SPCoast · plocher · Dec 13, 2025 · Dec 13, 2025 · Dec 13, 2025 · Dec 13, 2025
diff --git a/.github/workflows/jekyll.yml b/.github/workflows/jekyll.yml
@@ -0,0 +1,54 @@
+name: Build and deploy Jekyll site to GitHub Pages
+
+on:
+  push:
+    branches: [ "main", "gh-pages", "jekyll4-actions" ]
+  pull_request:
+    branches: [ "main", "gh-pages", "master" ]
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.2'
+          bundler-cache: true
+
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v4
+
+      - name: Build with Jekyll
+        run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"
+        env:
+          JEKYLL_ENV: production
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: _site
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deploy.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deploy
+        uses: actions/deploy-pages@v4
diff --git a/Gemfile b/Gemfile
@@ -1,28 +1,13 @@
 source "https://rubygems.org"
 
-# Hello! This is where you manage which Jekyll version is used to run.
-# When you want to use a different version, change it below, save the
-# file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
-#
-#     bundle exec jekyll serve
-#
-# This will help ensure the proper Jekyll version is running.
-# Happy Jekylling!
-# gem "jekyll", "~> 3.8.5"
+# Jekyll 4 + plugin set for building via GitHub Actions
 
-# This is the default theme for new Jekyll sites. You may change this to anything you like.
-# gem "minima", "~> 2.0"
-
-source "https://rubygems.org"
+gem "jekyll", "~> 4.3"
 gem "jekyll-remote-theme"
 
-# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
-# uncomment the line below. To upgrade, run `bundle update github-pages`.
-gem "github-pages", "~> 202", group: :jekyll_plugins
-
-# If you have any plugins, put them here!
 group :jekyll_plugins do
-  gem "jekyll-feed", "~> 0.6"
+  gem "jekyll-feed", "~> 0.17"
+  gem "kramdown-parser-gfm", "~> 1.1"
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
@@ -31,4 +16,3 @@ gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.0" if Gem.win_platform?
-
diff --git a/_config.yml b/_config.yml
@@ -35,8 +35,7 @@ github_editme_path: plocher/documentation-theme-jekyll/blob/gh-pages/
 # if you're using Github, provide the basepath to the branch you've created for reviews, following the sample here. if not, leave this value blank.
 
 
-host: 127.0.0.1
-# the preview server used. Leave as is.
+# host can be set via CLI; omit from committed config to avoid conflicts
 
 port: 4000
 # the port where the preview is rendered. You can leave this as is unless you have other Jekyll builds using this same port that might cause conflicts. in that case, use another port such as 4006.
@@ -54,8 +53,8 @@ highlighter: rouge
 
 description: >- # this means to ignore newlines until "baseurl:"
     Various things
-baseurl: "/" # the subpath of your site, e.g. /blog
-url: "/" # the base hostname & protocol for your site, e.g. http://example.com
+baseurl: "/" # for user/organization sites, keep "/"
+url: "https://spcoast.github.io" # canonical site URL
 
 github_username:  plocher
 twitter_username:  

diff --git a/_versions/Adapter-IO4-200/1.0.md b/_versions/Adapter-IO4-200/1.0.md
@@ -10,7 +10,8 @@ fab_date: 2013.05
 status: released
 publish: yes
 image_path: Adapter-IO4-200-Graphic.png
-tags: [eagle, SPCoast, Adapter]tagline: Simple RJ12/6 breakout board, for 0.200" screw terminals or direct wire soldering
+tags: [eagle, SPCoast, Adapter]
+tagline: Simple RJ12/6 breakout board, for 0.200" screw terminals or direct wire soldering
 overview: >
     <ul>
     <li>1.0 - Initial version </li>

diff --git a/_versions/Adapter-IO4-35mm/1.0.md b/_versions/Adapter-IO4-35mm/1.0.md
@@ -10,7 +10,8 @@ fab_date: 2011.10
 status: released
 publish: yes
 image_path: Adapter-IO4-35mm-Graphic.png
-tags: [eagle, SPCoast, Adapter]tagline: Simple RJ12/6 breakout board, for 3.5mm screw terminals or direct wire soldering
+tags: [eagle, SPCoast, Adapter]
+tagline: Simple RJ12/6 breakout board, for 3.5mm screw terminals or direct wire soldering
 overview: >
     <ul>
     <li>1.0 - Initial version </li>

diff --git a/_versions/Adapter-IO4-Grove/1.0.md b/_versions/Adapter-IO4-Grove/1.0.md
@@ -10,7 +10,8 @@ fab_date: 2014.10
 status: released
 publish: yes
 image_path: Adapter-IO4-Grove-Graphic.png
-tags: [eagle, SPCoast, Adapter]tagline: RJ12/6 breakout board, for Grove style 2mm pitch connector
+tags: [eagle, SPCoast, Adapter]
+tagline: RJ12/6 breakout board, for Grove style 2mm pitch connector
 overview: >
     <ul>
     <li>1.0 - Initial version </li>

diff --git a/_versions/Adapter-IO4-LED/1.0.md b/_versions/Adapter-IO4-LED/1.0.md
@@ -10,11 +10,12 @@ fab_date: 2011.10
 status: released
 publish: yes
 image_path: Adapter-IO4-LED-Graphic.png
-tags: [eagle, SPCoast, Adapter]tagline: RJ12/6 breakout board, for driving LEDs - includes resistor pack
+tags: [eagle, SPCoast, Adapter]
+tagline: RJ12/6 breakout board, for driving LEDs - includes resistor pack
 overview: >
     <ul>
     <li>1.0 - Initial version </li>
-    </ul
+    </ul>
 images:
   - image_path: /versions/Adapter-IO4-LED/1.0/Adapter-IO4-LED-1.0.brd.png
     title: Board

diff --git a/_versions/Adapter-IO4-Molex156/1.1.md b/_versions/Adapter-IO4-Molex156/1.1.md
@@ -10,7 +10,8 @@ fab_date: 2014.02
 status: released
 publish: yes
 image_path: Adapter-IO4-Molex156-Graphic.png
-tags: [eagle, SPCoast, Adapter]tagline: RJ12/6 breakout board, for 0.156 (molex) connector or direct wire soldering
+tags: [eagle, SPCoast, Adapter]
+tagline: RJ12/6 breakout board, for 0.156 (molex) connector or direct wire soldering
 overview: >
     <ul>
     <li>1.0 - Initial version </li>

diff --git a/_versions/Adapter-IO4-test/1.0.md b/_versions/Adapter-IO4-test/1.0.md
@@ -11,7 +11,7 @@ fab_date: YYYY-MM
 status: Pick one of   experimental, broken, released, replaced, retired
 publish: Pick one of  yes, no
 tags: [MRCS, SPCoast, eagle]
-tagline: First line: A short description of the project, used as a subtitle ot tagline
+tagline: "First line: A short description of the project, used as a subtitle ot tagline"
 overview: >
 
     Remaining lines: a verbose changelog of what makes this "git version" different from the last.

diff --git a/_versions/EagleTemplate-new/1.0.md b/_versions/EagleTemplate-new/1.0.md
@@ -10,7 +10,7 @@ fab_date: YYYY-MM
 status: Pick one of   experimental, broken, released, replaced, retired
 publish: Pick one of  yes, no
 tags: [MRCS, SPCoast, eagle]
-tagline: First line: A short description of the project, used as a subtitle ot tagline
+tagline: "First line: A short description of the project, used as a subtitle ot tagline"
 overview: >
 
     Remaining lines: a verbose changelog of what makes this "git version" different from the last.

diff --git a/_versions/IOB-Adapter-Generic/1.0.md b/_versions/IOB-Adapter-Generic/1.0.md
@@ -12,7 +12,7 @@ fab_date: 2020.09
 status: released
 release: yes
 tags: [eagle, SPCoast]
-tagline: IOB Personality: Generic I/O
+tagline: "IOB Personality: Generic I/O"
 overview: >
 
     A 5x2 plug in that exposes the I2C Expander pins to the IOB board connector

diff --git a/_versions/IOB-Adapter-Input/1.0.md b/_versions/IOB-Adapter-Input/1.0.md
@@ -12,7 +12,7 @@ fab_date: 2020.09
 status: released
 release: yes
 tags: [eagle, SPCoast]
-tagline: IOB Personality: Low Pass filtered Inputs
+tagline: "IOB Personality: Low Pass filtered Inputs"
 overview: >
 
     A 5x2 plug-in Low pass input filter, passes signals lower than 1Khz.

diff --git a/_versions/IOB-Adapter-Output/1.0.md b/_versions/IOB-Adapter-Output/1.0.md
@@ -12,7 +12,7 @@ fab_date: 2020.09
 status: released
 release: yes
 tags: [eagle, SPCoast]
-tagline: IOB Personality: Quad Open Drain output adapter
+tagline: "IOB Personality: Quad Open Drain output adapter"
 overview: >
 
     A 5x2 plug-in with 4x Open Drain outputs that can sink 100mA each

diff --git a/_versions/IOB-Adapter-Turtle/1.0.md b/_versions/IOB-Adapter-Turtle/1.0.md
@@ -12,7 +12,7 @@ fab_date: 2020.09
 status: released
 release: yes
 tags: [eagle, SPCoast]
-tagline: IOB Personality: Turtle Tortoise adapter
+tagline: "IOB Personality: Turtle Tortoise adapter"
 overview: >
 
     A 5x2 plug-in with 3x inputs and one output (Motor control, feedback for N, R and Occupancy)

diff --git a/pages/Adapter-IO4-200.md b/pages/Adapter-IO4-200.md
@@ -9,7 +9,8 @@ fab_date: 2013.05
 status: released
 publish: yes
 image_path: Adapter-IO4-200-Graphic.png
-tags: [eagle, SPCoast, Adapter]layout: eagle
+tags: [eagle, SPCoast, Adapter]
+layout: eagle
 tagline: Simple RJ12/6 breakout board, for 0.200" screw terminals or direct wire soldering
 overview: >
     IO4 0.200" Breakout board

diff --git a/pages/Adapter-IO4-35mm.md b/pages/Adapter-IO4-35mm.md
@@ -9,7 +9,8 @@ fab_date: 2011.10
 status: released
 publish: yes
 image_path: Adapter-IO4-35mm-Graphic.png
-tags: [eagle, SPCoast, Adapter]layout: eagle
+tags: [eagle, SPCoast, Adapter]
+layout: eagle
 tagline: Simple RJ12/6 breakout board, for 3.5mm screw terminals or direct wire soldering
 overview: >
     IO4 3.5mm Breakout board

diff --git a/pages/Adapter-IO4-Grove.md b/pages/Adapter-IO4-Grove.md
@@ -9,7 +9,8 @@ fab_date: 2014.10
 status: released
 publish: yes
 image_path: Adapter-IO4-Grove-Graphic.png
-tags: [eagle, SPCoast, Adapter]layout: eagle
+tags: [eagle, SPCoast, Adapter]
+layout: eagle
 tagline: RJ12/6 breakout board, for Grove style 2mm pitch connector
 overview: >
     IO4 Grove Breakout board

diff --git a/pages/Adapter-IO4-LED.md b/pages/Adapter-IO4-LED.md
@@ -9,7 +9,8 @@ fab_date: 2011.10
 status: released
 publish: yes
 image_path: Adapter-IO4-LED-Graphic.png
-tags: [eagle, SPCoast, Adapter]layout: eagle
+tags: [eagle, SPCoast, Adapter]
+layout: eagle
 tagline: RJ12/6 breakout board, for driving LEDs - includes resistor pack
 overview: >
     IO4 simple LED driver

diff --git a/pages/Adapter-IO4-Molex156.md b/pages/Adapter-IO4-Molex156.md
@@ -9,7 +9,8 @@ fab_date: 2014.02
 status: released
 publish: yes
 image_path: Adapter-IO4-Molex156-Graphic.png
-tags: [eagle, SPCoast, Adapter]layout: eagle
+tags: [eagle, SPCoast, Adapter]
+layout: eagle
 tagline: RJ12/6 breakout board, for 0.156 (molex) connector or direct wire soldering
 overview: >
     IO4 0.156" Breakout board (2"x2")

diff --git a/pages/IOB-Adapter-Generic.md b/pages/IOB-Adapter-Generic.md
@@ -12,7 +12,7 @@ status: released
 release: yes
 tags: [eagle, SPCoast]
 layout: eagle
-tagline: IOB Personality: Generic I/O
+tagline: "IOB Personality: Generic I/O"
 overview: >
 
     A 5x2 plug in that exposes the I2C Expander pins to the IOB board connector

diff --git a/pages/IOB-Adapter-Input.md b/pages/IOB-Adapter-Input.md
@@ -12,7 +12,7 @@ status: released
 release: yes
 tags: [eagle, SPCoast]
 layout: eagle
-tagline: IOB Personality: Low Pass filtered Inputs
+tagline: "IOB Personality: Low Pass filtered Inputs"
 overview: >
 
     A 5x2 plug-in Low pass input filter, passes signals lower than 1Khz.

diff --git a/pages/IOB-Adapter-Output.md b/pages/IOB-Adapter-Output.md
@@ -12,7 +12,7 @@ status: released
 release: yes
 tags: [eagle, SPCoast]
 layout: eagle
-tagline: IOB Personality: Quad Open Drain output adapter
+tagline: "IOB Personality: Quad Open Drain output adapter"
 overview: >
 
     A 5x2 plug-in with 4x Open Drain outputs that can sink 100mA each

diff --git a/pages/IOB-Adapter-Turtle.md b/pages/IOB-Adapter-Turtle.md
@@ -12,7 +12,7 @@ status: released
 release: yes
 tags: [eagle, SPCoast]
 layout: eagle
-tagline: IOB Personality: Turtle Tortoise adapter
+tagline: "IOB Personality: Turtle Tortoise adapter"
 overview: >
 
     A 5x2 plug-in with 3x inputs and one output (Motor control, feedback for N, R and Occupancy)