Well, a DIP-40 isn't exactly tiny either, I'm sure there are some
pretty small 4-port hubs ;-)
I guess once the case is removed the PCB isn't large:
<
http://www.dealextreme.com/productimages/sku_9476_1.jpg>
<
http://www1.dealextreme.com/productimages/sku_2164_3.jpg>
<
http://www.dealextreme.com/productimages/sku_3655_2.jpg>
And when you really don't have any space left inside your project, you
can always mount one of these to the outside with a decorative effect
;-)
<
http://www.dealextreme.com/productimages/sku_10128_3.jpg>
I'd just modify some ready made units, that's what I do when I need a
serial port, just remove the case and SUB-D plug of a USB/RS232
converter and solder it to my circuit boad. I couldn't make it that
cheap even if I wanted - the FTwhatever chip probably costs more than
when I buy a whole converter.
Anyway, have fun, but personally I don't see the need.
ST
On Fri, Jul 31, 2009 at 9:42 AM, David Griffith<dgriffi@...> wrote:
> On Fri, 31 Jul 2009, Stefan Trethan wrote:
>
>> So how is this better than just buying a $2 hub ready made?
>> On Fri, Jul 31, 2009 at 8:32 AM, David Griffith<dgriffi@...> wrote:
>>>
>>> I've been wanting to add downstream USB ports to a few projects for some
>>> time. To deal with this now and for the forseeable future, I decided to
>>> put a 4-port hub on a DIP. The idea is that a so-called hub-on-a-chip
>>> is merged with its support stuff onto a piece of PCB the size of a DIP-32
>>> or probably a DIP-40. To add downstream ports to a design, put this
>>> microhub after the female USB-B jack, then hang your gizmo[1] and female
>>> USB-A jacks off the microhub.
>
> No need to figure out how to shoehorn it into whatever you're making.
>
> --
> David Griffith
> dgriffi@...
> k
>
> [Non-text portions of this message have been removed]
>
>
>
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