General > General Technical Chat
Making the HP Prime a great EE calculator (Poor man's Casio FX-61F)
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tooki:

--- Quote from: TopQuark on January 18, 2023, 07:23:45 pm ---Besides lacking EE specific keys and functions, the other thing I noticed about the Prime that I didn't like, is the poor viewing angle of the screen when the Prime is laid flat.

--- End quote ---
Yep, that’s the consequence of the display being installed upside-down. The Prime’s hardware engineers warned about this, but it was done for some reason.

Nice solution! Is it stable enough?
TopQuark:

--- Quote from: tooki on January 19, 2023, 07:00:37 pm ---
--- Quote from: TopQuark on January 18, 2023, 07:23:45 pm ---Besides lacking EE specific keys and functions, the other thing I noticed about the Prime that I didn't like, is the poor viewing angle of the screen when the Prime is laid flat.

--- End quote ---
Yep, that’s the consequence of the display being installed upside-down. The Prime’s hardware engineers warned about this, but it was done for some reason.

Nice solution! Is it stable enough?

--- End quote ---

It is stable enough to withstand forceful pressing of all buttons and touch screen, and stay in place even when placed on smooth glass, I think unless you are trying to knock it over or shove it around, it will stay up. I find it to be more stable than my Fluke 87V kickstand for example.

I'm printing the latest (hopefully last) iteration of the stand, will upload the files tomorrow if everything works out.
TopQuark:
It's done! My 3D printed kickstand for the HP Prime that doubles as a slide cover.

https://github.com/TopQuark12/primeKickstand
jonpaul:
Had HP-41C, in 1980s..1990s, made a lot of EE programs on the mag tape stripes.

Recently a friend restored the HP-41C and mag tape reader...works great!

in 1960s..1970s, Tektronix gave out The old pré electronic
Tektronix Circuits Computer


Still have and use them!

Jon
TopQuark:

--- Quote from: jonpaul on January 23, 2023, 02:05:59 pm ---in 1960s..1970s, Tektronix gave out The old pré electronic
Tektronix Circuits Computer


Still have and use them!

Jon

--- End quote ---

Oh wow, that looks amazing. I wonder if I can recreate a modern open source version that can be laser cut and made cheaply.
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