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Discussion of precise time and frequency measurement

Re: [time-nuts] USB problems and solutions - Some what Off Topic

Cash Olsen

Sun, May 31, 2015 4:26 AM

I'm going to transfer most of the USB functions to a Win 7 machine, but
actually want to get a much lower power consumption machine to use for
logging applications. The RPi doesn't seem to have a good reliability
record, so that doesn't seem like the solution.

Thanks time-nuts, what a resource.

Cash Olsen

I'd like to thank time-nuts for all of the information and advice I received on and off list. I have stabilized my situation, I was able remove all of the unused devices in the list (hidden) and now have many new tools / techniques to maintain the USB list. I'm going to transfer most of the USB functions to a Win 7 machine, but actually want to get a much lower power consumption machine to use for logging applications. The RPi doesn't seem to have a good reliability record, so that doesn't seem like the solution. Thanks time-nuts, what a resource. Cash Olsen

David J Taylor

Tue, Jun 2, 2015 8:34 AM

[]
The RPi doesn't seem to have a good reliability record, so that doesn't seem
like the solution.

Thanks time-nuts, what a resource.

Cash Olsen

Very few problems with multiple RPi cards here.

Most of the problem reports I've seen have been from either:

inadequate power supplies. Note that the better ones have a 5.25V 2A
capacity, allowing for some drop in the USB-micro-USB cable, and some people
have been running power-hungry HDs off the USB ports. Two years back the
RPi had rather limited USB power, not so on today's hardware.
SD cards - cheap or not well mounted. The RPi 2 uses a micro-SD card with
a much more secure mounting.

Cheers,
David

SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk

[] The RPi doesn't seem to have a good reliability record, so that doesn't seem like the solution. Thanks time-nuts, what a resource. Cash Olsen _______________________________________________ Very few problems with multiple RPi cards here. Most of the problem reports I've seen have been from either: - inadequate power supplies. Note that the better ones have a 5.25V 2A capacity, allowing for some drop in the USB-micro-USB cable, and some people have been running power-hungry HDs off the USB ports. Two years back the RPi had rather limited USB power, not so on today's hardware. - SD cards - cheap or not well mounted. The RPi 2 uses a micro-SD card with a much more secure mounting. Cheers, David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk