I’ve started on a new project: To learn more about containers. Specifically, Docker and Kubernetes.
To do so I’ve built a small Kubernetes Cluster using four Raspberry Pi 3 B+s (see below). Eventually, I would like to expand it to seven Raspberry Pis.
I’ve been following the instructions created by Alex Ellis.
So far I have the cluster up and running. Now it’s time to do some more reading!
All of my NTP servers are finally up and running! (For real!)
I had been having issues with the Sparkfun Trimble GPS Module and I finally contacted Sparkfun. They responded quickly and knew exactly what the issue was.
Turns out, the width of the pulse on the Pulse-per-second output of the Trimble is too short for the Raspberry Pi 2 to detect.
Sparkfun provided step by step instructions on how to download Trimble’s GPS Configuration software, connect the module to my computer, and reprogram the pulse width. Thank you Sparkfun!
So now I can finally be collecting statistics on all five modules. I’d like to get a least a week of data before beginning comparisons.
Stay tuned for more!
Well I have all five GPS modules connected and powered on!
Continue reading “Sunday Geek Project: NTP Servers”
I’m back from Field Day and the Fourth of July. I finally received my SparkFun Trimble GPS module and have it up and running.
I’m still waiting on the last GPS module, from Uputronics, before I begin comparison testing.
Sorry, No status on the NTP Servers this week. I’ve been at my friend’s place participating in the 2016 American Radio Relay League (ARRL) Field Day.
What is Field Day?
Continue reading “Sunday Geek Project: ARRL Field Day Break”
To setup each Raspberry Pi 2 as a Stratum 1 NTP server I’m following the recipe created by David Taylor. While the recipe is very thorough and complete, I ran into an issue disabling the login prompt on the Raspberry Pi’s serial port under Debian Jessie. No matter what I did the login prompt would always be re-enabled after the Pi rebooted. This resulted in GPSD not starting correctly. Read on to find out how to resolve the issue. Continue reading “Sunday Geek Project: Raspberry Pi NTP Server Recipe”
Here are the different GPS Modules I’m playing with or plan to play with: Continue reading “Sunday Geek Project: The Contenders and Setup”
So today is the day after my youngest son’s high school graduation party. Needing a break, I decided to work on my project to compare different GPS modules’ time keeping ability. So I built three Network Time Protocol (NTP) servers using Raspberry Pi’s and different GPS modules:
As I move from the prototyping stage to the testing phase, I hope to document the process, equipment, and results here.
After 3 years experimenting with Drupal, I have decided to try WordPress for awhile.