[mythtv-users] IR Transmitter

[Dex West]

So what is the difference between the design described
by Dan and UIRT2?  UIRT2 seems much more complicated
what does it get you?

I'm was planning on build a transmitter based on the
following design:
http://users.skynet.be/sky50985/

--- Clint Gilders <techservices at onlinehobbyist.com>
wrote:
> Dan Morphis wrote:
> > To build the simple circuit, you'll need a few
> parts:
> > 
> > 1 x 1N4148 diode
> > 1 x 3k ohm
> > 1 x IR LED (Can be scavanged from an old remote,
> or you can use LD 271)
> > 1 x Soldier style db9 male
> > 
> > Soldier a wire on to pin 4 of the db9 header. 
> Take the other end and 
> > soldier it to the anode (The end W/O the black
> line) on the diode.  Take 
> > the other end of the diode and soldier it to one
> end of the resister.  
> > Take the other end of the resister and soldier it
> to anode of the ir led 
> > (The side w/o the flat spot [someone please
> correct me if I have that 
> > backwards]).  Take the other end of the ir led and
> soldier it to pin 5 
> > of the db9 male connector.
> > 
> > You should be looking at less than $5 in parts. 
> If you want a quick way 
> > to test the circuit, fire up the camcorder and
> look through the view 
> > finder while lirc is sending a signal.  A quick
> way to send the signal 
> > is: irsend SEND_START <REMOTE_NAME> 1
> > 
> > Hope this helps.  Feel free to ask any questions
> you might have!
> 
> Thank-you so much for the easy to follow
> instructions.
> 
> I yanked the IR LED and a coloured led out of a
> broken remote my kids 
> play with.  My wife brought me the wire, diode and
> resistor from work. I 
> removed the casing from a ps2 to serial mouse
> adapter to get the db9 
> plug.
> 
> I then soldered it all up (I included the coloured
> LED so I could see if 
> a signal was being sent).   I use star choice in
> Canada, and I was able 
> to find an lircd.conf file for it's remote ( at 
> http://lirc.sourceforge.net/remotes/motorola/IRC-442
> ).  I also 
> installed change_channel_lirc.sh from the contrib
> section of the myth 
> source.  I re-compiled lirc to work with the new
> transmitter, and 
> rebooted.   Whiz! Bang! It Works!  `irsend
> StarChoice405 300` tunes in 
> the CBC.
> 
> Oh yeah, I also had to add:
> 
> `/bin/setserial /dev/ttyS0 uart none` to the
> beginning of my lircd init 
> script.
> 
> Thanks again.
> -- 
> Clint Gilders <techservices at onlinehobbyist.com>
> Director of Technology Services
> OnlineHobbyist.com, Inc.
> > _______________________________________________
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> mythtv-users at mythtv.org
>
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> 


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