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<div class="moz-cite-prefix">On 03/25/2014 02:50 PM, Philip Isaacs
wrote:<br>
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<div class="gmail_extra">@Gabe - Do you know where I can find an
example (or a tutorial) of how to write a channel changing
script that will call my IR Blaster from within MythTV? I
understand how it works now, but I'm not sure where to go from
there.</div>
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<div class="gmail_extra">Floyd</div>
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Like you, I have Comcast, and like you, I found that nothing I did
would make channel changing work through firewire. I recommend using
an IguanaIR IR blaster, you can get it from their website
(iguanaworks.net) for $40. My script is here<br>
<a class="moz-txt-link-freetext" href="https://code.google.com/p/mythtv-scripts/source/browse/trunk/install/opt/mythtv/bin/channelchange.sh">https://code.google.com/p/mythtv-scripts/source/browse/trunk/install/opt/mythtv/bin/channelchange.sh</a><br>
Other necessary scripts are also there. The IR channel changing is
100% reliable with these scripts, and you just point mythtv to the
external channel change script /opt/mythtv/bin/channelchange.sh. The
script takes care of a number of glitches that can happen, like the
Iguana service failing, lirc failing, the set top box being turned
off etc. One thing that DOES work with the Comcast set top box is
detecting through firewire that it is turned on.<br>
<br>
To use those scripts a number of things need to be set up - iguana
service, lirc, etc.<br>
<br>
Since tuning the set top box with an IR blaster takes a few seconds,
I set in mythtv the option to start recordings 15 seconds early.<br>
<br>
A small tip - you can use the set top box built in "VCR timer" to
set it to turn on at the correct times for the programs. You can see
the upcoming program list on mythtv and set the set top box to tune
the correct channels at those times. However this method is really
only for emergencies since it is very tedious and you can easily
make mistakes.<br>
<br>
Peter<br>
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