[GreenKeys] Slo Mo VideO

[Jones, Douglas W]

From: W2HX [w2hx at w2hx.com] -- Tuesday, January 31, 2023 8:05 PM
> i’d love to see a slow mo video of such a thing working correctly.

Some students and I just spent the day with the U of Iowa's working model 33 thinking about a video.  We took the covers off and did some experimental slow-mo video of various parts.  Watching the ends of the code bars as it types is easy, and in slow-mo, you really see the binary codes clearly.  Watching the single-revolution clutches is also really fun.

What we found difficult was seeing any detail at all of the stunt-box as it decodes control characters.

The biggest hoot of the entire adventure was the slow-mo playback of the bell as it decoded a control G (BEL) character.  Of course, the clapper hits the bell, but the slow-mo also played back the sound, and what had been a ding became a really beautiful sonorous boooooonnnngggggg.  The student immediately said he was going to extract that sound and use it as a ring tone.  Too good to drop that sample on the cutting room floor.

Anyway, we've worked out a tentative script.  We're going to follow the data, from keyboard through distributor to selector magnet, cam cluster, blocking levers and code bars, with digressions into slow motion and paper-tape reading and punching.  Look for a decently edited result later this spring.

The title and end credits, of course, will all be typed at 10 characters per second from paper tape.

           Doug Jones
           jones at cs.uiowa.edu