I connected up to 16 Joysticks via 2 D-link USB hubs
in cascade with and with an USB/ethernet/USB
estension to reach 50m cable length.
Adding 3m USB extension between Joysticks and hub
and 5m USB extension between 1st and 2nd USB hub,
and, against my expectations it worked fine!

(all tha data is collected with maxMSP's hi, and
i didn't check latency and i must admit that
this is no hard real time but OK to play some music
with 20 people and that's all is was about :-)

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Size: 1715 bytes
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Url : http://lists.puredata.info/pipermail/pd-list/attachments/20051224/2518ff28/controller-0001.tgz

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Message: 2
Date: Sat, 24 Dec 2005 10:03:02 -0500
From: Marc Lavall?e
Subject: Re: [PD] Connection with sensors - new devices?
To: pd-list@iem.at
Message-ID: <200512241003.03912.marc@hacklava.net>
Content-Type: text/plain; charset="iso-8859-1"

Le 23 Décembre 2005 14:12, Hans-Christoph Steiner a écrit :
> According to spec, 10BaseT has a maximum cable length of 100m. USB 1.0
> spec says 5m. I've used 100BaseT on cables well over 100m, so that
> spec is quite conservative. I've heard about people having quite a few
> troubles trying to get USB up to 20m.
>
> Plus you can get a 300m spool of CAT5 for US$40. Ethernet is really
> far better than USB if you want to go for long cable lengths.

Here's a few USB extension solutions, but they are expensive:
http://www.usbgear.com/USB-Extenders.html
http://www.everythingusb.com/hardware/USB_distance_extension/
http://www.cablestogo.com/product.asp?cat_id=201&sku=29341
http://www.icron.com/products/usb/usb_products.php
--
Marc



------------------------------

Message: 3
Date: Sat, 24 Dec 2005 16:27:40 +0100
From: Christian Klippel
Subject: Re: [PD] Connection with sensors - new devices?
To: pd-list@iem.at
Message-ID: <200512241627.40630.ck@mamalala.de>
Content-Type: text/plain; charset="iso-8859-1"

hi all,

Am Freitag 23 Dezember 2005 20:12 schrieb Hans-Christoph Steiner:
[...snip...]
>
> According to spec, 10BaseT has a maximum cable length of 100m. USB 1.0
> spec says 5m. I've used 100BaseT on cables well over 100m, so that
> spec is quite conservative. I've heard about people having quite a few
> troubles trying to get USB up to 20m.
>

yes, its true that usb cant extend that long with just a cable, also, the
maximum length is _very_ dependant on the connected device. here i have a 5
meter cable, no problems. also, usb hubs are really cheap.... but for sure,
adding hubs adds latency as well .....


> Plus you can get a 300m spool of CAT5 for US$40. Ethernet is really
> far better than USB if you want to go for long cable lengths.
>

thats right. im just curious about the latency i can get, but we will see....