Lab Notes on ThetaSigma Labs

Hosting a Static Site on GitHub Pages with a Custom Domain

Wed, 17 Jun 2026 19:19:07 -0300

GitHub Pages is a free static hosting service built into every GitHub repository. Combined with a custom domain and a handful of DNS records, you can serve a production site with HTTPS for nothing beyond the cost of the domain name.

This note covers the full path: repo setup, Pages configuration, DNS records, and TLS enforcement.

Prerequisites
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A GitHub account and a repository containing your static site output (HTML/CSS/JS)
A registered domain name managed at any DNS registrar (examples use Porkbun)
gh CLI installed and authenticated (gh auth login)

1. Prepare the repository
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Your repo needs to end up with built HTML at a known location. Two options:

Lab Note: Signing Hugo so macOS Firewall Allows LAN Access to the Dev Server

Wed, 10 Jun 2026 14:30:00 -0300

Overview
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The Hugo dev server worked on localhost but was unreachable on the Mac’s LAN IP (<mac-ip>), even with the correct --bind flag. Root cause: the macOS application firewall identifies apps by code signature, and Homebrew’s hugo binary is shipped completely unsigned — so even an explicit firewall allow rule could not attach to it. Fix: ad-hoc sign the binary.

Lab Note: Docker Registry on Synology NAS with Browse UI

Thu, 04 Jun 2026 00:00:00 -0300

Overview
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A private Docker registry running on the Synology NAS at <nas-ip>, used by the Jenkins CI/CD pipeline to store built images and available for pulling to any LAN machine. Includes the joxit/docker-registry-ui browse interface.

Compose file lives at /volume1/docker/registry/docker-compose.yml on the NAS.

Why This Is Useful
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For CI/CD: Jenkins builds The Moment, pushes the image here, then pulls it on the ARM64 production node (Odroid N2+) to deploy. No GitHub or internet dependency in the build/deploy loop — the pipeline runs entirely on the LAN.

Lab Note: Prusa Buddy3D Camera — Local Snapshot Feasibility

Wed, 03 Jun 2026 11:00:00 -0300

Overview
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Investigation into whether the Prusa Buddy3D Camera can be used to capture print-end snapshots locally via PrusaLink for The Moment print history. Triggered by implementing a camera snapshot feature that correctly handled the API response but produced no images on a real print.

Lab Note: Jenkins Agent Setup — Go, MinGW, and NSSM on Windows

Tue, 02 Jun 2026 00:00:00 -0300

Overview
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Notes for setting up Jenkins build agents across all three lab nodes (Oroid N2+/arm64, Beelink/Windows, MiniMac/macOS). Covers Go installation per platform, MinGW gcc on Windows for CGO builds, and running the Jenkins agent as a persistent Windows service via NSSM.

Installing Go
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Windows — beelink
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winget install -e --id GoLang.Go

Open a new cmd prompt after install (PATH won’t update in the existing window).

Lab Note: NFC Tag Setup for Filament and Location Tracking

Wed, 27 May 2026 19:24:05 -0300

Overview
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This note documents the process for initializing and writing NFC tags for use with The Moment and Prusa Core One filament tracking. It covers the correct tag types, apps required, and the initialization workaround needed for blank NFC-V stickers on iOS.

Tag Types
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Two tag types have been confirmed working:

Docker_dev_vscode_improvements

Sat, 16 May 2026 23:00:13 -0300

docker-compose.dev.yml — added build: context: . so Compose can rebuild the image itself with --build, no separate docker build needed.

.vscode/tasks.json — 5 new tasks added:

Task	What it does
Docker: Build Dev Image	Standalone build + prune dangling
Docker: Start Dev Stack	Start stack using existing local image
Docker: Build and Restart Dev Stack	Primary task — rebuild, restart, prune
Docker: Stop Dev Stack	Bring the whole dev stack down
Docker: Logs	Stream the-moment logs in a dedicated panel

Daily driver: Terminal → Run Task → Docker: Build and Restart Dev Stack. This is the replacement for your manual docker build command — it rebuilds the image, prunes the dangling old one, and restarts the container in one step.

Github_push_and_tag

Sat, 16 May 2026 21:24:05 -0300

Option A — Squash all commits into one before pushing
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git checkout --orphan release
git add -A
git commit -m "Beta_1.0.1"
git branch -D main
git branch -m main
git push origin main --force

This replaces the entire history with a single clean commit.

Option B — GitHub Releases (tag-based, history stays)
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If the goal is just to publish a versioned release ZIP for users to download (not hide commits), use GitHub Releases:

Working_with_claude_and_vscode

Fri, 15 May 2026 01:26:12 -0300

User scope
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~/.claude/settings.json (user scope — applies to all projects)

<project_folder>/.claude/settings.local.json (user scope — applies only to the project_folder)

Why it’s there
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It’s an explicit override you (or /model) set at some point — it is not a default. Without that line, Claude Code picks a model based on your plan/account. With it, every session in every project starts on Opus.

Automate HUGO labnotes

Thu, 14 May 2026 22:43:45 -0300

Use a Shell function (recommended — zero dependencies)
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Add this to ~/.zshrc:

labnote() {
 local slug="${1:-}"
 if [[ -z "$slug" ]]; then
 read "slug?Lab note slug: "
 fi
 slug="${slug// /_}" # spaces → underscores
 (cd ~/code/thetasigma-site && hugo new "lab-notes/${slug}.md" && code "content/lab-notes/${slug}.md")
}

Then labnote thetasigma_labs_setup or just labnote and it prompts you. Opens it in VSCode immediately. This is almost certainly what you want — it’s a 30-second setup and you never leave the terminal.

Thetasigma_labs_setup

Thu, 14 May 2026 22:27:22 -0300

Setup
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register domain name
create github org
brew install hugo
Create the site
- mkdir thetasigma-site
- cd thetasigma-site
- hugo new site .
- git init
Instal VSCode extensions:

For making markdown look more like a document than a text file in VSCode, here are the best options
#
Markdown All in One (yzhang.markdown-all-in-one) — The most popular all-rounder. Better syntax highlighting, auto-formatting, table of contents, keyboard shortcuts for bold/italic, and improved list handling.

Navismo Ender3

Thu, 14 May 2026 21:05:26 -0300

Mon, 01 Jan 0001 00:00:00 +0000

Setting Up a Single Extruder as a Multi-Extruder in PrusaSlicer
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Printer: Prusa Core One L Slicer: PrusaSlicer Use case: Flush inlay lettering (black body with white letters) using a manual filament swap Status: Verified working

Purpose
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PrusaSlicer has two workflows for two-color prints on a single-nozzle printer:

Mon, 01 Jan 0001 00:00:00 +0000

hello2

Lab Notes on ThetaSigma Labs

Hosting a Static Site on GitHub Pages with a Custom Domain

Prerequisites #

1. Prepare the repository #

Lab Note: Signing Hugo so macOS Firewall Allows LAN Access to the Dev Server

Overview #

Lab Note: Docker Registry on Synology NAS with Browse UI

Overview #

Why This Is Useful #

Lab Note: Prusa Buddy3D Camera — Local Snapshot Feasibility

Overview #

Lab Note: Jenkins Agent Setup — Go, MinGW, and NSSM on Windows

Overview #

Installing Go #

Windows — beelink #

Lab Note: NFC Tag Setup for Filament and Location Tracking

Overview #

Tag Types #

Docker_dev_vscode_improvements

Github_push_and_tag

Option A — Squash all commits into one before pushing #

Option B — GitHub Releases (tag-based, history stays) #

Working_with_claude_and_vscode

User scope #

Why it’s there #

Automate HUGO labnotes

Use a Shell function (recommended — zero dependencies) #

Thetasigma_labs_setup

Setup #

For making markdown look more like a document than a text file in VSCode, here are the best options #

Navismo Ender3

Setting Up a Single Extruder as a Multi-Extruder in PrusaSlicer #

Purpose #

Prerequisites
#

1. Prepare the repository
#

Overview
#

Overview
#

Why This Is Useful
#

Overview
#

Overview
#

Installing Go
#

Windows — beelink
#

Overview
#

Tag Types
#

Option A — Squash all commits into one before pushing
#

Option B — GitHub Releases (tag-based, history stays)
#

User scope
#

Why it’s there
#

Use a Shell function (recommended — zero dependencies)
#

Setup
#

For making markdown look more like a document than a text file in VSCode, here are the best options
#

Setting Up a Single Extruder as a Multi-Extruder in PrusaSlicer
#

Purpose
#