[mythtv] Suggested IR Transmitter Circuit

[Rick Warner]

Hello Jeremy,
	I just built the "Enrique Vidal" circuit and it works beautifully.. i think 
that's the improved_transmitter one

I'm using it from about 10 ft away.  I got most of my parts from radio shack.  
The ir transmitter was from an old remote control (the component it was for 
was broken anyway).  I got the resistors and the transistors from my work, 
but those are all easily found at radio shack.  For the diodes (since the 
circuit doesn't say what to use), I used all 1N4148 diodes- standard silicon 
switching diodes.  Just double check which pins are emitter, collector and 
base on your transistors before you start.. i wired mine backwards at first 
and took an hour to realize it!
  For the serial port connector, I just used one of those cables that go from 
the motherboard tothe rear of the pc and cut the connector that goes to the 
board.... i can then use a regular serial cable as an extension to the 
transmitter..  this saved me from having to solder to the ever so small pins 
on the serial connector directly.


On Friday 03 January 2003 02:44 pm, Jeremy Oddo wrote:
> I've got a question for those people successfully using a homebrew IR
> transmitter.  Which circuit are you using?  I've found four designs.  I
> don't need it to have great range (1 foot is fine).  I tried building the
> "http://www.blars.org/blarslirc/" circuit but I must have screwed it up
> alond the way because it's not working...my receiver is working fine, tho.
>
> Any suggestions?  Here's the circuits I'm looking at:
>
> 1.  http://www.lirc.org/transmitters.html  (the first circuit)
> 2.  http://www.lirc.org/transmitters.html  (the second circuit)
> 3.  http://www.lirc.org/improved_transmitter.html
> 4.  http://www.blars.org/blarslirc/
>
>
> Thanks!
> Jeremy
>
>
> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev@snowman.net
> http://www.snowman.net/mailman/listinfo/mythtv-dev