For the minimum offset, I made NTP poll the local servers at 32 (25) second intervals, and did not allow that to drift upwards towards the 1024 seconds maximum interval that NTP would reach left to its own devices. .
Raspberry Pi #1 512 MB, Linux/3.6.11 Kernel-mode PPS sync Adafruit MTK3339 navigation GPS receiver in unheated room Raspberry Pi #3 512 MB, Linux/3.6.11 Kernel-mode PPS sync U-blox 6M navigation GPS receiver in office environment Raspberry Pi #4 512 MB, Linux/3.6.11 Kernel-mode PPS sync U-blox.If your GPS does this, consider adding some sort of battery backup so that the GPS-UTC offset is stored while the unit is down.Installed snmp and configured various mrtg data collectors (optional).You could also use a copy of the development tarball on the l word season 3 episode 1 your own local FTP server. .1.619 -0.078.035 stamsund.PPS.This allows for some power-saving in the GPS receiver. .King Center for the Performing Arts provides a wide variety spss 20 para mac serial of musical, theatrical, and intellectual fare on a year-round basis.# It seems that the -enable-linuxcaps flag may not be required on other Linux variants, # or on the RPi with later versions of Linux with PPS and pps-tools installed.
Red/brown are 5V/0, orange the GPS Tx, and yellow the PPS.The parks and recreation departments of the county and various municipalities, along with private business concerns, operate recreational facilities such as golf courses, racquetball courts, ball fields, skateboard parks, an ice-skating rink, beach and lake-side parks.I would also advise a reboot to ensure that everything has gone as expected.Org minpoll 10 iburst Remember to restart NTP after making the changes. .That ought to be enough for most small homes.I happened to have a 10-pin header which fitted the gpio connector, so these are the connections I chose to make: My cable Raspberry Pi connector Comment GPS module connector Red 5V My unit takes less than 50 mA 1 5V 5V Blue Ground One.Linux versions:.18.6 .18.7-v7 sudo nano /boot/config.I used a resistive divider (not shown) to reduce the level to a nominal.2.Installed the PPS tools (sudo apt-get install pps-tools) Installed the rpi_gpio_ntp program from Folkert van Heusden.