Hacker News: devinvs

Privacy Respecting Age Controls

devinvs — Sun, 22 Mar 2026 23:39:32 +0000

Article URL: https://gist.github.com/devinvs/e334f7fb92f8d9b41b821a1dc8a46fde

Comments URL: https://news.ycombinator.com/item?id=47483553

Points: 1

# Comments: 1

New comment by devinvs in "The Rust calling convention we deserve (2024)"

devinvs — Thu, 05 Mar 2026 00:52:48 +0000

x86_64 function arguments in linux are passed in registers RDI, RSI, RDX, RCX, R8, R9. The mnemonic helps remember the order.

New comment by devinvs in "I didn't reverse-engineer the protocol for my blood pressure monitor in 24 hours"

devinvs — Wed, 12 Nov 2025 20:26:31 +0000

I might be misunderstanding, but this seems very wrong. your method on the first entry:

  10011011010100101100001101010000
  year = 101 00 (20? year should be 25 or 2025)
  month = 1001 (9, but month is Nov)
  day = 1001 (9, not enough bits to encode large days)
  hour = 01 1 or 01 11 (3, 7, or 14 reversed, should be 11)
  no minute field

New comment by devinvs in "I didn't reverse-engineer the protocol for my blood pressure monitor in 24 hours"

devinvs — Wed, 12 Nov 2025 00:42:03 +0000

my best shot at it:

  year:   bits 0-6 reversed
  month:  bits 6-10 reversed
  hour:   bits 13-18
  minute: bits 18-24
  day:    bits 24-29 (maybe reversed)

unsatisfyingly I don't have any idea what the gaps are or why parts need to be reversed, so i could be wrong. With the data from the post:

  y  mo d  h  mi
  25 11 10 11 3
  25 11 10 11 31
  25 11 10 12 1
  25 11 10 12 35
  25 11 10 13 0
  25 11 10 13 31
  25 11 10 13 31
  25 11 10 14 0

New comment by devinvs in "Eurorack Knob Idea"

devinvs — Fri, 25 Apr 2025 15:24:57 +0000

looks like it's this: https://git.mitxela.com/web-git-sum