geerlingguy / geerlingguy/mini-rack

DIY Atomic Clock mini rack

Open
#315 0 comments 0 reactions 0 assignees View on GitHub
build showcase
Dominant language
No language data
Stars
3.9k
Forks
102
PR merge metrics
No merged PRs in 30d

Description

This rack is an ongoing project, but now that I have 'version beta 1' complete, I thought I'd start documenting it here, for the like 0.2% of us who are time-nuts and want a compact, mobile setup for their clock measurement :)


DIY Atomic Clock mini rack

The equipment in use currently includes (a few of these links are Amazon Affiliate links):

- [NetTimeLogic PPS Analyzer](https://www.nettimelogic.com/tools-pps-analyzer.php)
- [Switchberry](https://github.com/Time-Appliances-Project/Switchberry)
- [N150 Mini PC](https://amzn.to/4wH8OhV)
- [Time Stick](https://github.com/Time-Appliances-Project/TimeStick)
- [JetKVM](https://jetkvm.com)
- [JetKVM PoE Adapter](https://wisdpi.com/products/jet-poe-splitter)
- [JetKVM 3D printed rackmount](https://makerworld.com/en/models/2139891-sg105-sg1005p-jetkvm-left-mounted-10-rack-mount?from=search)
- [Calnex Rb/GPS Timing Reference](https://calnexsol.com/datasheet/rb-gps-reference-source/)
- [Meinberg microSync XS](https://www.meinberg-usa.com/products/microsync-series.htm)
- [GPS Source 4-way splitter](https://www.gpssource.com/collections/splitters/products/s14wi-gps-1x4-wireless-splitter)
- [Netgear GS305P 4-port PoE Switch](https://amzn.to/4nCL1LK)
- [Tupavco 10" Rack PDU 4 outlet](https://amzn.to/4tMSaum)
- [RackMate T2 12U mini rack](https://amzn.to/49hSGcG)
- [Various BNC to SMA cables](https://amzn.to/4dSHcil)

You can see the back side of the rack here, including the power strip, PoE switch, and GPS distribution box. I also have another USB-C power adapter hanging out for the Switchberry; it'd be nice to have a multi-port power hub for USB-C and 12-20V power adapters... that's one part of this build that's particularly messy right now.


Image

I published a short Level 2 Jeff video covering the rack and how I'm using the NetTimeLogic PPS Analyzer to compare and quantify multiple clocks: https://www.youtube.com/watch?v=3BBxCn4mY5Y

Contributor guide

No contributing guide indexed for this repository

Research direction

The issue body documents a completed beta mini-rack with equipment links, photos, and a video, but names no repository file, test, or requested change. Read the issue content and linked media first; there is no stated implementation task or completion criterion for a contributor.

Written by the indexing model from the issue text.

Assessment

Domain
documentation
Issue type
Documentation
Difficulty
1/5
Estimated time
Under an hour
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.