Rupert Reynolds · @RupertReynolds
30 followers · 1049 posts · Server hachyderm.io

Any suggestions please for a DIY punch/reader project? It seems I can't afford the kit I used at college :-(

I've already settled on reading holes read by photodiodes, pretty much.

Punching? I've considered solenoid punches, but they look to be hard work to build and set up, and LASER punching of cheap thermal paper against a metal anvil (it should blacken and burn away where it isn't backed by metal, and punching speed is not really an issue for small data sets).

#papertape #retrocomputing

Last updated 2 years ago

IT News · @itnewsbot
3584 followers · 269068 posts · Server schleuss.online

Let’s Listen to a Tape — Paper Tape - These days, data is as likely as not to be “in the cloud.” Otherwise, it’s probabl... - hackaday.com/2023/08/03/lets-l

#fanuc #teardown #papertape #repairhacks #retrocomputing

Last updated 2 years ago

IT News · @itnewsbot
3477 followers · 266231 posts · Server schleuss.online

Reverse-Engineering Helps Typesetting Machine Punch Paper Tape Again - [Scott M. Baker] wants a paper tape punch for his retrocomputer collection. That’s... - hackaday.com/2023/07/11/revers

#pld #linotype #papertape #typesetter #retrocomputing #reverseengineering

Last updated 2 years ago

· @erazmus
173 followers · 296 posts · Server mastodon.social

The serial input/output looks simple enough to reverse engineer. I can see RS232 coming in on pins 2 and 3 of the DB25 but a whole bunch of other pins come in too - I need to locate the 20mA current loop pins.

#retrocomputing #papertape #pdp11

Last updated 3 years ago

· @erazmus
173 followers · 295 posts · Server mastodon.social

Look at this 45-year-old bodge inside the tape punch. I’m glad I’m not the only one that mixes up TX and RX on my serial implementations :)

#retrocomputing #bodge #papertape #pdp11

Last updated 3 years ago

· @erazmus
173 followers · 290 posts · Server mastodon.social

I spent the evening disassembling far enough to start on the cleaning process, and to test the power supply components. Everything looked good, so I powered it up. I can feed the tape and mechanically it appears to be working!

#retrocomputing #papertape #pdp11

Last updated 3 years ago

· @erazmus
172 followers · 287 posts · Server mastodon.social

I have a BAI Data Products model 1230 paper tape punch/reader that is in need of restoration. I also have a PDP 11/05 that I've recently got working, which needs some input/output. I'd like to make the two talk. I can't find any documentation on this thing anywhere. Any chance someone in the Fediverse might have some leads on this thing? It appears intact (other than a missing waste bin) however some documentation would go a long way towards restoring it.

#retrocomputing #retro #papertape #pdp11

Last updated 3 years ago

Evan :verified: · @evro
41 followers · 340 posts · Server techhub.social

@DataLorean on an mainframe! (very briefly). . Then floppies (5 1/4; 3 1/2).

#papertape #hp2000 #punchcards #cassette

Last updated 3 years ago

Eric Furst · @ef1j
129 followers · 34 posts · Server post.lurk.org

Some TTY ASMR as we capture ca. 1975-78 programs from paper tape youtu.be/XY_0_Q2lkT8

#xp #papertape #bitstreamcapture #tty

Last updated 3 years ago

Danie van der Merwe · @danie10
1025 followers · 8622 posts · Server mastodon.social