Webcam problem

vahliton

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Hi all, I need to place a logitech webcam (USB) 15m away from my desktop. What are the options I have to do that?

TIA
 

Trans-Am

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Hi all, I need to place a logitech webcam (USB) 15m away from my desktop. What are the options I have to do that?

TIA
USB extension cable?

Sent from A universe Where pink PWNED everything using GAGT
 

alamakazim

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Yes it may have distance limitation

There are some cables have external socket for power
 

wwenze

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5 meters is the maximum USB cable. You can get further by connecting USB hubs serially (maximum of 5 hubs chained this way). You can't just use USB extension cables due to timing issues.

From the USB FAQ:

Q1: How long of a cable can I use to connect my device?
A1: In practice, the USB specification limits the length of a cable between full speed devices to 5 meters (a little under 16 feet 5 inches). For a low speed device the limit is 3 meters (9 feet 10 inches).

Q2: Why can't I use a cable longer than 3 or 5m?
A2: USB's electrical design doesn't allow it. When USB was designed, a decision was made to handle the propagation of electromagnetic fields on USB data lines in a way that limited the maximum length of a USB cable to something in the range of 4m. This method has a number of advantages and, since USB is intended for a desktop environment, the range limitations were deemed acceptable. If you're familiar with transmission line theory and want more detail on this topic, take a look at the USB signals section of the developers FAQ.

Q3: How far away from a PC can I put a USB device?
A3: With the maximum of 5 hubs connected with 5m cables and a 5m cable going to your full speed device, this will give you 30m of cable (see section 7.1.19 for details). With a low speed device, you will be able to get a range up to 27m, depending on how long the device's cable is. With a straightforward cable route, you will probably be able to reach out 25m or so from the PC.

Q4: I need to put a USB device X distance from my PC. What do I do?
A4: If X is less than 25m or so (see previous question), buy a bunch of hubs and connect them serially with 5m cables. If you need to go farther than that, put another PC, or maybe a laptop, out where you need the device to be and network it with the first PC using something that's intended to be a long-range connection, such as Ethernet or RS-485. If you need to use nothing but USB, consider using USB based Ethernet adapters to hook the PCs together.

https://superuser.com/questions/64744/maximum-length-of-a-usb-cable
 

vahliton

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https://m.media-amazon.com/images/I/51cPXnAKELL._SR500,500_.jpg

found the solution to my problem at sls with the above item.

however, some of the ethernet cables i have when connected aren't able to detect the webcam on my desktop while some others can. it has nothing to do with cable length as one of my 15m cable is able to get it connected while a 1m one can't.

anyone has any idea this may be so? quality of the cable? or are there different types of ethernet cables?

the 15m cable that get the connection is daiyo cp2530 utp cat6 patch cord (bought at challenger for 40 bucks, damn expensive). the ones that cannot connect are random cables i found at home and one that i bought at sls that's suppose to be cat6e ($14).
 
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