[mythtv-users] Nvidia ION unreliable HDHR Prime at gigabit speeds

[Daryl McDonald]

On Feb 27, 2016 10:16 PM, "Gary Buhrmaster" <gary.buhrmaster at gmail.com>
wrote:
>
> On Sun, Feb 28, 2016 at 2:23 AM, Will Dormann <wdormann at gmail.com> wrote:
> ....
> > I see now that my cable box has what appears to be a 3.5" jack called
> > "IR Remote Input".   Which I would assume the MythTV box can perhaps
> > control w/o IR anywhere in the chain, right?  i.e., serial to serial.
>
> Well, "simulated" IR blaster to "simulated" IR receiver (with
> no actual IR (except inside the IC) involved).  You still need
> a "blaster" which accepts a plug for the emitter itself, and then
> plug the output into the IR in port.  Sometimes you can use
> a serial output port of your PC, and sometimes you want a
> "real" blaster to meet the tolerances of the receiver (I had
> used both an iguanaIR and the commandIR for my "blaster"
> in a previous life).
>
> > Or is the opto-isolator used because the IR Input port isn't designed to
> > be electrically connected to another system, due to ground loops or
> > whatnot?
>
> Right, potential ground (loop) issues.  While "usually" it
> will work sharing ground, I am a bit on the paranoid side,
> so designed a circuit which shared nothing.  Many others
> have done equivalent solutions (what I did is not special).
>
> There are a lot of solutions out there (if you look around
> for (old school) TiVo to DTA/STB direct connect cables
> in the usual places).
>
> >  Either way, do you have any links to your contribution to the
> > wiki?
>
> For the lirc channel changer script, I submitted/used this:
> https://www.mythtv.org/wiki/LircChannelChanger
>
> For the opto-isolator, I documented this at:
>
https://github.com/garybuhrmaster/misc/tree/master/IR_Blaster_to_Comcast_DTA_direct_connect_cable
> (I did not add it to the mythtv wiki since I figured it was
> too specialized).
>
> In any case, as long as firewire works for you, I would
> not touch it.  Just keep the idea of alternatives in your
> toolbox for future use.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://lists.mythtv.org/mailman/listinfo/mythtv-users
> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org

I've been using an IR blaster for three years not without a hiccup.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20160228/976cceae/attachment.html>