rather than counting on the colors of the wires, you may want to go with 
a slightly more dependable means of identifying the pin assignments...

http://www.fwdepot.com/wcable.html
http://www.frontx.com/cpx105_2.html
http://developer.apple.com/techpubs/hardware/Developer_Notes/Macintosh_CPUs-G3/iBook/3_Input-Output/FireWire_Connector23.html

you could also plug a connector into a hub and use a DVM just to make
sure.  hey, better safe than sorry with expensive equipment. =)

-steve diverdi
-sdiverdi@c ..........


> Hi Blair and all,
> 
> I am keen to try some batteries with a point grey dragonfly camera. I am 
> not sure what its minimum happy voltage is though. I am hoping to use 
> the nice sony rechargeable 7.5 volt camcorder batteries (same as the 
> glasstron and the eyetrek use). worst case, I may have to put two in 
> series to get 15 volts. I also intend to modify a cable to allow a power 
> supply without using a firewire hub (I don't trust them, I have had a 
> demo fall over because of a loose connection at the hub).
> 
> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin -> 
> 4pin cable and chop each of them in half. Locate which wires are 
> positive and negative of the power supply (sony are usually helpful 
> enough to make them the black and white ones) if you use two cables by 
> the same manufacturer, then the power wires will be the ones that are 
> not present in the 4 pin cable. So the idea is to join all the like 
> colored wires from the 4pin and the 6pin cable parts, then run the 
> remaining two wires to the power supply.
> 
> Of course I hav not done this yet but, once I get a few paper deadlines 
> out of the way, I'll get out my soldering iron and tell you how it goes. :)
> 
> rod.
> 
> 
> 
> Blair MacIntyre wrote:
> 
> >> The Fire-i does look like a nice option. If you "self power" it, can 
> >> you directly use a 6 to 4 wire cable to a laptop (my Toshiba Satellite 
> >> has a 4 wire 1394 connector...I now need to use an Orangelink powered 
> >> firewire hub to connect it)?
> > 
> > 
> > Yes, you can.
> > 
> >> With the daisy chaining, can you power just one Fire-I with the 6 to 4 
> >> wire cable and then plug a seconf Fire-i via a 6 wire?
> > 
> > 
> > I don't know, never tried.  I think it might be possible, though.
> > 
> >> And can the power be supplied by a battery pack for portability?
> > 
> > 
> > Yes, definitely.  We do that.  It accepts a wide range of power, so we 
> > use camcorder batteries with a custom cable.
> > 
> >> Is the lens/distortion any better than the i_Bot? I expect in that 
> >> respect they are probably similar.
> > 
> > 
> > They are, I think...
> > 
> > 
> >>
> >> Thanks for the info...
> >> Mike
> >> ---
> >> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
> >>
> >>> The Fire-i cameras seem (to me) to be better quality than the iBot 
> >>> (and other similar ones).  The price is about the same.
> >>>
> >>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, with 
> >>> the very same intention (putting a pair of them on the front).   If 
> >>> anyone else is interested in sharing ideas on how to mount them, I'd 
> >>> be up for it;  I also want to mount it on a helmet or other "rigid" 
> >>> structure, so we can mount other cameras looking in different 
> >>> directions that are in a fixed relationship to the hmd.
> >>>
> >>>
> >>>
> >>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
> >>>
> >>>> Rod,
> >>>> The Dragonfly looks pretty good, especially if you can really get it 
> >>>> in a 1024 X 768 native resolution. I didn't see a price on the web 
> >>>> site.
> >>>>
> >>>> The iBOT and similar cameras are basically single board devices. I 
> >>>> haven't done it yet, but if I ever find enough student help to work 
> >>>> on it, my plan is to disassemble two iBots and stick them on an 
> >>>> iGlasses SVGA HMD. That gives you 640 X 480 and the price is right 
> >>>> ($80 per camera or less). They still are a bit bulky though, the 
> >>>> board being about 2.5" in diameter.
> >>>>
> >>>> What ever happened to the Canon HMD display with integral cameras 
> >>>> that was demonstrated at previous Siggraphs. That seemed like a 
> >>>> nice, commercially available way to go, though I assume the cameras 
> >>>> were lower resolution.
> >>>>
> >>>> Thanks
> >>>> Mike Redmond
> >>>> ---
> >>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
> >>>>
> >>>>> currently I am using Point Grey Dragonfly cameras with head mounted 
> >>>>> displays.
> >>>>>
> >>>>> Has anyone seen anything better in the small size range?
> >>>>>
> >>>>> did anyone manage to get a real price out of silicon concepts for 
> >>>>> their super-duper USB2 cameras?
> >>>>>
> >>>>> I will probably get another dragonfly or two if there's nothing 
> >>>>> better out there.
> >>>>>
> >>>>> Rod.
> >>>>
> > 
> > 
> > 
> 
> 

rather than counting on the colors of the wires, you may want to go with 
a slightly more dependable means of identifying the pin assignments...

http://www.fwdepot.com/wcable.html
http://www.frontx.com/cpx105_2.html
http://developer.apple.com/techpubs/hardware/Developer_Notes/Macintosh_CPUs-G3/iBook/3_Input-Output/FireWire_Connector23.html

you could also plug a connector into a hub and use a DVM just to make
sure.  hey, better safe than sorry with expensive equipment. =)

-steve diverdi
-sdiverdi@c ..........


> Hi Blair and all,
> 
> I am keen to try some batteries with a point grey dragonfly camera. I am 
> not sure what its minimum happy voltage is though. I am hoping to use 
> the nice sony rechargeable 7.5 volt camcorder batteries (same as the 
> glasstron and the eyetrek use). worst case, I may have to put two in 
> series to get 15 volts. I also intend to modify a cable to allow a power 
> supply without using a firewire hub (I don't trust them, I have had a 
> demo fall over because of a loose connection at the hub).
> 
> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin -> 
> 4pin cable and chop each of them in half. Locate which wires are 
> positive and negative of the power supply (sony are usually helpful 
> enough to make them the black and white ones) if you use two cables by 
> the same manufacturer, then the power wires will be the ones that are 
> not present in the 4 pin cable. So the idea is to join all the like 
> colored wires from the 4pin and the 6pin cable parts, then run the 
> remaining two wires to the power supply.
> 
> Of course I hav not done this yet but, once I get a few paper deadlines 
> out of the way, I'll get out my soldering iron and tell you how it goes. :)
> 
> rod.
> 
> 
> 
> Blair MacIntyre wrote:
> 
> >> The Fire-i does look like a nice option. If you "self power" it, can 
> >> you directly use a 6 to 4 wire cable to a laptop (my Toshiba Satellite 
> >> has a 4 wire 1394 connector...I now need to use an Orangelink powered 
> >> firewire hub to connect it)?
> > 
> > 
> > Yes, you can.
> > 
> >> With the daisy chaining, can you power just one Fire-I with the 6 to 4 
> >> wire cable and then plug a seconf Fire-i via a 6 wire?
> > 
> > 
> > I don't know, never tried.  I think it might be possible, though.
> > 
> >> And can the power be supplied by a battery pack for portability?
> > 
> > 
> > Yes, definitely.  We do that.  It accepts a wide range of power, so we 
> > use camcorder batteries with a custom cable.
> > 
> >> Is the lens/distortion any better than the i_Bot? I expect in that 
> >> respect they are probably similar.
> > 
> > 
> > They are, I think...
> > 
> > 
> >>
> >> Thanks for the info...
> >> Mike
> >> ---
> >> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
> >>
> >>> The Fire-i cameras seem (to me) to be better quality than the iBot 
> >>> (and other similar ones).  The price is about the same.
> >>>
> >>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, with 
> >>> the very same intention (putting a pair of them on the front).   If 
> >>> anyone else is interested in sharing ideas on how to mount them, I'd 
> >>> be up for it;  I also want to mount it on a helmet or other "rigid" 
> >>> structure, so we can mount other cameras looking in different 
> >>> directions that are in a fixed relationship to the hmd.
> >>>
> >>>
> >>>
> >>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
> >>>
> >>>> Rod,
> >>>> The Dragonfly looks pretty good, especially if you can really get it 
> >>>> in a 1024 X 768 native resolution. I didn't see a price on the web 
> >>>> site.
> >>>>
> >>>> The iBOT and similar cameras are basically single board devices. I 
> >>>> haven't done it yet, but if I ever find enough student help to work 
> >>>> on it, my plan is to disassemble two iBots and stick them on an 
> >>>> iGlasses SVGA HMD. That gives you 640 X 480 and the price is right 
> >>>> ($80 per camera or less). They still are a bit bulky though, the 
> >>>> board being about 2.5" in diameter.
> >>>>
> >>>> What ever happened to the Canon HMD display with integral cameras 
> >>>> that was demonstrated at previous Siggraphs. That seemed like a 
> >>>> nice, commercially available way to go, though I assume the cameras 
> >>>> were lower resolution.
> >>>>
> >>>> Thanks
> >>>> Mike Redmond
> >>>> ---
> >>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
> >>>>
> >>>>> currently I am using Point Grey Dragonfly cameras with head mounted 
> >>>>> displays.
> >>>>>
> >>>>> Has anyone seen anything better in the small size range?
> >>>>>
> >>>>> did anyone manage to get a real price out of silicon concepts for 
> >>>>> their super-duper USB2 cameras?
> >>>>>
> >>>>> I will probably get another dragonfly or two if there's nothing 
> >>>>> better out there.
> >>>>>
> >>>>> Rod.
> >>>>
> > 
> > 
> > 
> 
> 

Hi Rodney,

Good luck with the cables;  I don't imagine I'd ever have the nerve to 
do that.  At $700 a pop for the DragonFly's, I'd much rather go in and 
solder a bunch of permanent connections (or something!) onto a $25 hub 
than risk frying the camera. :)


On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:

> Hi Blair and all,
>
> I am keen to try some batteries with a point grey dragonfly camera. I 
> am not sure what its minimum happy voltage is though. I am hoping to 
> use the nice sony rechargeable 7.5 volt camcorder batteries (same as 
> the glasstron and the eyetrek use). worst case, I may have to put two 
> in series to get 15 volts. I also intend to modify a cable to allow a 
> power supply without using a firewire hub (I don't trust them, I have 
> had a demo fall over because of a loose connection at the hub).
>
> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
> -> 4pin cable and chop each of them in half. Locate which wires are 
> positive and negative of the power supply (sony are usually helpful 
> enough to make them the black and white ones) if you use two cables by 
> the same manufacturer, then the power wires will be the ones that are 
> not present in the 4 pin cable. So the idea is to join all the like 
> colored wires from the 4pin and the 6pin cable parts, then run the 
> remaining two wires to the power supply.
>
> Of course I hav not done this yet but, once I get a few paper 
> deadlines out of the way, I'll get out my soldering iron and tell you 
> how it goes. :)
>
> rod.
>
>
>
> Blair MacIntyre wrote:
>
>>> The Fire-i does look like a nice option. If you "self power" it, can 
>>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>> Orangelink powered firewire hub to connect it)?
>> Yes, you can.
>>> With the daisy chaining, can you power just one Fire-I with the 6 to 
>>> 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>> I don't know, never tried.  I think it might be possible, though.
>>> And can the power be supplied by a battery pack for portability?
>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>> we use camcorder batteries with a custom cable.
>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>> respect they are probably similar.
>> They are, I think...
>>>
>>> Thanks for the info...
>>> Mike
>>> ---
>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>
>>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>>> (and other similar ones).  The price is about the same.
>>>>
>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>> with the very same intention (putting a pair of them on the front). 
>>>>   If anyone else is interested in sharing ideas on how to mount 
>>>> them, I'd be up for it;  I also want to mount it on a helmet or 
>>>> other "rigid" structure, so we can mount other cameras looking in 
>>>> different directions that are in a fixed relationship to the hmd.
>>>>
>>>>
>>>>
>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>>
>>>>> Rod,
>>>>> The Dragonfly looks pretty good, especially if you can really get 
>>>>> it in a 1024 X 768 native resolution. I didn't see a price on the 
>>>>> web site.
>>>>>
>>>>> The iBOT and similar cameras are basically single board devices. I 
>>>>> haven't done it yet, but if I ever find enough student help to 
>>>>> work on it, my plan is to disassemble two iBots and stick them on 
>>>>> an iGlasses SVGA HMD. That gives you 640 X 480 and the price is 
>>>>> right ($80 per camera or less). They still are a bit bulky though, 
>>>>> the board being about 2.5" in diameter.
>>>>>
>>>>> What ever happened to the Canon HMD display with integral cameras 
>>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>>> nice, commercially available way to go, though I assume the 
>>>>> cameras were lower resolution.
>>>>>
>>>>> Thanks
>>>>> Mike Redmond
>>>>> ---
>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>
>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>> mounted displays.
>>>>>>
>>>>>> Has anyone seen anything better in the small size range?
>>>>>>
>>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>>> their super-duper USB2 cameras?
>>>>>>
>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>> better out there.
>>>>>>
>>>>>> Rod.
>>>>>
>

Hi Rodney,

Good luck with the cables;  I don't imagine I'd ever have the nerve to 
do that.  At $700 a pop for the DragonFly's, I'd much rather go in and 
solder a bunch of permanent connections (or something!) onto a $25 hub 
than risk frying the camera. :)


On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:

> Hi Blair and all,
>
> I am keen to try some batteries with a point grey dragonfly camera. I 
> am not sure what its minimum happy voltage is though. I am hoping to 
> use the nice sony rechargeable 7.5 volt camcorder batteries (same as 
> the glasstron and the eyetrek use). worst case, I may have to put two 
> in series to get 15 volts. I also intend to modify a cable to allow a 
> power supply without using a firewire hub (I don't trust them, I have 
> had a demo fall over because of a loose connection at the hub).
>
> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
> -> 4pin cable and chop each of them in half. Locate which wires are 
> positive and negative of the power supply (sony are usually helpful 
> enough to make them the black and white ones) if you use two cables by 
> the same manufacturer, then the power wires will be the ones that are 
> not present in the 4 pin cable. So the idea is to join all the like 
> colored wires from the 4pin and the 6pin cable parts, then run the 
> remaining two wires to the power supply.
>
> Of course I hav not done this yet but, once I get a few paper 
> deadlines out of the way, I'll get out my soldering iron and tell you 
> how it goes. :)
>
> rod.
>
>
>
> Blair MacIntyre wrote:
>
>>> The Fire-i does look like a nice option. If you "self power" it, can 
>>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>> Orangelink powered firewire hub to connect it)?
>> Yes, you can.
>>> With the daisy chaining, can you power just one Fire-I with the 6 to 
>>> 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>> I don't know, never tried.  I think it might be possible, though.
>>> And can the power be supplied by a battery pack for portability?
>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>> we use camcorder batteries with a custom cable.
>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>> respect they are probably similar.
>> They are, I think...
>>>
>>> Thanks for the info...
>>> Mike
>>> ---
>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>
>>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>>> (and other similar ones).  The price is about the same.
>>>>
>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>> with the very same intention (putting a pair of them on the front). 
>>>>   If anyone else is interested in sharing ideas on how to mount 
>>>> them, I'd be up for it;  I also want to mount it on a helmet or 
>>>> other "rigid" structure, so we can mount other cameras looking in 
>>>> different directions that are in a fixed relationship to the hmd.
>>>>
>>>>
>>>>
>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>>
>>>>> Rod,
>>>>> The Dragonfly looks pretty good, especially if you can really get 
>>>>> it in a 1024 X 768 native resolution. I didn't see a price on the 
>>>>> web site.
>>>>>
>>>>> The iBOT and similar cameras are basically single board devices. I 
>>>>> haven't done it yet, but if I ever find enough student help to 
>>>>> work on it, my plan is to disassemble two iBots and stick them on 
>>>>> an iGlasses SVGA HMD. That gives you 640 X 480 and the price is 
>>>>> right ($80 per camera or less). They still are a bit bulky though, 
>>>>> the board being about 2.5" in diameter.
>>>>>
>>>>> What ever happened to the Canon HMD display with integral cameras 
>>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>>> nice, commercially available way to go, though I assume the 
>>>>> cameras were lower resolution.
>>>>>
>>>>> Thanks
>>>>> Mike Redmond
>>>>> ---
>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>
>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>> mounted displays.
>>>>>>
>>>>>> Has anyone seen anything better in the small size range?
>>>>>>
>>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>>> their super-duper USB2 cameras?
>>>>>>
>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>> better out there.
>>>>>>
>>>>>> Rod.
>>>>>
>

yes indeed.  I'm happy hacking a $100 web cam ... but the DragonFly's 
start to feel like real money. :)

On Thursday, March 13, 2003, at 11:19  PM, Rodney Berry wrote:

> hmmm... when you say "$700 a pop ..." it's a chilling thought. I'll be 
> veeeeeery careful! :O
> r.
>
> Blair MacIntyre wrote:
>
>> Hi Rodney,
>> Good luck with the cables;  I don't imagine I'd ever have the nerve 
>> to do that.  At $700 a pop for the DragonFly's, I'd much rather go in 
>> and solder a bunch of permanent connections (or something!) onto a 
>> $25 hub than risk frying the camera. :)
>> On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:
>>> Hi Blair and all,
>>>
>>> I am keen to try some batteries with a point grey dragonfly camera. 
>>> I am not sure what its minimum happy voltage is though. I am hoping 
>>> to use the nice sony rechargeable 7.5 volt camcorder batteries (same 
>>> as the glasstron and the eyetrek use). worst case, I may have to put 
>>> two in series to get 15 volts. I also intend to modify a cable to 
>>> allow a power supply without using a firewire hub (I don't trust 
>>> them, I have had a demo fall over because of a loose connection at 
>>> the hub).
>>>
>>> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
>>> -> 4pin cable and chop each of them in half. Locate which wires are 
>>> positive and negative of the power supply (sony are usually helpful 
>>> enough to make them the black and white ones) if you use two cables 
>>> by the same manufacturer, then the power wires will be the ones that 
>>> are not present in the 4 pin cable. So the idea is to join all the 
>>> like colored wires from the 4pin and the 6pin cable parts, then run 
>>> the remaining two wires to the power supply.
>>>
>>> Of course I hav not done this yet but, once I get a few paper 
>>> deadlines out of the way, I'll get out my soldering iron and tell 
>>> you how it goes. :)
>>>
>>> rod.
>>>
>>>
>>>
>>> Blair MacIntyre wrote:
>>>
>>>>> The Fire-i does look like a nice option. If you "self power" it, 
>>>>> can you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>>>> Orangelink powered firewire hub to connect it)?
>>>>
>>>> Yes, you can.
>>>>
>>>>> With the daisy chaining, can you power just one Fire-I with the 6 
>>>>> to 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>>>>
>>>> I don't know, never tried.  I think it might be possible, though.
>>>>
>>>>> And can the power be supplied by a battery pack for portability?
>>>>
>>>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>>>> we use camcorder batteries with a custom cable.
>>>>
>>>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>>>> respect they are probably similar.
>>>>
>>>> They are, I think...
>>>>
>>>>>
>>>>> Thanks for the info...
>>>>> Mike
>>>>> ---
>>>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>>>
>>>>>> The Fire-i cameras seem (to me) to be better quality than the 
>>>>>> iBot (and other similar ones).  The price is about the same.
>>>>>>
>>>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>>>> with the very same intention (putting a pair of them on the 
>>>>>> front).   If anyone else is interested in sharing ideas on how to 
>>>>>> mount them, I'd be up for it;  I also want to mount it on a 
>>>>>> helmet or other "rigid" structure, so we can mount other cameras 
>>>>>> looking in different directions that are in a fixed relationship 
>>>>>> to the hmd.
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond 
>>>>>> wrote:
>>>>>>
>>>>>>> Rod,
>>>>>>> The Dragonfly looks pretty good, especially if you can really 
>>>>>>> get it in a 1024 X 768 native resolution. I didn't see a price 
>>>>>>> on the web site.
>>>>>>>
>>>>>>> The iBOT and similar cameras are basically single board devices. 
>>>>>>> I haven't done it yet, but if I ever find enough student help to 
>>>>>>> work on it, my plan is to disassemble two iBots and stick them 
>>>>>>> on an iGlasses SVGA HMD. That gives you 640 X 480 and the price 
>>>>>>> is right ($80 per camera or less). They still are a bit bulky 
>>>>>>> though, the board being about 2.5" in diameter.
>>>>>>>
>>>>>>> What ever happened to the Canon HMD display with integral 
>>>>>>> cameras that was demonstrated at previous Siggraphs. That seemed 
>>>>>>> like a nice, commercially available way to go, though I assume 
>>>>>>> the cameras were lower resolution.
>>>>>>>
>>>>>>> Thanks
>>>>>>> Mike Redmond
>>>>>>> ---
>>>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>>>
>>>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>>>> mounted displays.
>>>>>>>>
>>>>>>>> Has anyone seen anything better in the small size range?
>>>>>>>>
>>>>>>>> did anyone manage to get a real price out of silicon concepts 
>>>>>>>> for their super-duper USB2 cameras?
>>>>>>>>
>>>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>>>> better out there.
>>>>>>>>
>>>>>>>> Rod.
>>>>>>>
>>>>>>>
>>>
>

yes indeed.  I'm happy hacking a $100 web cam ... but the DragonFly's 
start to feel like real money. :)

On Thursday, March 13, 2003, at 11:19  PM, Rodney Berry wrote:

> hmmm... when you say "$700 a pop ..." it's a chilling thought. I'll be 
> veeeeeery careful! :O
> r.
>
> Blair MacIntyre wrote:
>
>> Hi Rodney,
>> Good luck with the cables;  I don't imagine I'd ever have the nerve 
>> to do that.  At $700 a pop for the DragonFly's, I'd much rather go in 
>> and solder a bunch of permanent connections (or something!) onto a 
>> $25 hub than risk frying the camera. :)
>> On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:
>>> Hi Blair and all,
>>>
>>> I am keen to try some batteries with a point grey dragonfly camera. 
>>> I am not sure what its minimum happy voltage is though. I am hoping 
>>> to use the nice sony rechargeable 7.5 volt camcorder batteries (same 
>>> as the glasstron and the eyetrek use). worst case, I may have to put 
>>> two in series to get 15 volts. I also intend to modify a cable to 
>>> allow a power supply without using a firewire hub (I don't trust 
>>> them, I have had a demo fall over because of a loose connection at 
>>> the hub).
>>>
>>> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
>>> -> 4pin cable and chop each of them in half. Locate which wires are 
>>> positive and negative of the power supply (sony are usually helpful 
>>> enough to make them the black and white ones) if you use two cables 
>>> by the same manufacturer, then the power wires will be the ones that 
>>> are not present in the 4 pin cable. So the idea is to join all the 
>>> like colored wires from the 4pin and the 6pin cable parts, then run 
>>> the remaining two wires to the power supply.
>>>
>>> Of course I hav not done this yet but, once I get a few paper 
>>> deadlines out of the way, I'll get out my soldering iron and tell 
>>> you how it goes. :)
>>>
>>> rod.
>>>
>>>
>>>
>>> Blair MacIntyre wrote:
>>>
>>>>> The Fire-i does look like a nice option. If you "self power" it, 
>>>>> can you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>>>> Orangelink powered firewire hub to connect it)?
>>>>
>>>> Yes, you can.
>>>>
>>>>> With the daisy chaining, can you power just one Fire-I with the 6 
>>>>> to 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>>>>
>>>> I don't know, never tried.  I think it might be possible, though.
>>>>
>>>>> And can the power be supplied by a battery pack for portability?
>>>>
>>>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>>>> we use camcorder batteries with a custom cable.
>>>>
>>>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>>>> respect they are probably similar.
>>>>
>>>> They are, I think...
>>>>
>>>>>
>>>>> Thanks for the info...
>>>>> Mike
>>>>> ---
>>>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>>>
>>>>>> The Fire-i cameras seem (to me) to be better quality than the 
>>>>>> iBot (and other similar ones).  The price is about the same.
>>>>>>
>>>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>>>> with the very same intention (putting a pair of them on the 
>>>>>> front).   If anyone else is interested in sharing ideas on how to 
>>>>>> mount them, I'd be up for it;  I also want to mount it on a 
>>>>>> helmet or other "rigid" structure, so we can mount other cameras 
>>>>>> looking in different directions that are in a fixed relationship 
>>>>>> to the hmd.
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond 
>>>>>> wrote:
>>>>>>
>>>>>>> Rod,
>>>>>>> The Dragonfly looks pretty good, especially if you can really 
>>>>>>> get it in a 1024 X 768 native resolution. I didn't see a price 
>>>>>>> on the web site.
>>>>>>>
>>>>>>> The iBOT and similar cameras are basically single board devices. 
>>>>>>> I haven't done it yet, but if I ever find enough student help to 
>>>>>>> work on it, my plan is to disassemble two iBots and stick them 
>>>>>>> on an iGlasses SVGA HMD. That gives you 640 X 480 and the price 
>>>>>>> is right ($80 per camera or less). They still are a bit bulky 
>>>>>>> though, the board being about 2.5" in diameter.
>>>>>>>
>>>>>>> What ever happened to the Canon HMD display with integral 
>>>>>>> cameras that was demonstrated at previous Siggraphs. That seemed 
>>>>>>> like a nice, commercially available way to go, though I assume 
>>>>>>> the cameras were lower resolution.
>>>>>>>
>>>>>>> Thanks
>>>>>>> Mike Redmond
>>>>>>> ---
>>>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>>>
>>>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>>>> mounted displays.
>>>>>>>>
>>>>>>>> Has anyone seen anything better in the small size range?
>>>>>>>>
>>>>>>>> did anyone manage to get a real price out of silicon concepts 
>>>>>>>> for their super-duper USB2 cameras?
>>>>>>>>
>>>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>>>> better out there.
>>>>>>>>
>>>>>>>> Rod.
>>>>>>>
>>>>>>>
>>>
>

Hi Blair and all,

I am keen to try some batteries with a point grey dragonfly camera. I am 
not sure what its minimum happy voltage is though. I am hoping to use 
the nice sony rechargeable 7.5 volt camcorder batteries (same as the 
glasstron and the eyetrek use). worst case, I may have to put two in 
series to get 15 volts. I also intend to modify a cable to allow a power 
supply without using a firewire hub (I don't trust them, I have had a 
demo fall over because of a loose connection at the hub).

For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin -> 
4pin cable and chop each of them in half. Locate which wires are 
positive and negative of the power supply (sony are usually helpful 
enough to make them the black and white ones) if you use two cables by 
the same manufacturer, then the power wires will be the ones that are 
not present in the 4 pin cable. So the idea is to join all the like 
colored wires from the 4pin and the 6pin cable parts, then run the 
remaining two wires to the power supply.

Of course I hav not done this yet but, once I get a few paper deadlines 
out of the way, I'll get out my soldering iron and tell you how it goes. :)

rod.



Blair MacIntyre wrote:

>> The Fire-i does look like a nice option. If you "self power" it, can 
>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba Satellite 
>> has a 4 wire 1394 connector...I now need to use an Orangelink powered 
>> firewire hub to connect it)?
> 
> 
> Yes, you can.
> 
>> With the daisy chaining, can you power just one Fire-I with the 6 to 4 
>> wire cable and then plug a seconf Fire-i via a 6 wire?
> 
> 
> I don't know, never tried.  I think it might be possible, though.
> 
>> And can the power be supplied by a battery pack for portability?
> 
> 
> Yes, definitely.  We do that.  It accepts a wide range of power, so we 
> use camcorder batteries with a custom cable.
> 
>> Is the lens/distortion any better than the i_Bot? I expect in that 
>> respect they are probably similar.
> 
> 
> They are, I think...
> 
> 
>>
>> Thanks for the info...
>> Mike
>> ---
>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>
>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>> (and other similar ones).  The price is about the same.
>>>
>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, with 
>>> the very same intention (putting a pair of them on the front).   If 
>>> anyone else is interested in sharing ideas on how to mount them, I'd 
>>> be up for it;  I also want to mount it on a helmet or other "rigid" 
>>> structure, so we can mount other cameras looking in different 
>>> directions that are in a fixed relationship to the hmd.
>>>
>>>
>>>
>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>
>>>> Rod,
>>>> The Dragonfly looks pretty good, especially if you can really get it 
>>>> in a 1024 X 768 native resolution. I didn't see a price on the web 
>>>> site.
>>>>
>>>> The iBOT and similar cameras are basically single board devices. I 
>>>> haven't done it yet, but if I ever find enough student help to work 
>>>> on it, my plan is to disassemble two iBots and stick them on an 
>>>> iGlasses SVGA HMD. That gives you 640 X 480 and the price is right 
>>>> ($80 per camera or less). They still are a bit bulky though, the 
>>>> board being about 2.5" in diameter.
>>>>
>>>> What ever happened to the Canon HMD display with integral cameras 
>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>> nice, commercially available way to go, though I assume the cameras 
>>>> were lower resolution.
>>>>
>>>> Thanks
>>>> Mike Redmond
>>>> ---
>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>
>>>>> currently I am using Point Grey Dragonfly cameras with head mounted 
>>>>> displays.
>>>>>
>>>>> Has anyone seen anything better in the small size range?
>>>>>
>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>> their super-duper USB2 cameras?
>>>>>
>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>> better out there.
>>>>>
>>>>> Rod.
>>>>
> 
> 
> 

Hi Blair and all,

I am keen to try some batteries with a point grey dragonfly camera. I am 
not sure what its minimum happy voltage is though. I am hoping to use 
the nice sony rechargeable 7.5 volt camcorder batteries (same as the 
glasstron and the eyetrek use). worst case, I may have to put two in 
series to get 15 volts. I also intend to modify a cable to allow a power 
supply without using a firewire hub (I don't trust them, I have had a 
demo fall over because of a loose connection at the hub).

For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin -> 
4pin cable and chop each of them in half. Locate which wires are 
positive and negative of the power supply (sony are usually helpful 
enough to make them the black and white ones) if you use two cables by 
the same manufacturer, then the power wires will be the ones that are 
not present in the 4 pin cable. So the idea is to join all the like 
colored wires from the 4pin and the 6pin cable parts, then run the 
remaining two wires to the power supply.

Of course I hav not done this yet but, once I get a few paper deadlines 
out of the way, I'll get out my soldering iron and tell you how it goes. :)

rod.



Blair MacIntyre wrote:

>> The Fire-i does look like a nice option. If you "self power" it, can 
>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba Satellite 
>> has a 4 wire 1394 connector...I now need to use an Orangelink powered 
>> firewire hub to connect it)?
> 
> 
> Yes, you can.
> 
>> With the daisy chaining, can you power just one Fire-I with the 6 to 4 
>> wire cable and then plug a seconf Fire-i via a 6 wire?
> 
> 
> I don't know, never tried.  I think it might be possible, though.
> 
>> And can the power be supplied by a battery pack for portability?
> 
> 
> Yes, definitely.  We do that.  It accepts a wide range of power, so we 
> use camcorder batteries with a custom cable.
> 
>> Is the lens/distortion any better than the i_Bot? I expect in that 
>> respect they are probably similar.
> 
> 
> They are, I think...
> 
> 
>>
>> Thanks for the info...
>> Mike
>> ---
>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>
>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>> (and other similar ones).  The price is about the same.
>>>
>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, with 
>>> the very same intention (putting a pair of them on the front).   If 
>>> anyone else is interested in sharing ideas on how to mount them, I'd 
>>> be up for it;  I also want to mount it on a helmet or other "rigid" 
>>> structure, so we can mount other cameras looking in different 
>>> directions that are in a fixed relationship to the hmd.
>>>
>>>
>>>
>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>
>>>> Rod,
>>>> The Dragonfly looks pretty good, especially if you can really get it 
>>>> in a 1024 X 768 native resolution. I didn't see a price on the web 
>>>> site.
>>>>
>>>> The iBOT and similar cameras are basically single board devices. I 
>>>> haven't done it yet, but if I ever find enough student help to work 
>>>> on it, my plan is to disassemble two iBots and stick them on an 
>>>> iGlasses SVGA HMD. That gives you 640 X 480 and the price is right 
>>>> ($80 per camera or less). They still are a bit bulky though, the 
>>>> board being about 2.5" in diameter.
>>>>
>>>> What ever happened to the Canon HMD display with integral cameras 
>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>> nice, commercially available way to go, though I assume the cameras 
>>>> were lower resolution.
>>>>
>>>> Thanks
>>>> Mike Redmond
>>>> ---
>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>
>>>>> currently I am using Point Grey Dragonfly cameras with head mounted 
>>>>> displays.
>>>>>
>>>>> Has anyone seen anything better in the small size range?
>>>>>
>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>> their super-duper USB2 cameras?
>>>>>
>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>> better out there.
>>>>>
>>>>> Rod.
>>>>
> 
> 
> 

hmmm... when you say "$700 a pop ..." it's a chilling thought. I'll be 
veeeeeery careful! :O
r.

Blair MacIntyre wrote:

> Hi Rodney,
> 
> Good luck with the cables;  I don't imagine I'd ever have the nerve to 
> do that.  At $700 a pop for the DragonFly's, I'd much rather go in and 
> solder a bunch of permanent connections (or something!) onto a $25 hub 
> than risk frying the camera. :)
> 
> 
> On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:
> 
>> Hi Blair and all,
>>
>> I am keen to try some batteries with a point grey dragonfly camera. I 
>> am not sure what its minimum happy voltage is though. I am hoping to 
>> use the nice sony rechargeable 7.5 volt camcorder batteries (same as 
>> the glasstron and the eyetrek use). worst case, I may have to put two 
>> in series to get 15 volts. I also intend to modify a cable to allow a 
>> power supply without using a firewire hub (I don't trust them, I have 
>> had a demo fall over because of a loose connection at the hub).
>>
>> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
>> -> 4pin cable and chop each of them in half. Locate which wires are 
>> positive and negative of the power supply (sony are usually helpful 
>> enough to make them the black and white ones) if you use two cables by 
>> the same manufacturer, then the power wires will be the ones that are 
>> not present in the 4 pin cable. So the idea is to join all the like 
>> colored wires from the 4pin and the 6pin cable parts, then run the 
>> remaining two wires to the power supply.
>>
>> Of course I hav not done this yet but, once I get a few paper 
>> deadlines out of the way, I'll get out my soldering iron and tell you 
>> how it goes. :)
>>
>> rod.
>>
>>
>>
>> Blair MacIntyre wrote:
>>
>>>> The Fire-i does look like a nice option. If you "self power" it, can 
>>>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>>> Orangelink powered firewire hub to connect it)?
>>>
>>> Yes, you can.
>>>
>>>> With the daisy chaining, can you power just one Fire-I with the 6 to 
>>>> 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>>>
>>> I don't know, never tried.  I think it might be possible, though.
>>>
>>>> And can the power be supplied by a battery pack for portability?
>>>
>>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>>> we use camcorder batteries with a custom cable.
>>>
>>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>>> respect they are probably similar.
>>>
>>> They are, I think...
>>>
>>>>
>>>> Thanks for the info...
>>>> Mike
>>>> ---
>>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>>
>>>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>>>> (and other similar ones).  The price is about the same.
>>>>>
>>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>>> with the very same intention (putting a pair of them on the front). 
>>>>>   If anyone else is interested in sharing ideas on how to mount 
>>>>> them, I'd be up for it;  I also want to mount it on a helmet or 
>>>>> other "rigid" structure, so we can mount other cameras looking in 
>>>>> different directions that are in a fixed relationship to the hmd.
>>>>>
>>>>>
>>>>>
>>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>>>
>>>>>> Rod,
>>>>>> The Dragonfly looks pretty good, especially if you can really get 
>>>>>> it in a 1024 X 768 native resolution. I didn't see a price on the 
>>>>>> web site.
>>>>>>
>>>>>> The iBOT and similar cameras are basically single board devices. I 
>>>>>> haven't done it yet, but if I ever find enough student help to 
>>>>>> work on it, my plan is to disassemble two iBots and stick them on 
>>>>>> an iGlasses SVGA HMD. That gives you 640 X 480 and the price is 
>>>>>> right ($80 per camera or less). They still are a bit bulky though, 
>>>>>> the board being about 2.5" in diameter.
>>>>>>
>>>>>> What ever happened to the Canon HMD display with integral cameras 
>>>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>>>> nice, commercially available way to go, though I assume the 
>>>>>> cameras were lower resolution.
>>>>>>
>>>>>> Thanks
>>>>>> Mike Redmond
>>>>>> ---
>>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>>
>>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>>> mounted displays.
>>>>>>>
>>>>>>> Has anyone seen anything better in the small size range?
>>>>>>>
>>>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>>>> their super-duper USB2 cameras?
>>>>>>>
>>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>>> better out there.
>>>>>>>
>>>>>>> Rod.
>>>>>>
>>>>>>
>>
> 
> 
> 

hmmm... when you say "$700 a pop ..." it's a chilling thought. I'll be 
veeeeeery careful! :O
r.

Blair MacIntyre wrote:

> Hi Rodney,
> 
> Good luck with the cables;  I don't imagine I'd ever have the nerve to 
> do that.  At $700 a pop for the DragonFly's, I'd much rather go in and 
> solder a bunch of permanent connections (or something!) onto a $25 hub 
> than risk frying the camera. :)
> 
> 
> On Thursday, March 13, 2003, at 08:58  PM, Rodney Berry wrote:
> 
>> Hi Blair and all,
>>
>> I am keen to try some batteries with a point grey dragonfly camera. I 
>> am not sure what its minimum happy voltage is though. I am hoping to 
>> use the nice sony rechargeable 7.5 volt camcorder batteries (same as 
>> the glasstron and the eyetrek use). worst case, I may have to put two 
>> in series to get 15 volts. I also intend to modify a cable to allow a 
>> power supply without using a firewire hub (I don't trust them, I have 
>> had a demo fall over because of a loose connection at the hub).
>>
>> For the cable, the basic idea is to get a 6pin -> 6pin cable, a 4pin 
>> -> 4pin cable and chop each of them in half. Locate which wires are 
>> positive and negative of the power supply (sony are usually helpful 
>> enough to make them the black and white ones) if you use two cables by 
>> the same manufacturer, then the power wires will be the ones that are 
>> not present in the 4 pin cable. So the idea is to join all the like 
>> colored wires from the 4pin and the 6pin cable parts, then run the 
>> remaining two wires to the power supply.
>>
>> Of course I hav not done this yet but, once I get a few paper 
>> deadlines out of the way, I'll get out my soldering iron and tell you 
>> how it goes. :)
>>
>> rod.
>>
>>
>>
>> Blair MacIntyre wrote:
>>
>>>> The Fire-i does look like a nice option. If you "self power" it, can 
>>>> you directly use a 6 to 4 wire cable to a laptop (my Toshiba 
>>>> Satellite has a 4 wire 1394 connector...I now need to use an 
>>>> Orangelink powered firewire hub to connect it)?
>>>
>>> Yes, you can.
>>>
>>>> With the daisy chaining, can you power just one Fire-I with the 6 to 
>>>> 4 wire cable and then plug a seconf Fire-i via a 6 wire?
>>>
>>> I don't know, never tried.  I think it might be possible, though.
>>>
>>>> And can the power be supplied by a battery pack for portability?
>>>
>>> Yes, definitely.  We do that.  It accepts a wide range of power, so 
>>> we use camcorder batteries with a custom cable.
>>>
>>>> Is the lens/distortion any better than the i_Bot? I expect in that 
>>>> respect they are probably similar.
>>>
>>> They are, I think...
>>>
>>>>
>>>> Thanks for the info...
>>>> Mike
>>>> ---
>>>> At 10:18 AM 1/23/2003 -0500, Blair MacIntyre wrote:
>>>>
>>>>> The Fire-i cameras seem (to me) to be better quality than the iBot 
>>>>> (and other similar ones).  The price is about the same.
>>>>>
>>>>> I have bought a pile, and have a few of the iGlasses SVGA HMDs, 
>>>>> with the very same intention (putting a pair of them on the front). 
>>>>>   If anyone else is interested in sharing ideas on how to mount 
>>>>> them, I'd be up for it;  I also want to mount it on a helmet or 
>>>>> other "rigid" structure, so we can mount other cameras looking in 
>>>>> different directions that are in a fixed relationship to the hmd.
>>>>>
>>>>>
>>>>>
>>>>> On Thursday, January 23, 2003, at 10:08  AM, Michael Redmond wrote:
>>>>>
>>>>>> Rod,
>>>>>> The Dragonfly looks pretty good, especially if you can really get 
>>>>>> it in a 1024 X 768 native resolution. I didn't see a price on the 
>>>>>> web site.
>>>>>>
>>>>>> The iBOT and similar cameras are basically single board devices. I 
>>>>>> haven't done it yet, but if I ever find enough student help to 
>>>>>> work on it, my plan is to disassemble two iBots and stick them on 
>>>>>> an iGlasses SVGA HMD. That gives you 640 X 480 and the price is 
>>>>>> right ($80 per camera or less). They still are a bit bulky though, 
>>>>>> the board being about 2.5" in diameter.
>>>>>>
>>>>>> What ever happened to the Canon HMD display with integral cameras 
>>>>>> that was demonstrated at previous Siggraphs. That seemed like a 
>>>>>> nice, commercially available way to go, though I assume the 
>>>>>> cameras were lower resolution.
>>>>>>
>>>>>> Thanks
>>>>>> Mike Redmond
>>>>>> ---
>>>>>> At 01:12 PM 1/23/2003 +0900, Rodney Berry wrote:
>>>>>>
>>>>>>> currently I am using Point Grey Dragonfly cameras with head 
>>>>>>> mounted displays.
>>>>>>>
>>>>>>> Has anyone seen anything better in the small size range?
>>>>>>>
>>>>>>> did anyone manage to get a real price out of silicon concepts for 
>>>>>>> their super-duper USB2 cameras?
>>>>>>>
>>>>>>> I will probably get another dragonfly or two if there's nothing 
>>>>>>> better out there.
>>>>>>>
>>>>>>> Rod.
>>>>>>
>>>>>>
>>
> 
> 
>