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Home > Archive > Macromedia Flash Server > March 2006 > Multiple cams on hubs
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Multiple cams on hubs
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| Bill Sanders 2006-03-23, 8:47 pm |
| Hello all,
In building multiple-camera apps is there any advice as to USB hubs
or the distance from a computer you can set a camera connected
directly to a hub? Wireless cameras are an obvious answer, but
they're expensive compared to a good wired USB camera. Here's what
I've found so far:
1. A powered hub is way better than an unpowered hub.
I have 4 cameras hooked up to a powered USB hub, and they all work
fine. I have one camera hooked up to an unpowered hub w/ two other
devices not running, and it poops out on a regular basis.
2. Creative cameras come with 2 drivers--one a mid range and the
other a close up. With a single camera you can switch between close-
up and mid-range providing a telephoto effect.
3. With two identical Live Pro Creative cameras, the cameras are
identified as two different ones in the settings and as far as
Camera.get() is concerned. (Is this new to FMS2?) So, it's easy to
switch cameras w/o any special hardware or driver tricks. (I suppose
you could switch to as many as you have connected.) So in addition to
identifying separate drivers, at least with the Creative cameras,
each one can be identified as a unique one for purposes of switching.
Can you do the same thing with Logitech? (I have 3 Logitech cameras
but they're all different w/ a different set of drivers; so I'm not
sure.)
4. Question? : How far away can you place a wired USB Webcam from the
computer on daisy chained or extended USB cable? My Live Pro cameras
come with 6 foot USB cables and my powered Hub can add another 3
feet--so that will take it out 9 feet. However, is there a limit on
the length of the USB cable? Could I get a 12 foot male/female USB
cable and extend the distance of the camera from the computer? A 24
foot cable? (My wireless Logitech goes out 75 feet, but like I said,
those cameras are fairly pricey.)
TIA,
Bill
bill sanders | www.sandlight.com | bloomfield, ct | 860-242-2260
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| |
| Peter Burke 2006-03-23, 8:47 pm |
| Bill Sanders wrote:
> 4. Question? : How far away can you place a wired USB Webcam from the
> computer on daisy chained or extended USB cable? My Live Pro cameras
> come with 6 foot USB cables and my powered Hub can add another 3
> feet--so that will take it out 9 feet. However, is there a limit on the
> length of the USB cable?
depending on your budget, you may want to consider optical USB extenders:
Starting at about $170, you can get 10 meters up to 10000 meter fiber extenders.
look at this link for the "budget" extenders
http://usbstuff.com/longcable.html
and
http://www.opticomm.com/USB-520___151
for the high end version
I am using the 10 meter version very successfully with a digital to analog
converter which works fine at USB 1.1. It gets expensive if your cameras require
USB 2.0 support
Peter
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| |
| Bill Sanders 2006-03-23, 8:47 pm |
| Peter,
Thanks for the information. Unfortunately, I am using the USB 2.0,
but 10 meters is pretty good at that price. I'm checking out those
links....now.
Bill
On Mar 23, 2006, at 10:56 AM, Peter Burke wrote:
> Bill Sanders wrote:
>
>
> depending on your budget, you may want to consider optical USB
> extenders: Starting at about $170, you can get 10 meters up to
> 10000 meter fiber extenders.
>
> look at this link for the "budget" extenders
>
> http://usbstuff.com/longcable.html
>
> and
>
> http://www.opticomm.com/USB-520___151
>
> for the high end version
>
>
> I am using the 10 meter version very successfully with a digital to
> analog converter which works fine at USB 1.1. It gets expensive if
> your cameras require USB 2.0 support
>
> Peter
>
>
> ________________________________________
_______
> FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
>
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.com
bill sanders | www.sandlight.com | bloomfield, ct | 860-242-2260
________________________________________
_______
FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.com
| |
| Jayson K Hanes 2006-03-23, 8:47 pm |
| Nearly 8 years ago I wired an office with 8 cams to 8 dif pc's all USB
with webcam32 when it came out, using jpg push via the net for
viewing...
Anyway.. I did A LOT of experimenting and the furthest I could extend a
usb camera (didn't matter the brand) was about 60FT with CAT5.. I never
tried shielded cable at the time.
I made a custom usb-RJ45 adapter with cable, and never had any issues.
The voltage line loss over cat5 was enough in lengths > 60 ft to make
the cams not power up...=20
-Jayson
> -----Original Message-----
> From: flashcomm-bounces-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org=20
> [mailto:flashcomm-bounces-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org] On Behalf Of=20
> Bill Sanders
> Sent: Thursday, March 23, 2006 6:35 AM
> To: FlashComm Mailing List
> Subject: [FlashComm] Multiple cams on hubs
>=20
> Hello all,
>=20
> In building multiple-camera apps is there any advice as to=20
> USB hubs or the distance from a computer you can set a camera=20
> connected directly to a hub? Wireless cameras are an obvious=20
> answer, but they're expensive compared to a good wired USB=20
> camera. Here's what I've found so far:
>=20
> 1. A powered hub is way better than an unpowered hub.
> I have 4 cameras hooked up to a powered USB hub, and=20
> they all work fine. I have one camera hooked up to an=20
> unpowered hub w/ two other devices not running, and it poops=20
> out on a regular basis.
>=20
> 2. Creative cameras come with 2 drivers--one a mid range and=20
> the other a close up. With a single camera you can switch=20
> between close- up and mid-range providing a telephoto effect.
>=20
> 3. With two identical Live Pro Creative cameras, the cameras=20
> are identified as two different ones in the settings and as far as
> Camera.get() is concerned. (Is this new to FMS2?) So, it's=20
> easy to switch cameras w/o any special hardware or driver=20
> tricks. (I suppose you could switch to as many as you have=20
> connected.) So in addition to identifying separate drivers,=20
> at least with the Creative cameras, each one can be=20
> identified as a unique one for purposes of switching. =20
> Can you do the same thing with Logitech? (I have 3 Logitech=20
> cameras but they're all different w/ a different set of=20
> drivers; so I'm not
> sure.)
>=20
> 4. Question? : How far away can you place a wired USB Webcam=20
> from the computer on daisy chained or extended USB cable? My=20
> Live Pro cameras come with 6 foot USB cables and my powered=20
> Hub can add another 3 feet--so that will take it out 9 feet.=20
> However, is there a limit on the length of the USB cable?=20
> Could I get a 12 foot male/female USB cable and extend the=20
> distance of the camera from the computer? A 24 foot cable?=20
> (My wireless Logitech goes out 75 feet, but like I said,=20
> those cameras are fairly pricey.)
>=20
> TIA,
> Bill
>=20
>=20
>=20
> bill sanders | www.sandlight.com | bloomfield, ct | 860-242-2260
>=20
>=20
> ________________________________________
_______
> FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
>=20
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training=20
> http://www.figleaf.com http://training.figleaf.com
>=20
________________________________________
_______
FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.com
| |
| Bill Sanders 2006-03-23, 8:48 pm |
| Jayson,
Thanks for that. I called a couple of companies and they have some
devices for keeping the power on over both copper and fiber optics.
Very $$$$ though.
Bill
On Mar 23, 2006, at 12:22 PM, Jayson K Hanes wrote:
> Nearly 8 years ago I wired an office with 8 cams to 8 dif pc's all USB
> with webcam32 when it came out, using jpg push via the net for
> viewing...
>
> Anyway.. I did A LOT of experimenting and the furthest I could
> extend a
> usb camera (didn't matter the brand) was about 60FT with CAT5.. I
> never
> tried shielded cable at the time.
>
> I made a custom usb-RJ45 adapter with cable, and never had any issues.
>
> The voltage line loss over cat5 was enough in lengths > 60 ft to make
> the cams not power up...
>
> -Jayson
>
> ________________________________________
_______
> FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
> To change your subscription options or search the archive:
> http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
>
> Brought to you by Fig Leaf Software
> Premier Authorized Adobe Consulting and Training
> http://www.figleaf.com
> http://training.figleaf.com
bill sanders | www.sandlight.com | bloomfield, ct | 860-242-2260
________________________________________
_______
FlashComm-1Ss2GqJETD3yZ38Mhd3e/9ZfFG6BLHNm@public.gmane.org
To change your subscription options or search the archive:
http://chattyfig.figleaf.com/mailman/listinfo/flashcomm
Brought to you by Fig Leaf Software
Premier Authorized Adobe Consulting and Training
http://www.figleaf.com
http://training.figleaf.com
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