Yahoo usa sex - Updating boot camp 2 1
) or certain windows with a lining to stop incoming heat, or wall construction including metal, you may still need an outdoor antenna, and almost certainly if you live in a basement!
I bought an attractive blue case and 5 V, 2 A power-supply from Mod My Pi.
You can see the Ethernet lead on the left, and the 4 GB SD card with the operating system on the right, together with the micro-USB power lead.
heavy rain - it's possible that a layer of snow could attenuate the signal enough to stop the GPS receiving enough signal.
Monitoring performance may help you spot these problems.
Note: these graphs are not all to the same vertical scale!
The resulting performance is good, but it will depend on both the loading of the link between me and the ISP, and the general load on the ISP's network and the general Internet.As an experiment, I purchased one of the low-cost credit-card-size Raspberry Pi computers, and have configured it to run NTP (Network Time Protocol).I have also used this board with a GPS receiver with pulse per second (PPS) output to make a stratum-1 NTP server, but as I know little of Linux, it has taken some time to achieve this aim!Next, I note a couple of problems I had with the first GPS receiver I tried, and how I cured those with a different GPS receiver to produce a stratum-1 NTP server consuming about 4 watts.The easiest approach with good performance is described here.I've added a second graph with a /- 500 microsecond scale to show any larger excursions.# Drift file to remember clock rate across restarts driftfile /var/lib/ntp/ntp.drift # Servers server 192.168.0.3 minpoll 5 maxpoll 5 iburst prefer server 192.168.0.2 minpoll 5 maxpoll 5 iburst server 192.168.0.7 minpoll 5 maxpoll 5 iburst pool minpoll 10 iburst Much better results are obtained using a Trimble Resolution SMT GPS module, with its PPS pin connected to the GPIO 24 pin for a kernel-mode "ATOM" ref-clock.