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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. ErroneousBosh · · focus · HN ↗
      I used to use Morse to blink out status codes in similar things but I think by the mid-2000s I'd moved from PIC16F628s to atmega328.

      I didn't build the chime box but it looks like the sort of thing I used to do back then.

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