It looks really good. Like, really good. I have one thing that throws me, though: if you keep drawing over the same section, you don't get more coverage. It always looks like the first pass. But I'm so surprised at how well this works to emulate chalk.

It seems the only thing that changes how covered a section is the speed you go over it with.

I need this combined with Excalidraw somehow and I would be so happy. There's something so viscerally satisfying about chalkboards, even virtual. Thanks for this! You did a phenomenal job on the chalk effect.

Hah I did something similar around the same time, using random white/gray/black pixels (apparently, I don't remember any details any more!)

https://gilleain.blogspot.com/2008/11/chalky.html

That looks awesome!

This is so cool! It'd be even more fun if it had sound effects.

You're a monster.