[mythtv-users] IR Blaster not always changing channel

[Chris Tepe]

I have an IR blaster set up to control my STB.  It works 90% of the time 
but 10% of the time it fails to change the channel.  I've put some 
logging in the channel change script so it is getting called.  I've 
tried putting a delay in the script and also sending the command twice 
within the same script but it has not improved the reliability.  some 
times it will pickup just the first digit and sometimes just the last.  
Here is the script I'm currently using.
#!/bin/sh
LOG=/var/log/mythtv/changer.log
exec >> $LOG 2>&1
NOW=$(date)
#$(date +"%b-%d-%y")
echo ===========
echo $NOW
echo Tuner 1
echo $1
echo ===========
  REMOTE_NAME=blaster
  irsend SET_TRANSMITTERS 1
sleep 0.4
  irsend SET_TRANSMITTERS 1
sleep 0.4
  for digit in $(echo $1 | sed -e 's/./& /g'); do
          irsend SEND_ONCE $REMOTE_NAME $digit
          sleep 0.4  # note, you may have to tweak the interdigit delay 
up a bit, depending on your STB model
echo $REMOTE_NAME - $digit
done
# irsend SEND_ONCE $REMOTE_NAME Enter

echo ===========
sleep 10.0
NOW=$(date)
echo ===========
echo $NOW
echo Tuner 1 - second send
echo $1
echo ===========
  REMOTE_NAME=blaster
  irsend SET_TRANSMITTERS 1
sleep 0.4
  irsend SET_TRANSMITTERS 1
sleep 0.4
  for digit in $(echo $1 | sed -e 's/./& /g'); do
          irsend SEND_ONCE $REMOTE_NAME $digit
          sleep 0.4  # note, you may have to tweak the interdigit delay 
up a bit, depending on your STB model
echo $REMOTE_NAME - $digit
done
# irsend SEND_ONCE $REMOTE_NAME Enter

echo ===========
exit 0