Ground Bounce

Taming a PoE switch with Home Assistant: a debugging story

Fri, 09 Oct 2026 00:00:00 +0000

Every PoE port on my switch powers on by default. Making Home Assistant switch them off over SNMP took five bugs, and the last one was a data-model mistake, not a syntax error.

A small VPS for a few static sites

Wed, 07 Oct 2026 00:00:00 +0000

Caddy, nftables, and Cloudflare in front of a handful of static sites on a 2 GB VPS, with Hugo builds deployed from GitHub Actions through a deploy key that can only write one directory.

Local AI inference on hardware I already had, and then a bit more

Fri, 02 Oct 2026 00:00:00 +0000

Running local LLMs and a RAG stack in a Proxmox VM: starting on a 6 GB GTX 1660 Ti, moving to a passed-through GTX 1060, and finally upgrading to an RTX 5060 Ti 16 GB, plus what changed at each step.

Renaming a media library from Plex's own database

Fri, 10 Jul 2026 00:00:00 +0000

Plex already knows what every file is. A small Python script reads that knowledge straight out of its SQLite database and renames files to match, without fighting Plex while it runs.

Chasing coil whine into the CPU idle states

Mon, 15 Jun 2026 00:00:00 +0000

An old gaming laptop running Proxmox as an always-on server ticked like a broken clock. The cause was the CPU’s deepest idle states, the fix was in cpuidle, and the price was 10 to 15 W.

About

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

I’m an embedded software developer working mostly in the Linux kernel and driver space, on single-board computers that run audio products. I also do my best to run a low power, but still capable, homelab.

Why “ground bounce”? It means two things to me.

Projects

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

A few things I’ve built or keep running. Each one links to a write-up where there is one.

Small VPS for static sites

Caddy, nftables, and Cloudflare in front of a handful of static sites, with Hugo builds deployed from GitHub Actions. Write-up