[mythtv-users] LIRC, audio-alsa and the audio Jack
remco at rvt.com
Sun Feb 25 20:56:45 UTC 2007
On Sunday 25 February 2007, Jeremy Gillick wrote:
> I plan to grab the 5+ from an extra USB port. How do you prevent the
> audio from the remote going into the TV?
> Remco Treffkorn wrote:
> > On Sunday 25 February 2007, Jeremy Gillick wrote:
> >> I'm thinking of using audio-alsa for my receiver, but the circuit
> >> diagram (http://www.lirc.org/ir-audio.html) doesn't say how to connect
> >> the audio Jack. Does ground go to the base or the tip of the audio
> >> jack? I also am assuming it's a mono plug.
> >> Thanks,
> >> Jeremy
> > I am sure you can google the pinout for the Mic input.
> > Besides ground and Mic in it provides also 5V via a 2K series resistor.
> > You don't need the diode.
> > You should be able to hear your remote, if you monitor mic in.
> > I am using the Radioshack part with no problems.
Let's assume you are using line-in to capture ir.
Use alsamixer to set line-in to capture in the 'Capture' section.
Unmute line-in in the 'Playback' section, and adjust the volume.
You should now be able to hear your remote. If you are using the soundcard for
tv sound output, that can be annoying. Just mute line-in. Lircd can still
capture, but you will not hear the ir noises.
Remco Treffkorn (RT445)
remco at rvt.com (831) 685-1201
More information about the mythtv-users