Erwin Damsma: notes Write-ups of side projects. https://damsma.dev/notes/ 2026-10-17T00:00:00Z Erwin Damsma https://damsma.dev/ Reading my sleep study before the hospital did https://damsma.dev/notes/reading-my-sleep-study/ 2026-10-17T00:00:00Z 2026-10-17T00:00:00Z A home sleep study for sleep apnea, a memory card copied before the recorder went back, and an undocumented format that checks its own decoding. I'd read the night myself before the hospital's report came in.