paper tape archiving

Paul Koning paulkoning at
Thu Jul 30 07:55:23 CDT 2020

> On Jul 29, 2020, at 11:22 PM, Steve Malikoff via cctalk <cctalk at> wrote:
> ...
> Paul's reader idea sounds fine. I have a super simple idea, how about a 3D-printed guide with a geared hand crank and a bracket for attaching a mobile phone looking down at the
> tape running through the guide below it. Then set it to record video and crank away at a steady rate. The crank has a meter or moving widget to add additional means of tracking.
> At a later stage some video processing could read the pattern from the video. There would undoubtedly be a python library for that. It would capture the label and other
> labelling nicely too.

That could certainly be done.  Not that 9 photocells is all that hard, though.  I'm not sure if the Python code for this exists but it can't be all that hard to write.

I think I saw something similar for a card reader: feed the card, position it under a camera, take a photo, repeat.  


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