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I'm working on a embedded project with RasberryPI. I have a
single green LED connected to it to give me status. The
trouble was running into is that I constantly found myself
having to connect a monitor to troubleshoot various things.
Now I just send my status messages through the flashes
of my
LED light. It's very low bandwidth but it works.
This should be a standard way of getting devices without a
monitor to interact with humans. Same goes for input.
Device without keyboard? No problem, just slap a single
button on it and tell it what to do in morse code.
Mit zer audio of the Morse message (in .wav format)
https://drive.googl...piMjfIbHJ7nXoxz_ZC1
Courtesy of text/morse convertor at https://morsecode.scphillips.com/ [not_morrison_rm, Apr 21 2018]
[link]
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And the innovation is ... ? |
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The "beep" error codes on a pc aren't Morse, but they're amenable to lookup tables for explanations. |
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Since the earliest days of electronic computers, flashing lights have been used to indicate status, developing into the classic "front panel" using neon lamps. |
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Really big errors were indicated by a very bright orange-yellow glow, accompanied by crackling noises, a distinctive smell of burning, and large quantities of Magic Smoke ... |
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[8th]'s errors go up to 11. |
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I've been working on embedded projects since the years still started
with a 1. |
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It is thoroughly baked and WKTE that you always, _always_, put a
LED or two on
the first board. |
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It's a very effective preventative measure against suicidal software
engineers. |
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The invention here seems to involve the single key
code for input. Throw a timing circuit in and a
time blinking light and you can do Morse-to-bit
programming. Kudos if you can manage to
program mindfuk with it. |
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- .... . / .-. .- ... .--. -... . .-. .-. -.-- / .--. .. / ... .- .. -.. / .-..-. .-- .... .- - ..--.. / .. - / .-- .- ... / .- / --- -. . ..--.. / .-.. --- --- -.- . -.. / -- --- .-. . / .-.. .. -.- . / --.. . .-. --- / - --- / -- . .-..-. .-.-.- |
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What if you're working in the dark ? |
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Morse code is really quite slow, so you could speed it up a bit and use another computer or machine to decode it into text. And then you could move away from using morse, since it would be useful to be able to send capitalization, special symbols, binary data and so on you could just have blocks of eight flashes representing bytes. And the LED would maybe be prone to errors, so to get a better connection you could just use a wire between devices. |
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Good idea, but why can't you just VNC into it to see
what's happening? |
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// just use a wire between devices // |
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If you had a strip of paper moved by a motor, and a pen moved across it by a solenoid, then the pulses would be recorded as a series of wiggly lines - which could be transcribed into heiroglyphs and chiseled onto large blocks of stone for a more permanent record. |
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That seems unnecessarily elaborate. Why not just equip the device
with a hammer and chisel, driven by a solenoid and a suitably large
transistor, and have it chisel the hieroglyphs automatically? |
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