ariejan de vroom

Tmux and Vim: Copy and Paste on macOS Sierra

22 March 2017 — As a developer, more than anything, you copy and paste things. Making copy and paste work in properly with Vim and Tmux is, unfortunately, not trivial.

Image Zoom with plain JavaScript and CSS

20 March 2017 — 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

8 March 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

9 October 2016 — 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

17 August 2016 — 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

24 April 2016 — 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.

Hanami and Multi-Database Testing with Travis

15 April 2016 — Hanami: good! Travis: good! Testing your code against multiple databases: priceless!

Denon PMA 720a Repair Log

10 April 2016 — 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

21 January 2016 — A Marantz SR5200 receiver with a non-working front-right channel. Let's fix that!

Denon PMA-560 Repair Log - Update

12 January 2016 — Replacement parts for the Denon PMA-560 have arrived. Let's get to work!

Denon PMA-560 Repair Log

7 January 2016 — Log of diagnosing and repairing a Denon PMA560 Stereo integrated amplifier.

Putting ariejan.net on a diet: a 69% reduction

6 January 2016 — Websites are getting bigger and fatter, let's put ariejan.net on a diet.

El Capitan: Safari New Tab Slow Fix

4 December 2015 — Safari is a decent browser. But recently I noticed a 3-5 second lag when opening a new tab, so I investigated.

Rails generate model: be specific

27 November 2015 — 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

12 October 2015 — 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

3 October 2015 — 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.

Postgresq error: type 'hstore' does not exist

5 August 2015 — When importing a postgres dump into a clean database I got an error about type 'hstore' not existing. This is how your fix that.

Testing with MiniTest

7 April 2015 — Minitest is a small and fast test framework that works delightfully well with Ruby on Rails.

VoltMeister 100: Bench Power Supply - Part 2

26 November 2014 — 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

24 November 2014 — 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.