Inkscape is awesome

I’m making some documentation for my little music box. Settings for the box are managed by setting pixel colours to represent different values. Above you can see the settings for the red (tune) track. You hold down the tune button and then step through the settings on each note key. I made the diagram above using Inkscape. It is an awesome program. In a trice I’d found a way of making a circle of perfectly spaced buttons, then I was creating blocks of text filled with the appropriate colours and lining them up together.

Inkscape drawings are represented as SVG files so you can enlarge and transform them as much as you like. The program is a free download and there are versions for lots of different platforms. The learning curve is a bit steep, but the internet is full of videos describing how to do things (for example draw 12 circles in a ring as above).