Blog
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hass-rejseplanen is a lightweight Home Assistant add-on that fetches departure data from Rejseplanen, filters it, compacts it for dashboards, and publishes it to an MQTT broker for use in HA automations and UI panels.
Why this exists
A wall-mounted Home Assistant dashboard by the front door is meant to streamline everyday routines — arming the alarm, switching lights, heading out the door. But if you still have to pull out your phone to check whether your train is on time, you’re adding friction right when time matters most.
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Spinbutton is a small, focused repo that delivers a highly customizable button for Home Assistant, with a spinner border that animates around the button. I built it to be simple, reusable, and easy to drop into small projects without pulling in a big UI framework.
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I moved MyCousinVinyl into Home Assistant as an add-on to save energy and simplify my homelab. Instead of keeping a separate always-on server just for the collection app, I let the HA box do double duty.
The HA server is a Raspberry Pi 5 with 8GB RAM and a 128GB SSD. That is plenty for Home Assistant plus MyCousinVinyl, and it lets me consolidate into a single, low-power device.
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This post is based on an article, I wrote on LinkedIn. Read the article here: LinkedIn
MyCousinVinyl started as a way of testing the code assistants, Claude and Codex: I wanted to compare the two. Our household collects records, but managing a growing vinyl library across multiple people quickly becomes messy. I wanted a system that treats a collection like a shared catalog rather than a single-user list, and I wanted it to be fast, reliable, and pleasant to use on any device. Building such a system, using the latest technologies and coding practices, seemed like a worthy challenge.
The application is called MyCousinVinyl - a play on words and a silent homage to the 1992 movie “My Cousin Vinny.” I kept it low-key, but the wink is there for anyone who like quoting the courtroom scenes.