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'[PIC]: HP Calculator project source code'
2016\09\16@053344 by Anthony Nixon

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Hi all,

Not sure if anyone is interested but I published the source code for
the calculator emulator for the PIC16F1519 chip.

It has the code to emulate the following HP calculators from the 70's era.

HP21, HP22, HP25, HP27, HP29C, HP31E, HP32E, HP33E, HP37E, HP35, HP45,
HP55, HP65, HP67, HP70, HP80

http://www.teenix.org

cheers

Tony
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2016\09\16@083917 by Chris Roper

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Thanks Tony,

I for one appreciate it and look forward to reading that page in full.

Cheers,
Chris


On Fri, Sep 16, 2016 at 11:33 AM, Anthony Nixon <spam_OUTtnixon059TakeThisOuTspamgmail.com> wrote:

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2016\09\16@094352 by Neil

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Wow, this is great.  Is the PCB sized to fit an original case?

Cheers,
-Neil.



On 9/16/2016 5:33 AM, Anthony Nixon wrote:
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2016\09\16@100638 by Harold Hallikainen

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>  Hi all,
>
> Not sure if anyone is interested but I published the source code for
> the calculator emulator for the PIC16F1519 chip.
>
> It has the code to emulate the following HP calculators from the 70's era..
>
> HP21, HP22, HP25, HP27, HP29C, HP31E, HP32E, HP33E, HP37E, HP35, HP45,
> HP55, HP65, HP67, HP70, HP80
>
> http://www.teenix.org
>
> cheers
>
> Tony

This is fantastic! I still have my HP-35, though it needs some work.

THANKS for posting!

Harold



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2016\09\16@175440 by RussellMc

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​
On 16 September 2016 at 21:33, Anthony Nixon <.....tnixon059KILLspamspam@spam@gmail.com> wrote:

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Thanks Tony - I'll (again) pass this on to a friend who at one stage set
out to interface to an HP35. It was stolen part way through the process.

For interest - I didn't see it mentioned - it may have been - the T
register on an HP35 used to be corrupted by certain operations. Sin at
least and I think some other transcendental functions. Ran out of room I
guess. Does your emulator provide that "feature" ? :-).

When will the 3D printed cases be available ? :-) :-) :-) :-)



     Russell
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2016\09\16@182233 by Anthony Nixon

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> Wow, this is great.  Is the PCB sized to fit an original case?

No, that would be a large undertaking, but I know someone who is
trying to come up with a drop in replacement cpu board. The
display/keyboard pcb is separate and big problem is that the original
LED drivers are somewhat complicated with inductors directly dumping
charge into each led segment and a fairly complex sequence of events
to make it work.

cheers

Tony


On Fri, Sep 16, 2016 at 11:43 PM, Neil <picdude3spamKILLspamnarwani.org> wrote:
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2016\09\16@182808 by Anthony Nixon

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Russell wrote:

For interest - I didn't see it mentioned - it may have been - the T
register on an HP35 used to be corrupted by certain operations. Sin at
least and I think some other transcendental functions. Ran out of room I
guess. Does your emulator provide that "feature" ? :-).

I didn't know that, but the first models did have the LN conversion
bug. My original microcode does not have that problem, so must be a
later version.

> When will the 3D printed cases be available ? :-) :-) :-) :-)

I thought of that but - man what a task, and I could never come up
with a keyboard that worked and felt as good as the originals. 40+
years of use and still going.

cheers

Tony

On Sat, Sep 17, 2016 at 7:53 AM, RussellMc <.....apptechnzKILLspamspam.....gmail.com> wrote:
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2016\09\16@184540 by Anthony Nixon

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Hi all,

I forgot to mention that the PIC code interacts with the Windows PC
emulator. It uploads the microcode data to the PIC via the USB port to
make it function as any of the listed calculators, plus it can upgrade
the compiled emulator code if it needs tweeking.

cheers

Tony

On Sat, Sep 17, 2016 at 8:28 AM, Anthony Nixon <tnixon059spamspam_OUTgmail.com> wrote:
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2016\09\16@184705 by Neil

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I recently learned to use Autodesk Inventor (for high-school robotics mentoring I do), and was thinking a 3D-printed OEM-looking case would make a nice project, even if the displays are different. I'll make the time to read through this over the weekend.

Cheers,
-Neil.



On 9/16/2016 6:22 PM, Anthony Nixon wrote:
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2016\09\16@215159 by Anthony Nixon

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The bubble LED displays on the emulator board are much the same as the
original, except they have an extra digit. (I didn't know the
originals had 3 x 5 digit modules at the time, so mine has 4 x 4 digit
modules. These HP displays were really cheap (about 0.70c per digit),
but sadly they are no longer produced so some scrounging will be
required. The PCB and PIC code can also drive a 2 x 16 LCD display but
doesn't quite look the part.

I was looking around for a red OLED display of similar dimensions but
couldn't find anything and they don't seem to be cheap.

cheers

Tony

On Sat, Sep 17, 2016 at 8:47 AM, Neil <spamBeGonepicdude3spamBeGonespamnarwani.org> wrote:
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2016\09\17@000007 by Jean-Paul Louis

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Hi Neil,

Do you mentor for FTC or FRC competitions?
I was myself a mentor of two FRC teams for the 2015-2016 FIRST competition.
This season, we will add an FTC team to the group.

I heard that some teams used Inventor. We used Solidworks for FRC last year..

Just curious,
Jean-Paul
N1JPL



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Just my $0.02,

Jean-Paul
N1JPL




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2016\09\17@003235 by Neil

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Yep... been doing FRC since 2008, and in the past year I had stepped back a bit for personal reasons, but back in circulation now and being an on-call consultant of sorts for a few FRC teams in the area (if they need any help, I'm available, but not being a dedicated full-time mentor for any of them for now).
I'm also doing my first FTC gig with a small school this year, which started last week.

Which team are you with?

Cheers,
-Neil.




On 9/17/2016 12:00 AM, Jean-Paul Louis wrote:
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2016\09\17@104610 by Michael Johnston

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Hi, Speaking of the led bubble displays are there any sources for them in
the USA. I did a search and couldn't find any.
Thank you Michael J

On Fri, Sep 16, 2016 at 11:32 PM, Neil <RemoveMEpicdude3spam_OUTspamKILLspamnarwani.org> wrote:

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2016\09\17@182304 by Anthony Nixon

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Non USA - but Pimoroni and Tronixlabs still have them listed for sale.

Ebay had some listed

cheers

Tony

On Sun, Sep 18, 2016 at 12:46 AM, Michael Johnston
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2016\09\17@185401 by Michael Johnston

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Hi Tony,  thanks for info and I will look for those sellers on line. I have
an old TI 35 display somewhere but its integrated with the controller on
board I think but I will dig it out and have a look at it soon.
Michael

On Sat, Sep 17, 2016 at 5:23 PM, Anthony Nixon <EraseMEtnixon059spamEraseMEgmail.com> wrote:

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2016\09\17@222407 by Dwayne Reid

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Probably not well known, but Telex / RTS KP-96 Intercom Keypanels (and EKP expansion panels) use 4-character bubble displays.  These Intercom panels can often be found inexpensively on eBay.  Nothing wrong with these old panels - they still work with the most recent versions of the Adam Intercom system. However, the newer panels not only have higher key count (31 for a KP-32 vs 15 for a KP-96) but also are MUCH easier to use.

Search terms on eBay: Adam, kp-96, ikp-96, ekp-96.

My buddy has dozens of these Keypanels and I'm going to be robbing displays from a couple of the units that I'm currently scavenging other parts from.

dwayne


At 08:46 AM 9/17/2016, Michael Johnston wrote:
>Hi, Speaking of the led bubble displays are there any sources for them in
>the USA. I did a search and couldn't find any.
>Thank you Michael J


-- Dwayne Reid   <TakeThisOuTdwaynerKILLspamspamspamplanet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
780-489-3199 voice   780-487-6397 fax   888-489-3199 Toll Free
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