[mythtv-users] USB IR Blaster: close but no cigar

Greg Oliver oliver.greg at gmail.com
Thu Apr 15 01:23:51 UTC 2010

On Wed, Apr 14, 2010 at 8:02 PM, Kirk Bocek <t004 at kbocek.com> wrote:
> On 4/14/2010 5:29 PM, Greg Woods wrote:
>> I picked up one of these as recommended by a number of people on this
>> list:
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16880121002
>> I got the remote to work, but I caot get the blaster part of it to
>> work. I want to control a Comcast DTA box with it so that I can feed the
>> output of the Comcast DTA box to the PVR-500 card and record those
>> newly-encrypted channels (bastards!). But it all hinges on getting the
>> IR blaster to work.
>> I believe I have lircd configured properly. I recently compiled 0.8.6
>> from the tar file downloaded from lirc.org, and I am certain that I am
>> using the mceusb module that came with this (I made sure there were no
>> others in /lib/modules/`uname -r`).  I can send codes from the remote
>> that came with the DTA, and they are detected and reported correctly by
>> irw. So I tried this set of commands:
>> # irsend -d /dev/lircd SET_TRANSMITTERS 1
>> # irsend -d /dev/lircd SEND_ONCE ComcastDTA KEY_2
>> But nothing happens. I am sure I have the emitter close enough to the
>> receiver, but the receiver light does not flash. There is no visible
>> flash either when I look at the emitter (but should there be? the human
>> eye cannot see infrared).
>> Can someone provide some tips on how I can debug this? I am so close,
>> and yet so far )-:
> Yes, you should see a visible flash when the emitters are transmitting.
> Pretty sure that's the IR receiver I've got. I'm using it now.
> Are you sure that's the right device name? In my setup the device is
> /dev/lirc0 with an additional symbol link from /dev/lirc. Checking the
> irsend docs, I see it uses /var/run/lirc/lircd by default, which I also
> have. Have you tried that?

If lsusb shows it as Topseed 0x008, then you have to compile lirc from
cvs for the blasters to work properly.  Note - my model does not flash
on ir transmit, but I know some of them do.  It probably all depends
on which emitters they packaged with them at the time..


More information about the mythtv-users mailing list