martinrowan wrote: ↑Wed Sep 12, 2018 7:25 amI'm really pleased to see the comprehensive response to the Register and the repost here. The upcoming blog will hopefully be even more enlightening. With respect to one line segment of the response:This sort of makes sense, with the exception that I (and others) have reported the over-current warnings being triggered without any device being attached to the USB ports and my initial report of the problem was experienced with just a Logitech wireless keyboard/mouse adaptor, which I'd expect to be fairly low current (though I don't have a USB power tester to measure it).jamesh wrote: ↑Tue Sep 11, 2018 2:22 pmWe missed it in product testing because (dumb luck) our heavy-load testing was done on boards with the other brand of switch, and most of our field testers were only using the board to power mice and keyboards, which works fine on all the HAT/Pi pairs we've tested.
So in the release to the field, problems were seen even at zero and low load. Just an observation.
Hi MartinRowan, Rokenroken wrote: Except - I see the overvoltage, with literally nothing connected. The one Pi that I have a hat connected to is entirely independent of anything else. All that it relies on is the network. I mean that, inasmuch as even the sdcard does nothing more than boot, and hand over to an NFS boot.
This is, incidentally, why the issue is not currently a problem to me, but for my other PIs will be.
We are interested in getting hold of devices that are showing the issue with nothing attached to the USB, as this is not something we have seen/replicated. To that end could you contact me via the email@example.com email address so we can have a discussion. Mark email as FAO James Hughes. Thanks.