[PD] comport + usb hub issue

[Rick Snow]

Thank you Christof and Martin for your advice.  I am using a powered hub
and am powering the components being controlled by the arduinos
separately.  Now I think the whole system is overheating because when I
open the enclosure it seems to work much better.  I am going to try a few
small fans and see if that helps now.  I also now have access to a mac mini
with more usb ports so I might try that as well.  Eventually I'd like to
port it all over to a group of rpis -maybe even 1 for each arduino.  Thanks
again.

Cheers,
Rick



On Tue, Aug 30, 2016 at 10:31 AM, Martin Peach <chakekatzil at gmail.com>
wrote:

> On Mon, Aug 29, 2016 at 10:55 PM, Rick Snow <ricksnow at gmail.com> wrote:
>
>> Howdy list,
>>
>> I am using comport to send messages to three arduinos via osx for an
>> installation.  Almost invariably one of the connections drops after an
>> extended period of time.  It seems that only unplugging and replugging in
>> the usb hub's usb cable will refresh the connection (after sending the
>> connect message again from the patch).  I am running the project on an
>> older macbook pro with osx 10.8.5.  Is this a usb hub problem (radioshack
>> brand) or should I be looking at something else?
>>
>>
> Most laptops don't have a lot of juice in the USB connector so you should
> power the hub separately (although some (e..g. thinkpads) have one USB
> socket that has more power capability). Also if the arduinos are running
> servos or anything that takes a lot of power they should be on their own
> power supply (not USB).
>
> Martin
>
>
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