Date: Sat, 23 Dec 2017 18:37:29 +0100 From: Hans Petter Selasky <hps@selasky.org> To: bob prohaska <fbsd@www.zefox.net>, Bob Bishop <rb@gid.co.uk> Cc: freebsd-arm@freebsd.org Subject: Re: Disapearing pl2303 usb serial adapter on rpi2 Message-ID: <798971d6-54f3-0453-6393-daa79fffd552@selasky.org> In-Reply-To: <20171223173152.GA25961@www.zefox.net> References: <20171220170244.GA16029@www.zefox.net> <a312e6db-20ac-e12e-207e-1f0017cf8cad@gmail.com> <20171221161120.GA20324@www.zefox.net> <dfc17d98-a839-0ab9-2d1b-c47fe26be21e@selasky.org> <20171222041657.GA21799@www.zefox.net> <20171222173052.GA23984@www.zefox.net> <96d7cc41-33bf-1006-54a3-1cc8d9570fd2@selasky.org> <20171223001819.GB24362@www.zefox.net> <F30A5C4C-E2F4-411E-8BAC-8356C1B985E8@gid.co.uk> <20171223173152.GA25961@www.zefox.net>
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On 12/23/17 18:31, bob prohaska wrote: > The big mystery is the USB flash drive; I can't find any specs on > power consumption, the only measure is a "touch test", which reveals > the drive is lukewarm to the touch with a make session running in > /usr/ports. I'd guess it's around half a watt, but that's only a guess. > However, there has so far been no sign of misbehavior from the USB > flash drive. Idea: Cut a USB cable, reconnect all the wires except the red one, and put a multimeter capable of measuring mA's between. --HPS
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