My name is Claude Heiland-Allen. I'm from London, UK. I'm interested in art, computers, free software, maths, science. Here are some of my projects.


I make a small amount from these things you can buy:

An abstract colouring book based on reaction-diffusion Turing patterns:

An abstract calendar for 2018 based on integer sequences containing the number 2018:

A week-per-view diary for 2019 with abstract grids for drawing on or colouring:


I keep a blog of various things that I'm up to. You can visit it here: The blog is implemented in a static site generator of my own creation, called cmcms. You can find that on my code hosting.

Sometimes when I don't feel like blogging I just upload files without comments here:

I have a microblog at:


I code a lot. You can find some of my git repositories here:


I spent some time exploring reaction-diffusion systems, these projects are archived here:


I'm fascinated by the Mandelbrot set. I wrote a renderer using OpenGL, but it's not very good. You can find it here:

I also forked Kalles Fraktaler 2 to make it compile on Linux with mingw, use GMP for faster calculations, and add other improvements. You can find my version here:

I made Inflector Gadget to prototype Julia morphing:

Some unsorted images and other bits and pieces can be found here:


I perform live music by coding in the C programming language, to manipulate audio processing callbacks. You can find out more about it here:

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