Graphing calculator feat. STM32F412VGT6

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zmemw16
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Re:Graphing calculator feat. STM32F412VGT6

Post by zmemw16 » Wed Sep 06, 2017 10:13 pm

at school, we only had slide rules and log tables.
my dad found a couple of cylindrical slide rules and some 10 place (or more ??) log tables.
i've a 'standard' slide rule on my bookcase, i do wish i'd managed to snaffle one of the cylinders though.
stephen

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ahull
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Re: Graphing calculator feat. STM32F412VGT6

Post by ahull » Wed Sep 06, 2017 10:43 pm

I also learned how to use slide rules and log tables, long division and how to manually calculate square roots (though I'm not sure if my ancient grey matter could still manage that last task).

I guess I'm the crossover generation (also known as an old fart :lol: ).

Pocket calculators weren't a thing, until I was in secondary school, and I still have a slide rule or two somewhere.

I also learned engineering drawing on proper draughtsman's tables, with t-squares, propelling pencils and Rotring pens, just as CAD was starting to become more mainstream.

As a result, I'm actually pretty good at sketching and drawing by hand.
- Andy Hull -

zmemw16
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Re: Graphing calculator feat. STM32F412VGT6

Post by zmemw16 » Thu Sep 07, 2017 2:52 am

1st angle projection - look and put on other side.
3rd angle projection - look, bounce and put on same side.

one of the tutors, always have pencil and paper to hand, a sketch and words etc, etc.
similar for sketching, they usually end up as an isometric view, 30 or 45 degrees :lol:
i'm currently classing myself as a sad old git :!:
'O' level grade 4 - same for metalwork. then in Uni 1st year, intersecting / crossing tubes. develop the cut outs.
and before you ask, no chance. actually maybe not. funny how memory works, just enough to recall the other bits.
had someone looking at my answer in the tech drawing exam.
i explained it to him afterwards. :twisted:

stephen

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zoomx
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Re: Graphing calculator feat. STM32F412VGT6

Post by zoomx » Thu Sep 07, 2017 6:33 am

I learned to manually calculate square roots too but not slide rules, I believe that where not in use in italian school. I too learned basic geometric drawings at school between 11 and 13, then artistic drawings and finally engineering drawing at university.
I still have Rotring and Staedler ink pen.
But then I started early using CAD, main reason was that it was very simple to duplicate a drawing.
I started drawing cave maps, I was a caver but I am still able to go in simple caves without very long pits.

zmemw16
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Re: Graphing calculator feat. STM32F412VGT6

Post by zmemw16 » Thu Sep 07, 2017 11:15 am

my mother worked as a tracer before marrying.
somewhere i have one of her tracings, cross section of a jet engine, about 10ft by 6ft.
stephen

ag123
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Re: Graphing calculator feat. STM32F412VGT6

Post by ag123 » Thu Sep 07, 2017 12:46 pm

our stm32duino calculator does a different feat, it isn't quite that beautiful but maybe it is possible to draw an fft chart on an ili9341
what our stm32duino calculator excel at is that it can crunch floating point numbers at 500 mflops - no other beautiful stm32 f4 calculators may come close, but that's provided you use *single precision* math and hardware floating point and overclock the stm32f407
http://www.stm32duino.com/viewtopic.php ... &start=160
:lol:

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