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Scientific Atlanta Explorer 3100 USB Port

 

 

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ryan.brancheau at us

Mar 14, 2004, 10:31 AM

Post #1 of 5 (3814 views)
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Scientific Atlanta Explorer 3100 USB Port

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.

Thanks


mythtv at zwanebloem

Mar 14, 2004, 2:26 PM

Post #2 of 5 (3684 views)
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Re: Scientific Atlanta Explorer 3100 USB Port [In reply to]

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..

Regards,

Tommy
> Thanks

> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev


danielk at cat

Mar 14, 2004, 6:27 PM

Post #3 of 5 (3683 views)
Permalink
Re: Scientific Atlanta Explorer 3100 USB Port [In reply to]

There might be more info here:
http://www.linux-usb.org/

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..
]
]Regards,
]
]Tommy
]> Thanks
]
]> _______________________________________________
]> mythtv-dev mailing list
]> mythtv-dev [at] mythtv
]> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
]
]


simon at koala

Mar 15, 2004, 1:55 AM

Post #4 of 5 (3706 views)
Permalink
Re: Scientific Atlanta Explorer 3100 USB Port [In reply to]

On Sunday 14 March 2004 17:31, 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.

linux has a thing called the usb gadget driver - whereby the linux box can act
as a usb peripheral. you would need to do something with that to fake being a
keyboard. it's possible that somebody has already written such a beastie; as
the kernel level infrastructure is there. never looked myself. i would have a
trawl around google.

--
simon
_______________________________________________
mythtv-dev mailing list
mythtv-dev [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev


danielk at cat

Mar 15, 2004, 6:45 AM

Post #5 of 5 (3695 views)
Permalink
Re: Scientific Atlanta Explorer 3100 USB Port [In reply to]

I just wanted to add that I googled after my message and discovered the
usb gadget driver will not work on most PC's as suspected, but USB
development boards that plug into your PCI bus are readily available.
Also it seems like Linux PDAs may also have all the circuitry you need,
if you have a retired PDA with wireless, you could probably set
something up.

-- Daniel

On Sun, 14 Mar 2004, Daniel Thor Kristjansson wrote:

]
]There might be more info here:
] http://www.linux-usb.org/
]
]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..
]]
]]Regards,
]]
]]Tommy
]]> Thanks
]]
]]> _______________________________________________
]]> mythtv-dev mailing list
]]> mythtv-dev [at] mythtv
]]> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
]]
]]
]

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