QR abuse...

I'm known for QR code stuff, and my library, but I have done some abuse of them for fun - I did round pixels rather than rectangular, for example.

The latest abuse was inspired by https://mathstodon.xyz/@divbyzero

His idea was a Truchet style...

I have done some more work on the idea. For a start I did not like the harsh edges and cut circles, so made it slightly different. I also had concerns on the cycles hitting the targets as this may cause timing issues perhaps.

Looks good. But I also tried larger and it had trouble reading at an angle, and I think because I had Truchet coded the alignment marks needed on larger codes.

So I made them rectangular, e.g. same code as above with alignment mark intact.

Now it reads better at an angle. (tested on iPhone camera and an app).

But the final abuse... I quite like :-)

Do not blame me if you now have a migraine, please.