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

Philip Isaacs showcasefloyd at gmail.com
Sat Mar 29 19:56:41 UTC 2014

On Friday, March 28, 2014, Philip Isaacs <showcasefloyd at gmail.com> wrote:

> On Fri, Mar 28, 2014 at 4:22 PM, Eric Sharkey <eric at lisaneric.org> wrote:
>> On Fri, Mar 28, 2014 at 2:19 PM, Tom Lichti <tom at redpepperracing.com>
>> wrote:
>> > I can change the channel via firewire (at least I think it works), but
>> that does
>> > not change the channel that is being sent through the Component output
>> (I am
>> > recording via HD-PVR). I presume that the channel being output via
>> firewire
>> > is also not changed via IR.
>> Wow.  I've never heard of that one.
>> Does that mean you can use one STB to record two shows at once?  (One
>> via firewire and one via component?)  I would not have thought that
>> was possible.
>> Eric
> @Tom. Thanks for your feedback. Actually when I first started this thread
> it was because I was trying to use Firewire to record video change the
> channel on my STB (Cisco RNG150N). Basically just use the one cord for
> both. I was able to successfully capture video off my STB beautifully but I
> couldn't find any way to change the channel. None of the scripts I tried
> would work. Well that's not entirely true. One worked but it would only
> changed the channel up and down, it would except no other commands.
> So then I decided to try to the IR Blaster /Emitter that came with my HP
> MCEUSB Kit to change the channel on my STB while still using the Firewire
> to capture video. But it's not working either, well not yet at least. I've
> got a few more things to try including picking up an Iguana IR USB which
> I've heard good things about from this list. So we shall see.
> Floyd

Success! So after playing around with Irrecord last night I was able to
create my own lircd.conf for my RNG150 and after adding that to my
hardware.conf was able to successfully change cable channels and power the
STB via the LircChannelChange script using the IR Transmitter. It works!!!
The lircd.conf files that I download online for my STB didn't seems to work
which leads me to believe that my Cable Box is probably not really the
correct version or brand I think it is. Who knows?

Also the Cisco RNG150N does need a IR Receiver to work. It will not accept
commands otherwise. I know this makes no sense, but I tried it both ways
and it only works with the receiver plugged in. The forum boards at Comcast
at this one correct. If someone knows the reason why for this Iove to hear

Anyhow, this is great news, since I just ordered an HD PVR 1212 (from eBay)
and plan to set that up and try it out next. I also think I'll add some of
my findings to the MythTV WIki because to be honest half the problems I've
run into are issues that weren't on the wiki.

That being said. Thanks to all for your advice (it really did help a lot)
and sorry for the long email thread
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