Plugging the AM21 into a PC

Discussion in 'DIRECTV - AM21 Discussion (private)' started by Jeremy W, Mar 1, 2008.

  1. Mar 1, 2008 #1 of 21
    Jeremy W

    Jeremy W Hall Of Fame

    13,447
    0
    Jun 19, 2006
    My curiosity finally got the better of me, so I went ahead and plugged the AM21 into a desktop PC to see what would happen. The result was actually pretty interesting! It shows up as two devices, both called DIRECTV USB Tuner Device v1. Of course no drivers can be found, but it appears that it would work just fine if there were drivers available.
     
  2. Mar 1, 2008 #2 of 21
    RunnerFL

    RunnerFL Well-Known Member

    17,050
    312
    Jan 4, 2006
    wow, this is interesting...

    I wonder if there will be drivers in the future.
     
  3. Mar 1, 2008 #3 of 21
    Jeremy W

    Jeremy W Hall Of Fame

    13,447
    0
    Jun 19, 2006
    If I had to guess, I would say no. I don't think DirecTV has any interest in allowing the AM21 to be used with a PC.
     
  4. Mar 1, 2008 #4 of 21
    houskamp

    houskamp Active Member

    8,636
    3
    Sep 14, 2006
    I was going to do this too :) but working 6 days I haven't had much time.. might still just for laughs.. and try few different drivers to see if any work :)
     
  5. Mar 1, 2008 #5 of 21
    sbl

    sbl Icon DBSTalk Club

    930
    3
    Jul 21, 2007
    I would expect that sort of behavior from ANY USB device. That's part of the USB protocol. Sure, all you need is drivers....
     
  6. Mar 1, 2008 #6 of 21
    bobnielsen

    bobnielsen Éminence grise

    8,473
    92
    Jun 29, 2006
    Bainbridge...
    Just write a driver and it will work (it's only software, after all) :) Depending on the chips used, it might be possible, but I'm not going to try (I already have a HDHomeRun networked tuner which will serve my computers),

    There are several USB tuner "sticks" on the market and I would be quite surprised if the HR21 will recognize them.
     
  7. Mar 1, 2008 #7 of 21
    Drew2k

    Drew2k New Member

    14,514
    228
    Aug 16, 2006
    Cool find.
     
  8. Mar 1, 2008 #8 of 21
    azarby

    azarby Hall Of Fame

    4,133
    19
    Dec 15, 2006
    I wonder if the existing code is open source or not. If it is, some enterprising person could look at it and possibly make this into a HD tuner for your PC.

    Bob
     
  9. Mar 1, 2008 #9 of 21
    tfederov

    tfederov Well-Known Member

    4,779
    64
    Nov 18, 2005
    Jeremy, how did the HR21 behave with the AM21 pulled from it? Did it complain about missing channels?
     
  10. MIAMI1683

    MIAMI1683 New Member

    2,570
    0
    Jul 11, 2007
    No the HR21 doesn't say anything about it missing when you take it out. I have it out sometimes for cleaning and it hasn't once said anything. If you tune to OTA channels while it is out it goes to Searching for Channels. I also think the PC thing is interesting
     
  11. Stuart Sweet

    Stuart Sweet The Shadow Knows!

    37,060
    288
    Jun 18, 2006
    This doesn't surprise me, as I wouldn't be surprised if some of the same hardware were used in PC TV tuners.
     
  12. tfederov

    tfederov Well-Known Member

    4,779
    64
    Nov 18, 2005
    Are you plugging and unplugging while it's up?
     
  13. MIAMI1683

    MIAMI1683 New Member

    2,570
    0
    Jul 11, 2007
    Yup. Just did it again to verify. If I unplug the USB connection there is no message or anything. I also just noticed that under info it says " channels via antenna 31" I think that's really cool. This has been a good piece of hardware from the start. I know the software needs some fixes (im not complaing ) but when it gets released the masses wil be pleased.
     
  14. sbl

    sbl Icon DBSTalk Club

    930
    3
    Jul 21, 2007
    USB devices report their name and also a hex code which the OS uses to locate drivers. Any USB device, no matter what it's for, will be "visible" to a PC, and you'll see the name by which it identifies itself. This is entertaining but not meaningful if you are hoping for PC support of the AM21.

    As far as I know, NONE of the DirecTV code is open source.
     
  15. Jeremy W

    Jeremy W Hall Of Fame

    13,447
    0
    Jun 19, 2006
    It didn't complain, but when I tuned to an OTA channel, the message that came up said something like "tuner Off Air 1 is not present" or something like that. It was not a standard Searching... message.
     
  16. bobnielsen

    bobnielsen Éminence grise

    8,473
    92
    Jun 29, 2006
    Bainbridge...
    The basic Linux kernel uses the GNU General Public License, version 2. Any specialized applications such as drivers included in the software very probably do not, however.
     
  17. VLaslow

    VLaslow Active Member

    1,288
    8
    Aug 16, 2006
    I think I would prefer having a small USB Tuner card rather than an AM21 on my PC anyway. In fact, that's what I have and it works well.:)
     
  18. RobertE

    RobertE Active Member

    8,024
    0
    Jun 9, 2006
    Wonder how the HR21 will respond to two or more AM21s plugged in?
     
  19. Jeremy W

    Jeremy W Hall Of Fame

    13,447
    0
    Jun 19, 2006
    I'd imagine that it would just ignore all but the first one.
     
  20. Groundhog45

    Groundhog45 Hall Of Fame

    4,585
    89
    Nov 9, 2005
    Cedar Park,...
    It would seem that maybe loading the ATI drivers for that tuner chip might give some of the media programs a way to talk to the tuners. Just a guess. :D
     

Share This Page

spam firewall