I’m a computer scientist and developer with over 25 years industry experience. I’m a veteran iOS developer (since 2009).

I’m writing about software development, maths, electronics, making, art, music, and a few curiosities.

If you think you understand something, try explaining it to someone.

I’m keen on The Composable Architecture and Point Free.

I’ve worked in and with a wide variety of companies and organisations, from the public sector justice system to financial institutions and startups. I’m always looking for interesting projects to work on.

dev

• How’s your greenfield project game?
• Functional Swift: Currying
• Interview home coding tasks: my policy
• Swift Testing: ready for prime time?
• Graphics and projective geometry: equation reference
• Tesselation project (and a simple concave polygon hit test algorithm)
• Graphics & geometry: the orth function in 3D
• Swift Testing: an ergonomic combination helper

electronics

• Ohmaps: your image montage is a resistor network
• Ohmaps (part 2)
• Electronics: KiCad PCB fabrication and the cap-fun project
• Electronics: cap-fun PCB fabrication results
• Ohmaps: crossing the Wheatstone bridge
• Ohmaps: AC/DC walkabout (part 1)
• SFX electronics: remote-controlled LED skin prosthetic

curiosities

• Ohmaps: your image montage is a resistor network
• Ohmaps (part 2)
• The Lost Clock Emporium
• The Lost Clock Emporium: details
• Ohmaps: crossing the Wheatstone bridge
• Ohmaps: AC/DC walkabout (part 1)

art

• Tesselation project (and a simple concave polygon hit test algorithm)
• Million Point Sculptures: an exploration tool written in Metal

music-making

• Drumming: Snare technique fundamentals

3d-printing

• Getting into 3D printing
• OpenSCAD: things to remember

ringing

• Change ringing: extensions to place notation
• Change ringing miscellany

ai

• Beware of ChatGPT dazzle

bread

• Artisan bread and pizza iOS app: details

tools

• jdupes: file de-duplication tool

writing

• How this site is built and published

image processing

• Xor Xor Gabor

maths

• Foothills of Combinatorics (part 1)
• Foothills of Combinatorics (part 2)
• Beware of ChatGPT dazzle
• Orthogonal flight path intersection: my own solution
• Graphics and projective geometry: equation reference
• Tesselation project (and a simple concave polygon hit test algorithm)
• Foothills of Bayesian Analysis
• Graphics & geometry: the orth function in 3D
• Million Point Sculptures: an exploration tool written in Metal

graphics

• Graphics and projective geometry: equation reference
• Tesselation project (and a simple concave polygon hit test algorithm)
• Graphics & geometry: the orth function in 3D
• Million Point Sculptures: an exploration tool written in Metal

organisation

• Tip: quicker cable recognition