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 <[email protected]> wrote: > On Mon, Aug 29, 2016 at 10:55 PM, Rick Snow <[email protected]> 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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