REGISTER | LOGIN
Breaking News
Blog

Do You Have a Working Paper Tape Reader?

Blog
1/6/2014 12:20 PM EST

 74 comments   post a comment
NO RATINGS
View Comments: Newest First | Oldest First | Threaded View
<<   <   Page 8 / 8
David Ashton
User Rank
Author
Re: scanner?
David Ashton   1/6/2014 2:48:39 PM
NO RATINGS
@Max....even if your KSR33 does not carriage return and line feed, it should be able to read the tape and send the codes out on the RS-232 line to a PC which can then record them.  However, depending on the state of your KSR, banging the print carriage against the end of the line might do some damage....I doubt it though, they were pretty rugged beasts.

Alternatively you could get 9 IR leds and 9 IR photodiodes and make your own reader,  You will note that the feed holes are smaller than the data holes, this is so the position detecting photodiode will not sense the hole until it the data holes are well and truly aligned...like this

Data _______/""""""""""\_________

Feed __________/"""\___________

Sorry...tried to post a nice graphic but it would not do it.....

You'd have to get a small MCU to read the 8 data lines when the feed hole is detected, and then send it off in serial form to a PC.  You'd also have to make up a guide to keep the paper tape straight as it passed your detector.

I could whip something like this up with a PICAXE but I don't have any paper tape.   It also strikes me that you may have to find very small LEDs / diodes or file down some 3mm ones to fit......

BTW if the tape is only a few feet long you could read it manually. I have a graphic with the codes but no doubt that would not post here either....

Max The Magnificent
User Rank
Author
Re: scanner?
Max The Magnificent   1/6/2014 2:19:52 PM
NO RATINGS
@Antedeluvian: Surely is must be easier to create some software to read paper tape on the scanner.

If the program were only a couple of feet long ... maybe ... but what if it's 100s of feet long?

Max The Magnificent
User Rank
Author
Re: scanner?
Max The Magnificent   1/6/2014 2:18:42 PM
NO RATINGS
@Antedeluvian: I came across a post that describes how to read vinyl records using a scanner.

This is AMAZING!!!

antedeluvian
User Rank
Author
scanner?
antedeluvian   1/6/2014 1:52:01 PM
NO RATINGS
I came across a post that describes how to read vinyl records using a scanner. Surely is must be easier to create some software to read paper tape on the scanner (or something else). I did a Google search and found how to read a punch card  with a camera. There is an Arduino Punch Card Reader

Any volunteers?

<<   <   Page 8 / 8
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed