Want to make sure that all the devices on your network are using the same time?
Want to maintain the correct time regardless of whether your internet connection is up or down?
Stay tuned and I will show you how to do this with a Raspberry Pi.
sudo apt-get update
sudo apt-get upgrade
—–
Set rpi to my timezone
sudo dpkg-reconfigure tzdata
! Install NTP
sudo apt-get -y install ntp
___
! Enable remote monitoring on RPI NTP
cd /etc
sudo cp ntp.conf ntp-original.conf
sudo nano ntp.conf
Put # in front of this line – restrict -4 default kod notrap nomodify nopeer noquery
Save and exit nano
! Restart NTP
sudo /etc/init.d/ntp restart
____
Sudo nano ntp.conf
Delete individual server lines referencing individual ntp servers
Use pool us.pool.ntp.org iburst to automatically stay in contact with external ntp servers
——-
! Add support for gps antenna
sudo apt-get install gpsd gpsd-clients python-gps
——-
! See where GPS antenna is showing up
sudo lsusb
! Compare this to output after GPS antenna is plugged in
You may need to look at output from this – more /var/log/syslog to see what the device is named
! This command will get the connection started
sudo gpsd /dev/ttyACM0 -n -F /var/run/gpsd.sock
—–
! Check for data coming from GPS Antenna
cgps -s
——
! Verify these changes to ntp.conf
# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
# Drift file to remember clock rate across restarts
driftfile /var/lib/ntp/ntp.drift
# Server from shared memory provided by gpsd
server 127.127.28.0 minpoll 4 maxpoll 4 prefer
fudge 127.127.28.0 time1 0.000 refid SHM stratum 15
!
pool us.pool.ntp.org minpoll 10 iburst
————–
! Get gpsd to auto start on bootup
sudo dpkg-reconfigure gpsd
!
! Passing NTP server info in DHCP
DHCP option 42
!
Cisco IOS
Under ip dhcp pool config
Option 42 ip x.x.x.x
!
! Info on windows dhcp NTP configuration
https://social.technet.microsoft.com/wiki/contents/articles/50924.active-directory-time-synchronization.aspx
⏱️TIMESTAMPS⏱️
0:00 – Intro
0:55 – What we will be covering
1:28 – What is NTP
2:56 – Required items
3:54 – Creating boot SD card
4:31 – Booting RPI
5:10 – Applying RPI updates
7:02 – Wifi configuration
9:14 – GPS antenna configuration
10:30 – GPSC monitoring utility
11:36 – NTP configuration
12:08- GPSd reconfiguration
13:10 – Windows 10 ntp client test
================================================
*** Show Notes, Links and Resources ****
Here are the items mentioned in this video –
CanaKit Raspberry Pi 4 2GB Basic Starter Kit with Fan (2GB RAM)
https://amzn.to/35QBB8I
VK-162 G-Mouse – Remote Mount USB – External GPS Navigation Dongle
https://amzn.to/3dmF9Cz
———————————–
Click on this link to get the
SmartHome Account Creation Checklist
http://eepurl.com/go4fVP
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