I’ve recently treated myself to a Raspberry Pi to see what all the fuss is about. On first glance, it looks like a cute little box that can do a lot of the stuff a big server can do – albeit without the power.
But for something simple, like a long-planned APRS digipeater, it looks like a viable platform.
One of the first things I discovered is the lack of an on-board hardware clock… which means using Network Time Protocol. So here is my first Raspberry Pi tutorial… installation and configuration of an NTP server.
Installing NTP
Installing NTP is quite straightforward:
pi@ADB-raspberrypi ~ $ sudo apt-get install ntp
The default configuration is OK at this stage, and the service should auto-start. To check the status:
pi@ADB-raspberrypi ~ $ ntpq -p
which should reply with something like:
remote refid st t when poll reach delay offset jitter
==============================================================================
+ns1.nexellent.n 194.242.34.149 2 u 11 128 377 26.191 -1.973 0.248
*time2.ethz.ch .PPS. 1 u 48 128 377 24.004 -1.298 0.157
-ns2.telecom.lt 212.59.3.3 2 u 22 128 377 53.125 0.269 0.213
+ns0.luns.net.uk 157.44.176.4 2 u 16 128 377 15.010 -0.477 0.138
Coming next… interfacing a GPS to provide time-synchronisation and positional data.
