Jonathan

The Liturgical Colour app

This is an article about the ancient traditions of the Christian Church, and the modern principles of developing software. Probably not much of an intersection there! Seasons For those who don’t know, most churches have a concept of liturgical seasons and colours. These vary a bit between denominations (i.e. Anglican, Catholic, Protestant, Episcopal, Lutheran, etc)Continue reading “The Liturgical Colour app”

Why don’t EVs have solar panels on the roof?

It’s a question I’ve heard asked quite a few times: why don’t EVs have solar panels on the roof? Then they wouldn’t need to be charged with a charger, would have infinite range, and would be using only green electricity! It’s a fair question. To answer it, let’s have a look at some numbers. HowContinue reading “Why don’t EVs have solar panels on the roof?”

Building a large format camera

Introduction I’ve wanted to build a wooden large format camera for years, but I made myself wait until my skills were up to scratch. I reasoned that a wooden camera isn’t really too much more difficult than a sort of trinket box / picture frame hybrid, so I decided to take the plunge. I lookedContinue reading “Building a large format camera”

Ecowitt weather stations, Prometheus, and Grafana

I recently received an Ecowitt WS2910 weather station for Fathers’ day. I’ve always wanted a weather station so I was very excited. This isn’t supposed to be a review of the product, but I think it would be helpful to go over the basics before we dive into the meat of this blog post (theContinue reading “Ecowitt weather stations, Prometheus, and Grafana”

Kubernetes Homelab Part 6: Deployments

Welcome to part 6 of my Kubernetes Homelab series. In the previous posts we’ve discussed the architecture of the hardware, networking, Kubernetes cluster, and infrastructure services. Today we’re going to look at deployment strategies for applications on Kubernetes. My goal for my homelab is not necessarily 100% automation, but I would like the ability toContinue reading “Kubernetes Homelab Part 6: Deployments”

Kubernetes Homelab Part 5: Hyperconverged Storage (again)

Part 4 of this series was supposed to cover hyperconverged storage with OpenEBS and cStor, but while I was in the middle of writing that guide, it all exploded and I lost data, so the blog post turned into an anti-recommendation for various reasons. I’ve now redesigned my architecture using Rook/Ceph and it has hadContinue reading “Kubernetes Homelab Part 5: Hyperconverged Storage (again)”

Kubernetes Homelab Part 4: Hyperconverged Storage

Sorry it’s taken a while to get to the next part of my blog series. This section was supposed to be about hyperconverged clustered storage in my cluster, but I unfortunately ran into a total cluster loss due to some bugs in MicroK8s and/or dqlite that maintainers haven’t managed to get to the bottom of.Continue reading “Kubernetes Homelab Part 4: Hyperconverged Storage”

My MIDI pipe organ workflow

Background I’ve written a couple of times about playing about with a MIDI-enabled pipe organ and I’ve shared some of my results on YouTube. Today I want to say a bit about my workflow because a few people have asked, and it is a somewhat complicated but hopefully interesting. This isn’t supposed to be instructional:Continue reading “My MIDI pipe organ workflow”

Kubernetes Homelab Part 3: Off-Cluster Storage

Welcome to part 3 of the Kubernetes Homelab guide. In this section we’re going to look at how to provide off-cluster shared storage. If you haven’t read the other parts of this guide, I recommend you check those out too. Out of the box, MicroK8s does provide a hostpath storage provider but this only worksContinue reading “Kubernetes Homelab Part 3: Off-Cluster Storage”