Author Archives: amplifier

Explicit workspaces for Terraform

I’ve recently begun working with Terraform at work to move our infrastructure definitions to code. Like a lot of companies, we have some legacy applications that either have never been re-installed, or have been re-installed using a very long and … Continue reading

Posted in IT | Tagged | Leave a comment

Custom 3D-printed King of Tokyo monsters

What could be better than being a giant monster and beating other giant monsters into submission? Well, clearly, being a giant monster that isn’t represented by a cheap piece of printed cardboard with a small plastic base, but instead a … Continue reading

Posted in Games, Making stuff | 6 Comments

Elastic Beanstalk applications using two ports and Websockets

This blog post describes how to set up and deploy an AWS Elastic Beanstalk application written in Node.js that listens to both regular HTTP requests and Websocket connections. TL;DR: Download the sample application, and deploy it into an EB environment … Continue reading

Posted in IT | 2 Comments

Useful paths for debugging Elastic Beanstalk deployments

Sometimes it can be painful to try and get an Elastic Beanstalk application to deploy cleanly. In order to effectively debug the issues, it’s necessary to SSH into the instance. This requires that you’ve added a Key Pair in the … Continue reading

Posted in IT | Leave a comment

Setting up a Raspberry Pi from scratch

Getting started with a Raspberry Pi is basically really easy: All you need to do is get a disk image and burn it to an SD card. But of course, that’s just the very basic starting point. Theres’s plenty of … Continue reading

Posted in IT | Tagged | Leave a comment

RetroPi briefcase

Here’s a quick build I just finished: A Raspberry Pi running RetroPi, installed in a Makita powerdrill briefcase with a 7″ TV and four USB controllers. Also included are all the components necessary to power the whole setup: A 12V … Continue reading

Posted in Electronics, Games, Making stuff | Leave a comment

Forwarding SSH keys to a Vagrant box

Scenario: A new Linux box has been installed with Vagrant, and now I must git clone a non-open repository to the server, so I need to forward my SSH keys to the root user on the virtual server. 1) Add … Continue reading

Posted in IT | Leave a comment

A method for neatly stowing the lines on a skydiving parachute

Looking at the way some freshly licenced (and some older) jumpers struggle with making neat line stows, I figured I’d document the method I’ve been using to stow my lines. Here goes: A method for neatly stowing lines These instructions … Continue reading

Posted in Skydiving | Leave a comment

My “first order retrievability” toolbox

Here’s my take on a toolbox observing the principle of “first order retrievability” as popularized by Adam Savage. In short, all tools can be reached without moving other tools out of the way first. The box itself is a Draper … Continue reading

Posted in Making stuff | Leave a comment

Filtering out outliers in Arduino ultrasonic distance sensor data

A friend of mine asked me how he could remove invalid data points from the measurements made by the ultrasonic range finder in his Arduino project. A quick search got me to this page, but some of the links were … Continue reading

Posted in IT, Making stuff | Leave a comment