Image Zoom with plain JavaScript and CSS

— I'm a back-end developer and rarely dabble in the fine art of writing JavaScript. This site still uses jQuery for handling image zooming. No more!

Bitcoin Mining Anno 2017

— Bitcoin is still going strong since its introduction in 2008. Mining Bitcoin has become increasingly difficult, so how does one mine BTC in 2017?

Marantz PM80 Mk2 Repair Log

— The venerable Marantz PM80 Mk2. This unit was completely dead, but I was able to bring it back to life!

Squash git commits when merging

— Got a branch where you tried lots of different things to fix that nagging bug, but want to clean up your git history when merging?

Music Streaming Setup

— I love listening to music. Although I prefer the off-line, analog way of listening to vinyl records, I also a small-ish CD collection I'd like to use on the go.

Denon PMA 720a Repair Log

— A classic 1989 Denon PMA 720a Integrated Amp that made a bang and wont't turn on. Let's solve this!

Marantz SR5200 Repair Log

— A Marantz SR5200 receiver with a non-working front-right channel. Let's fix that!

Denon PMA-560 Repair Log

— Log of diagnosing and repairing a Denon PMA560 Stereo integrated amplifier.

Rails generate model: be specific

— Rails offers some very useful generators, one of which creates new model, including migrations. But did you know you can get into the specifics right from the command line?

Building Golang CLI Tools Update

— After my previous post on using a `Makefile` to set version and build info I got some valuable feedback from other Gophers. Here's an update.

A makefile for Golang CLI tools

— Golang is very useful for creating command line interfaces. It does get complicated when you also want to set variables at compile time. I've made a Makefile for that.

Testing with MiniTest

— Minitest is a small and fast test framework that works delightfully well with Ruby on Rails.

VoltMeister 100: Bench Power Supply - Part 2

— In Part 1 of this series I discussed how an ATX power supply can be usedto create a poor man's bench power supply. In Part 2 I'll show you howI managed to fit the ATX power supply, my control board and everythingelse neatly into a single box.

VoltMeister 100: Bench Power Supply - Part 1

— A bench power supply is one of the essential tools of any electronics hobbyist.Although you can buy a such a unit for less that € 50, it's way more fun to build one yourself.