Tektronix 492 Spectrum...
Dec 6, 2014
Spectrum analysers are devices for measuring the frequency components of a radio signal (RF). The Tek 492 is a relatively old model (from the 1980’s), but it has pretty decent s...
Canon EF-S Lens Repair
May 21, 2014
I repaired the focus commutator on a Canon EF-S 18-55mm lens . The fault manifests as an inability for the lens to focus in both directions. In other words, it’ll focus in one d...
Geek is Good Photobooth
May 17, 2014
I created an interactive display for the Geek is Good exhibition that was/is held in the Oxford Museum of the History of Science from May-September 2014.
Arduino Controlled Sol...
Apr 7, 2014
I replaced the faulty controller in my soldering station with an Arduino. The soldering station is a combined iron and hot-air lance and is branded as a Duratool ZD-912. I got ...
RFID Door Lock
Mar 2, 2014
I created a door-entry system for Oxhack using RFID smart cards. Oxhack is the Oxford Hackspace. The system is probably a little more complicated than it could be, but this opti...
Light Painting 2
Feb 3, 2014
This is an extension to my earlier light painting project.
Interactive Plots in O...
Jan 14, 2014
Here’s a trick I used to present multi-dimensional data with the Octave mathematical programming language. In my particular application, I had a dataset that varies with respec...
Nov 23, 2013
Schlieren imaging is a technique that lets you see small changes in refractive index .
Nov 23, 2013
The temperature and humidity of our house is something that’s been bothering me for a while. We’re very frugal with the heating and I wanted to know how much difference install...
Jul 14, 2013
Persistence of vision effects have been a minor interest of mine for several years, and I recently discovered an LED strip for sale containing 60 individually addressable RGB L...