[mythtv] Scientific Atlanta Explorer 3100 USB Port

Daniel Thor Kristjansson danielk at cat.nyu.edu
Sun Mar 14 20:27:35 EST 2004

There might be more info here:

Linux can act as a USB device. I don't know if the hardware in a
conventinal PC can act as a device though. If not there are a few USB
chips on the market with simple interfaces, it might not be too hard to
construct something. There would be a lot of uses for such a thing, for
one controlling PCs in a server room when they are in the openfirmware
or BIOS state. But I can't find anything online via google.

You could probably use one usb chip hooked to your parallel printer
port, instead of two chips with the tx and rx wires swapped. Another
option to look at would be those USB networking cables, if any of them
just acts as null modem, that could be really easy to program to act as
a keyboard.

-- Daniel

On Sun, 14 Mar 2004, Tommy Faasen wrote:

]On Sun, Mar 14, 2004 at 12:31:26PM -0500, Ryan Brancheau (US) wrote:
]> I have a Scientific Atlanta Explorer 3100 cable-box with a  USB port.  I
]> can plug a standard USB keyboard into this port and change the channel
]> by either using arrow keys and <Enter> or by simply typing in the
]> number.  What I'm wondering is if there's any way to use a USB crossover
]> cable to make the cable-box think my MythTV box is a keyboard and simply
]> send digits across to change the channel.  Or possibly convert the USB
]> on the box to serial on the MythTV and send digits that way?  Any
]> thoughts would be appreciated.
]The problem is that both devices are usb hosts, which is a hardware
]thing, so not knowing much more about usb then that I wouldn't think it
]is possible..
]> Thanks
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