Heart-Rate sensor bridge for Waterrower
Bild zu Post 'Heart-Rate sensor bridge for Waterrower'

HR-Bridge

A tiny nRF52840 bridge that turns your Apple Watch heart rate into the wired pulse signal an old WaterRower monitor expects.

The nRF52840 bridge acts as a Bluetooth LE central: it connects to the standard Heart Rate Service exposed by the HeartCast+ iPhone app, and re-emits every heartbeat as a short electrical pulse on the ring conductor of a 3.5 mm TRS plug wired into the rower’s heart-rate jack.

Read more...

First Tests with SveltiaCMS

Using Hugo as static site renderer is probably the most secure form for a WebSite. Unfortunately, the format of the Markdown files, the local storage and publishing process is far from usable for the average end-user.

With SveltiaCMS and a gitlab CI/CD-Pipeline, that renders the GitLab Repository with the content into a self-contained Caddy container-image, there is no longer any interpreted code on the server, that might be exploited.

backend:
    name: gitlab
    repo: wherever/name
    branch: develop
    auth_type: pkce # Required for pkce
    app_id: b....9
    api_root: https://..../api/v4
    base_url: https://....
    auth_endpoint: oauth/authorize

media_folder: static/images
public_folder: /assets/images
site_url: https://wolfgang-jung.net

collections:
    - name: 'blog'
      label: 'Blog'
      folder: 'content/posts'
      create: true
      slug: '{{slug}}'
      path: '{{year}}/{{year}}-{{month}}-{{day}}-{{slug}}/index'
      summary: "{{title}} — {{date | date('YYYY-MM-DD')}} ({{dirname}}) {{draft}}"
      preview_path: 'posts/{{year}}-{{month}}-{{day}}-{{slug}}/'
      preview_path_date_field: 'date'
      sortable_fields: [title, date]
      media_folder: ''
      public_folder: ''
      editor:
          preview: false
      fields:
          - { label: 'Title', name: 'title', widget: 'string' }
          - { label: 'Draft', name: 'draft', widget: 'boolean' }
          - { label: 'Publish Date', name: 'date', widget: 'datetime', format: 'YYYY-MM-DDTHH:mm:ssZ', picker_utc: false }
          - { label: 'Body', name: 'body', widget: 'markdown' }

With the matching config.yaml for hugo, I can now edit the pages online, without fearing the next Wordpress attack.

Read more...

MacOS Mail 'Send Later'

Seit MacOS 14 gibt es ja unter Mail die Funktion “Send Later” – leider ohne die erwartete Funktion: Die Mails blieben im Ordner “Später senden” liegen.

Die Lösung ist, Apple-typisch naheliegend:

  • Schedule mail for send-later
  • Reboot while the scheduled mail waits for delivery
  • Open Mail, delete the mails in Send Later
  • (Send Later folder now disappears, but is marked as active Mailbox since it was open on startup)
  • Schedule a new mail
Read more...

documenta-studien

Dank des hervorragenden Ruby-On-Rails CMS Frameworks Camaleon ging heute die Website des documenta-Instituts online: documenta-studien.de.

Galerie Bild 1 zu documenta-studien

Umsetzung des graphischen Designs in HTML/CSS, Anpassungen des Ruby-Codes, Integration Newsletterhandling, Video-Konvertierung in DASH und Hosting der Videos. Paketierung als docker-images, Hosting in eigener rancher-Umgebung. Die meiste Zeit hat dabei die Videoverarbeitung gekostet, die Skripte zur DASH-Video Konvertierung sind hier.

Read more...