Hey, I'm Simon

Software engineer in Germany. I tinker with Linux, networking, home automation, and embedded systems — and write about what I figure out along the way.

GitHub Bluesky

Open Source

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hetzner-radar

Tracks the Hetzner server auction in real-time, helping you snag deals on dedicated hardware.

TypeScript

plundrio

Makes put.io work seamlessly with Sonarr/Radarr by speaking Transmission's RPC protocol.

Go

cowboy-ha

Brings Cowboy e-bike stats into Home Assistant — battery, range, trip data, and more.

Python

Recent Posts

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Apr 9, 2026

Receiving OpenRouter Traces in Grafana Tempo

OpenRouter can broadcast OTLP traces for every LLM request. Here's how I set up Grafana Tempo on my homelab to receive them and built a dashboard for model usage, costs, and latency.

openrouteropentelemetrygrafanamonitoringnixoshomelab

Apr 4, 2026

Pushing Metrics from Cloudflare Workers to Prometheus via OTLP

Cloudflare Workers are stateless and can't be scraped. Here's how I built a lightweight OTLP client to push counters and histograms to Prometheus.

cloudflareprometheusopentelemetrymonitoringtypescriptopen-source

Mar 11, 2026

Adding DNS-over-QUIC to Blocky for Faster Encrypted DNS

I implemented DoQ upstream support in Blocky and cut encrypted DNS latency from 20ms to 4ms on my homelab.

dnshomelabnixosgoopen-source