A DIY card reader, FYA

John Foust jfoust at threedee.com
Thu May 14 10:36:12 CDT 2015

At 12:52 PM 5/6/2015, Mike Stein wrote:
>This grew out of off-list correspondence about the
>card punch I'd mentioned on here recently;

Google "arduino punched card reader" and a number of options turn up.

- John

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