om> wrote: > > >> For the advocates of RPi solutions, I put about half a dozen in to support >> >> some non mission critical infrastructure about a year ago. We are using >> them >> for for logging, reading QR codes, running a vending machine, kiosk web >> browsers, and similar tasks. In short, nothing requiring heavily lifting. >> >> >> I've been incredibly dissappointed in the results. Well over half of them >> >> have needed replacement and not a one runs reliably. They need rebooting >> at >> intervals from hours to a few tens of days to recover from total lock up. >> >> The problem is not environmental, power or SD cards. > > Do you know what the problem is? > > I know that the RPI has pretty cheap design (like most of these super-cheap > SoC boards) and does suffer from a few problems. The most common one > is under-designed power supply. Together with the ultra-cheap wall-wart > supplies mostly used results in a quite decreased MTBF due to spikes/drops > on the power rails (BTW: soekris suffers from that too, just that a better > wall-wart supply doesn't help). Depending on the environment, in which > those boards are run, overheating might also be a problem. > > Other than that, i am not aware of any software or hardware issues that > would cause the RPI, or any other board, to run unreliably. > > Attila Kinali > -- > < _av500_> phd is easy > < _av500_> getting dsl is hard > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- vbradio.wordpress.com

net> wrote: > I believe someone mentioned a cell phone "time" app. This is an image of > the one I use for my iPhone. It is Emerald Sequoia. > > It queries correct time requests from four different NTP servers then picks > the one with the least amount of response delay I believe. > > Of course when I'm out setting the clock on a Carillon system it has to be > "just" right, doesn't it? > > I have uploaded a couple screen captures here: > > http://hammondorganservice.com/downloads/images/Emerald-Sequoia.jpg > http://hammondorganservice.com/downloads/images/Emerald-Sequoia2.jpg > > > A description of how it works is here: > > https://emeraldsequoia.com/et/index.html > > > > > Don Resor > N6KAW > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. >

com> wrote: > I haven't seen that app in a long time! I got them to add the option > to include a custom NTP server. Great people! > > On my Android phone I use ClockSync < > https://play.google.com/store/apps/details?id=ru.org.amip.ClockSync>. > It has a ton of features especially if your phone is rooted. > > > > -- > Ryan Stoner > > On Sun, Sep 2, 2018, 08:08 D. Resor wrote: > > > I believe someone mentioned a cell phone "time" app. This is an > > image of the one I use for my iPhone. It is Emerald Sequoia. > > > > It queries correct time requests from four different NTP servers > > then picks the one with the least amount of response delay I > > believe. > > > > Of course when I'm out setting the clock on a Carillon system it > > has to be "just" right, doesn't it? > > > > I have uploaded a couple screen captures here: > > > > http://hammondorganservice.com/downloads/images/Emerald-Sequoia.jpg > > http://hammondorganservice.com/downloads/images/Emerald-Sequoia2.jpg > > > > > > A description of how it works is here: > > > > https://emeraldsequoia.com/et/index.html > > > > > > > > > > Don Resor > > N6KAW > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and > follow the instructions there.

brate the main clock that drives the cycle count register. Most PCs crystals are off far enough to be annoying, so one of the main things that ntpd does is reach into the kernel via a side door to tell the kernel the correction for the clock frequency. ntpd calls that drift. It's in log files and/or stored in a file so it can be used on reboot. ntpd can be good enough that you can use the drift as a thermometer. Things get interesting when you want to change the clock frequency to save power. I think some of the early cycle-counter implementations counted actual CPU cycles. I think modern chips count at a fixed rate that may not be the same as the CPU clock frequency. If you want to save more power, you can turn off the CPU clock. Laptops do this when you close the lid. Phones do it on a much finer grain. Then you have to set the clock when you turn the CPU clock back on. I'm not sure of the details in this area. Most systems have a battery backed clock running off a 32 KHz crystal. Typically, they can only be read to a granularity of 1 second. And they aren't drift-corrected, ... -- These are my opinions. I hate spam.

Dear All, Sorry to bother you. I'm new to the USRP field. Currently, I have 2 USRP E310 of which the P/N are 156333C-01L. According to the readme file, I downloaded the img files in the "ettus-e3xx-sg1" folder. But it doesn't work after I burn the img to my new SD card.

The New York Canal System does not open until early May, but that date can slide if waters are high and all the locks can't be opened. On top of that, it is still cold at that time of year. If possible, I would reschedule for June. Can the trip be made in one month. Yes, but you will really have to push. ^From Annapolis to the Erie Canal, 7 days.

. > The teak is laid on top of the fiberglass deck, correct? Usually cored fiberglass. ie: a core material like plywood, foam etc. with fiberglass on the top and bottom. > The deck was at that point in > time sound and solid. What causes the deck, with time, to eventually start to >leak?

So, all I have to do is: - main.scad: include translate([X, Y, Z]) { shpere(); } - vars.scad: X = 1; Y = 2; Z = 3; My python script just have to generate the vars.scad file, with all my maths results, and that's it!

They mux all the channels together. All of this is transmitted as packets. Each channel has a PID assigned in the header of the packet. Your TV or set top box decodes the packets and displays the ones for the channel that you have selected. The decode and encode time at the cable plant is part of this.

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