Projects
Apps, gadgets and half-built ideas, each with its own write-up.
TatNav
Zero hassle free shit. Point your phone at something left out on the street and it goes on a map for anyone nearby. No login, no typing, no forms.
Speedy
Crowdsourced average speed cameras. Phones along a road read number plates on-device, and when two of them see the same car, Speedy works out how fast it went between them.
Scriptic
A social platform for creating, playing and hosting clue trails over SMS. Treasure hunts, quizzes and riddles, played by text message.
Audio Positioning System
Pinpoints where sounds are in a room from the tiny differences in when they reach a microphone in each corner. Runs in the browser, with a simulated room to try it without the hardware.
Sudoku Solver and Grader
A free sudoku solver and difficulty grader. Scan a puzzle with your camera, watch it solved step by step, and see how hard it really is.
The Whask
The idea for this came about after I was asked to whip some cream for a key lime pie. I found the conventional whisk action didn't feel right and caused strain…
Time is Money
A counter that reframes your working hours as money earned, and money as the hours it costs you.
bristoljon.uk
The site you're reading. Now a static build rather than PHP and MySQL.
3D Viewer
Automates a stereoscopic 3D effect by restyling paired iframes from height and depth attributes in the source HTML.
Dozenal Calculator
A free dozenal (base 12) calculator and converter. Works in dozenal or decimal, with exact fractions and recurring digits shown.
One Time Pad Encryption
One-time pad encryption and decryption in the browser. Unbreakable given a good key, and simple with it.
iMedic - Paramedic App
An iOS app written in Objective-C for paramedics — assessment tools and drug calculations.