[mythtv-users] So confused. Firewire to STB - channel change script - mythchanger

Philip Isaacs showcasefloyd at gmail.com
Wed Mar 26 15:57:23 UTC 2014

On Wed, Mar 26, 2014 at 11:53 AM, Karl Newman <newmank1 at asme.org> wrote:

> On Wed, Mar 26, 2014 at 7:05 AM, Philip Isaacs <showcasefloyd at gmail.com>wrote:
>> On Tue, Mar 25, 2014 at 5:22 PM, Peter Bennett (cats22) <
>> cats22 at comcast.net> wrote:
>>>  On 03/25/2014 02:50 PM, Philip Isaacs wrote:
>>>  @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.
>>>  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
>>> https://code.google.com/p/mythtv-scripts/source/browse/trunk/install/opt/mythtv/bin/channelchange.sh
>>> 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.
>>> To use those scripts a number of things need to be set up - iguana
>>> service, lirc, etc.
>>> 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.
>>> 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.
>>> Peter
>> @Peter. This is really awesome thanks so much.
>> I've already started messing around with setting up a IR Blaster using my
>> MCE USB Kit (that came with the WINTV HVR 1600)  and I have no plans to buy
>> anything new at this time. That being said will your scripts work with the
>> "mceusb" remote? I downloaded the "LircChannelChanger" one last night "
>> http://www.mythtv.org/wiki/LircChannelChanger" and started trying to get
>> it to work from the command line, but the STB didn't seem to respond. My
>> STB is the RNG150N.
> One small detail--did you find a lircd.conf file with the appropriate lirc
> IR codes for your STB?
> Karl

@Karl - I don't think so. Where would I find the appropriate lircd.conf
file. Is it posted somewhere online?

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