Re: improved transmitter is not working

[Ryan V. <sim...@ya...>]

On Sun, 25 Jan 2004 15:35:11 -0500
"Chris Breen" <ch...@cb...> wrote:

> Hello All,
> 
> I have assembled the improved transmitter as described here: http://www.lirc.org/improved_transmitter.html
> 
> I've compiled lirc to use the "transmitter diode" and "software carrier".  Next I do the following:
> 
> modprobe serial
> setserial /dev/ttyS0 uart none
> modprobe lirc_serial
> 
> at this point i do a dmesg:
> .....
> ttyS00 at 0x03f8 (irq = 4) is a 16550A
> lirc_dev: IR Remote Control driver registered, at major 61
> lirc_serial: auto-detected active high receiver
> lirc_dev: lirc_register_plugin:sample_rate: 0
> _devfs_append_entry(0): dir: "lirc" is not a directory
> devfs_register(lirc/0): could not append to parent, err: -20
> 
> What troubles me here is that there is no mention of setting the carrier frequency or anything of that sort which seems to appear in other peoples kernel messages.  
> 
> In any event when I send commands using lirc_irsend SEND_ONCE remotename remotecode, the LED lights up but nothing happens on the device that i'm trying to communicate with.  The voltage drop over the two IR LED's seems to be about .40V.  I have also noticed that the 4700 uF cap stores about 11V of charge.
> 
> So i'm completely stumped.  I'm thinking that either my IR LEDs are not the right type, require too much energy, etc.  The LED's in question are old radio shack 276-142, with a reverse voltage of 2V, forward current of 40mA and wavelength of 915nm.
> 
> Any help on where I can go from here would be greatly appreciated.
> 
> -Chris

sorry it took so long to reply, just saw your message on the list, to me it looks like its expecting /dev/lirc to be a directory, i've never used lirc_serial, you might want to do an 

rm /dev/lirc
mkdir /dev/lirc

and see what happens

-----BEGIN GEEK CODE BLOCK----
Version: 3.1
GCS/CM/E/M/S/O d--(-) s:+>:-
a--->-->->>+>++>+++$ C+++>++++$ UL++++>++++$
P+++>++++$ L++++>++++$ !E-? W++>++$>+++$
N++>* !o? !K? w--->---$ O-- M-@ !V--? PS+++(++(+((-))))
PE Y+(++)@ PGP+++(++) t+++>+++$ 5--(-)@ X++@>+++@
R+(++)@ tv+++@>++@ b+>++ DI++++ D+++@ G+++>++++ 
e>+$>++$>+++$>++++$>+++++$ h+>++ r*(--(++))@ !y+>-->->+++@
-----END GEEK CODE BLOCK-----