Notes from Virtual Meeting 25th July 2020

Attendees:


Eddie Shore (California), Eric Rechlin (Texas), Nigel Fraser Ker (England), Martin Macrae (England), John Struthers (Scotland), Wlodek Mier-Jedrzejowicz (England), Nigel Rumble (England), Bruce Horrocks (England), Bob Prosperi (New York), Sylvain Cote (Quebec, Canada), Johnny Bjørn Rasmussen (Denmark), Bob Penick (South Carolina), Frank Kingswood (England), David Hayden (New Jersey) and Mark Power (England).


Discussions:


1) Lots this time on the HP-41, celebrating its 41st Birthday with an HP-41 themed edition of Datafile and 3d printing replacement parts for the HP-41 and other HP calculators:

https://www.thecalculatorstore.com

https://www.shapeways.com/shops/wants_beer

2) Powering the HP41 from USB:

https://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv020.cgi?read=183722#183722

3) New add on for HP-41 IOnix41 that uses all new components 

https://www.hpmuseum.org/forum/thread-14472.html

4) HP-41 battery pack

https://www.thingiverse.com/thing:123278

5) HP-41 Card Repair

https://youtu.be/qe4jJRJDQbc

6) HP Serial Numbers, covered in Wlodek’s book and also at

https://serial-number-decoder.co.uk/hp-calculator/hp-calculator.htm

7) Link to a new 3D Printed design for Calculator stand for 41C, Pioneers and DM42/DM41X:

https://www.hpmuseum.org/forum/thread-15161-post-133168.html#pid133168

https://www.thingiverse.com/thing:4439055

8) 3d printers and software:

https://www.prusa3d.com

9) 3d printing (non-functioning) parts for vintage jet aircraft at:

https://hawkertyphoon.com

https://jetagemuseum.org

10) List of HP calculator parts and 3d replacements:

https://www.hpmuseum.org/forum/thread-10769.html

11) 3d printable for HP-97 and HP Cassette drive battery case:

https://www.thingiverse.com/thing:3126870

12) General site for fixing stuff and handy tools

https://www.ifixit.com/

13) Screen scratch restoration:

https://www.polywatch.de/en/

https://www.amazon.com/Polywatch-Plastic-Lens-Scratch-Remover/dp/B0014R9V9O

14) Discussion about keeping batteries (and film) in the fridge. Non-leak batteries for HP-11/12/15/16: use SR44 (silver oxide) rather than LR44 (alkaline).

15) Ham Radio call signs:

Martin 2E0KZU

John GM8CVN

Bob KE4BNJ 

Comments

  • Thanks for the details and the links - I had a headache and couldn't make it.

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