I'm glad you liked the puzzles! I was worried they would be hard to read or awkward to solve (like that 3rd one on normal), in fact the original plan was to have up to 4 signals at the same time but during play testing they all felt really really bad. I think zoom options on the oscilloscope would've expanded the range of things the puzzles could do, but alas, hindsight is 20/20 :D
Thank you for the kind words!