I'm still very much a beginner when it comes to MCUs. I have so much to learn. The STM32s and ESP32s are astonishingly cheap and powerful compared to Arduino range. I can see why Unos and Nanos are so popular, though. They're vastly more accessible. I had toyed with the idea of using an ATTiny85 chip to do the capturing. I don't think it would have worked, though. The SPI interface I saw turned off interrupts during the transfer, so I don't think the Tiny would be up to the job. Nice small chips, though.
Well done for recognising Cullen. I imagine that many beaches must look similar. Raku is fun to play with from time-to-time, especially for playing with parsing. Forth is just a way cool language that's fun (and often frustrating) to mold however you wish. It's very much a "masochists" language in the sense of The Pervert's Guide to Computer Programming Languages (https://news.ycombinator.com/item?id=22910702