = pychromecast.get_chromecasts()
+cast=next(cc for cc in chromecasts if cc.device.friendly_name == mycastname)
 cast.wait()
 print(cast.device.friendly_name)
 offlinetime=0
diff --git a/scripts/lightcommander b/scripts/lightcommander
index 62ee53b..a04f6ea 100755
--- a/scripts/lightcommander
+++ b/scripts/lightcommander
@@ -2,7 +2,7 @@
 if [ "$1" = "" ]
 then
   echo "usage: $0 {main|chill|status|labsocket|alarm|screen} {on|off}"
-  echo "usage: $0 {projector} {on|hdmi1|hdmi2|dvi|vga1|off}"
+  echo "usage: $0 {projector} {on|hdmi1|hdmi2|dvi|vga1|off|vol-}"
   echo "usage; $0 {receiver} {on|off|hdmi|jack1|jack2|optical|tuner|cd|vol-|vol+}"
 #  echo "usage: $0 {maindoor} {open}"
   exit 1