Hardware & Electronics on Christof Länzlinger

Granit — Offsite Backup Appliance

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

An open hardware offsite backup appliance based on the Raspberry Pi CM4. A custom carrier board with a PCIe SATA controller, Gigabit Ethernet, and a battery-backed RTC — designed to be left at a trusted location and managed remotely.

Home NAS Infrastructure

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

A self-hosted NAS server managed entirely as Infrastructure-as-Code. The system runs Ubuntu Server with K3s (lightweight Kubernetes) and uses FluxCD for GitOps-based continuous deployment. The 3D-printed case integrates a 7" touchscreen kiosk display showing a live Grafana dashboard.

Hardware

The server is built on a Topton Q670 board with an Intel i5-12400 processor. Storage consists of four 4TB Seagate IronWolf drives in a ZFS RAIDZ1 pool for bulk data (11TB usable) and a 1TB FireCuda 530R NVMe SSD for the Kubernetes system and fast workloads.

Pedalboard Hard and Software Platform

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

A showcase for the combination of many different engineering skills: My custom pedalboard hard and software platform for managing guitar effects pedals during live performances.

CNC Milling Project

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

A build of a very rigid CNC milling machine based on is capable of milling wood, plastics, and soft metals like aluminum. It features a sturdy frame, stepper motors for precise movement, and a spindle for cutting.

This is the starting of my CNC journey. Although the machine is capable, its a kind of bootstrap project to learn more about CNC milling, CAM software, and machining techniques.

Future plans include the build of a PrintNC machine.

Electronic Prototyping

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

My electronic prototyping is supported by a Lumen-PNP machine. The pick-and-place workflow is automated with openpnp-tools.