High precision computer logger - Revision history

24.237.158.7 at 21:43, 31 January 2016

2016-01-31T21:43:11Z

24.237.158.13 at 20:15, 24 January 2016

2016-01-24T20:15:42Z

24.237.158.13: Created page with " Replace '''ntpd''' with '''chronyd''': * http://chrony.tuxfamily.org/ Then, also add '''gpsd''': * http://www.catb.org/gpsd/gpsd-time-service-howto.html * In addition to gps..."

2016-01-24T20:14:21Z

Created page with " Replace '''ntpd''' with '''chronyd''': * http://chrony.tuxfamily.org/ Then, also add '''gpsd''': * http://www.catb.org/gpsd/gpsd-time-service-howto.html * In addition to gps..."

New page

Replace '''ntpd''' with '''chronyd''':
* http://chrony.tuxfamily.org/
Then, also add '''gpsd''':
* http://www.catb.org/gpsd/gpsd-time-service-howto.html
* In addition to gpsd you will need to modify the default configuration so that the gpsd daemon starts looking for the gps at start up:

<pre>
root@turkey:/etc/default# cat /etc/default/gpsd
# Default settings for the gpsd init script and the hotplug wrapper.

# Start the gpsd daemon automatically at boot time
START_DAEMON="true"

# Use USB hotplugging to add new USB devices automatically to the daemon
USBAUTO="true"

# Devices gpsd should collect to at boot time.
# They need to be read/writeable, either by user gpsd or the group dialout.
DEVICES="/dev/ttyUSB0"

# Other options you want to pass to gpsd
GPSD_OPTIONS="-G -n"
</pre>

← Older revision		Revision as of 21:43, 31 January 2016
Line 27:		Line 27:

	Doing those two things will get you a computer that will keep time with good precision when connected to a gps & unable to access network time for extended periods. NTP works best in always connected environments.		Doing those two things will get you a computer that will keep time with good precision when connected to a gps & unable to access network time for extended periods. NTP works best in always connected environments.
		+
		+	-------------------------------
		+	Nikon Cameras require GPGGA & GPRMC strings @ 4800 baud.

← Older revision		Revision as of 20:15, 24 January 2016
Line 24:		Line 24:
	GPSD_OPTIONS="-G -n"		GPSD_OPTIONS="-G -n"
	</pre>		</pre>
		+
		+
		+	Doing those two things will get you a computer that will keep time with good precision when connected to a gps & unable to access network time for extended periods. NTP works best in always connected environments.