Stenography (Yes, with Arduinos)

What’s the fastest keyboard? Few subjects are as divisive in the geek community. Clicky or squishy? QWERTY or Dvorak? Old-school IBM or Microsoft Natural? The answer: none of the above.

danger-court-reporter-tyingThe fastest normal-keyboard typists (Dvorak or Qwerty) can get around 220 words per minute (wpm) in bursts. That sounds fast, and it’s a lot faster than we type, but that’s still below the minimum speed allowable for certified court reporters or closed captioners. The fastest court reporters clock in around 350 to 375 wpm for testimony. But they do this by cheating — using a stenotype machine. We’ll talk more about stenography in a minute, but first a hack.

The Hack

[Kevin Nygaard] bought a used Stentura 200 stenotype machine off Ebay and it wasn’t working right, so naturally he opened it up to see if he could fix it. A normal stenotype operates stand-alone and prints out on paper tape, but many can also be connected to an external computer. [Kevin]’s machine had a serial output board installed, but it wasn’t outputting serial, so naturally he opened it up to see if he could fix it. In the end, he bypassed the serial output by soldering on an Arduino and writing a few lines of code.

shot0001The serial interface board in [Kevin]’s machine was basically a set of switches that made contact with the keys as they get pressed, and a few shift registers to read the state of these switches out over a serial connection. [Kevin] tapped into this line, read the switch state out into his Arduino, and then transmitted the correct characters to his computer via the Arduino’s serial over USB. (Video demo) As hardware types like to say, the rest is a simple matter of software.

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Hackaday Space: Transmission 3 Puzzles Explained


Yesterday we did a run down of Transmission 2 as part of a series of posts covering the ARG that we ran throughout April. Today I’m going to reveal all the details in Transmission 3, how we put it together and what the answers were.

In classic Hackaday fashion we hadn’t planned any of this, so by this point all our initial ideas we already used up and we were now running out of creativity so it was a real slog to get Transmission 3 out the gate. However we¬†somehow managed it and opened Transmission 3 by posting a series of 5 images of space telescopes:

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Hackaday Space: Transmission 2 Puzzles Explained


So yesterday we gave you a round up of Transmission 1 which went out on April 1st. We quickly went from having to put something fun together for April 1st to running a full month-long ARG making things very very hectic at SupplyFrame HQ. Let’s take a look at what pearls of data were hidden in the week 2 offerings of the Alternate Reality Game. In case you’ve been stuck somewhere without Internet for a couple of days, the game was a lead up to announcing The Hackaday Prize.

Transmission 2 started with the following video appearing at the top of the Hackaday blog:

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