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Fixing the Portobello Police Station Clock

548 points · 116 comments · avidly

  1. SaberTail · · focus · HN ↗
    > The "Status" LED flashes some kind of code - long long, short short short. I assumed the number of flashes would correspond to the time but apparently not. We didn't have time to figure this out before we had to leave.

    long-long-short-short-short is 7 in morse code. They don't say what time they tried this or if it ever changed, though, so that's just a hypothesis.

    1. MacNCheese23 · · focus · HN ↗
      As an engineer i would never think that complicated - morse code?

      Couldn't it be just binary

      long-long-short-short-short

      11000

      Which is - to everyones surprise - 24 as in hours.

      1. xp84 · · focus · HN ↗
        To anyone other than a computer engineer, I would bet Morse code would be preferred at least 10 to 1. Most people who aren’t computer science majors could barely decode binary “10” correctly, whereas writing down the dots and dashes and googling “Morse code chart” is something I’d bet over 50% of non-engineers could do accurately.
        1. zettabomb · · focus · HN ↗
          How is this any different than decoding binary? If you can read a chart of codes involving either dot or dash surely you can also read a chart of codes with either 0 or 1.
          1. OtherShrezzing · · focus · HN ↗
            It's not so much that it's different, it's just that Morse is the canonical dot-dash/beep-boop communication format in the UK, and binary is a niche distant second known only in the abstract as "it's all ones and zeros" to most non-tech people. So while an engineer would expect a beep-boop to be binary, a police station caretaker would expect it to be Morse, and I'd expect the people building that system to build it for the caretaker.
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