https://aem1k.com/qlock/
I reverse engineered it to a unobfuscated version a few years ago:
https://gist.github.com/olooney/a89db3932b089925b71b68d7e9f2...
He's done a ton of other great ASCII visualizations as well:
https://aem1k.com/
edit: it’s impressive as all hell but like