Author Topic: [new_calc] New Calc project ... with cas engine /!\  (Read 45803 times)

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Offline Lionel Debroux

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #135 on: January 11, 2013, 06:13:09 am »
FWIW, the process of designing, writing and debugging/testing even 50K SLOC is a highly time-consuming task... man-months, full-time.
(granted, anyone can build a 50K SLOC C/C++ program in a matter of minutes - but then it's a highly peculiar program which doesn't represent real-world code)
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Offline Lancelot_du_lac

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #136 on: January 14, 2013, 03:44:01 am »
yeah i know, not a easy task. I'm a fast guy, i need learn some more concepts skills to be able to start it right. With only a few hours per week i can do more than 1k per week. I did last week arround 730 for a robot in 6 hours. ( in C ) and i did it a bit slow because this prog was using some advanced automatic concept of multitasking.
« Last Edit: January 14, 2013, 03:47:03 am by Lancelot_du_lac »

Offline _Nicco_

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #137 on: February 05, 2013, 01:45:25 am »
I really do want to help but this is way out of my league.  I need to learn a whole lot more before I can even begin to start trying to help.  I'll be learning C then moving to C++.  It seems like that is the way to go since they are very similar and C is just good to know.

Is there anything new going on?  So far is there anyone else developing for this besides you?
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Offline Lancelot_du_lac

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #138 on: February 06, 2013, 06:36:56 am »
Status :

i started today really coding. Why i waited so long ? Because i needed skills that i didn't have before, and time too. My main objectiv is my studies. I'm doing the real base of the math engine now, in project for my studies my c++ teacher approved, so it's gonna move really now. My objectiv in this project is the math data containairs and the numeric solver. So it's a good start for the whole final project.

There is people interested in but no c++ coders yet.

i hope some people will get some time to help soon.

Offline Matrefeytontias

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #139 on: February 06, 2013, 06:38:52 am »
I know C++, maybe I'll help with the parser or something.

Offline Lancelot_du_lac

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #140 on: February 06, 2013, 12:34:33 pm »
nice

Offline DJ Omnimaga

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #141 on: February 06, 2013, 11:26:54 pm »
Yeah an issue is that most people on Omnimaga mostly know java or python and very few know C++. Good luck on this project and I'M glad it is still alive :) (Someone was asking on IRC last night I think)
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Offline ruler501

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #142 on: February 06, 2013, 11:48:59 pm »
If I see a proof of concept for the hardware I will gladly help. I know C/++, some java, and python
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Offline Lancelot_du_lac

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #143 on: February 07, 2013, 12:54:44 am »
My friend, that is doing the same studies as me, said me he's ok to route the printed circuit board for that project. But for now he's finishing a robot for the french robot cup.

The Hardware will be on a 7" screen, with a laptop style for the keyboard. CPU is on ARM, we've found a lot of interesting CPU, @ around 500mhz+. So we wait the starting of routing to make choices on that.

Like i said before Hardware will not be a problem for us, it's gonna be my job soon. The case must be more difficult for us. Sounds crazy but it's true, i've heard of old students that i've done other projects and got the same problem.

Like i said before it's around 3 years project. So it's normal that it start & looks slow. I'll finish my studies next year too.


Offline willrandship

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #144 on: February 07, 2013, 01:38:26 am »
Well, you can't start making a case until you have the hardware down, otherwise you won't know the dimensions of the screen, board, keypad, etc. available for the design. You can make all the proof of concept drawings you want, but none of them will matter until that information is known.

Offline Lionel Debroux

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #145 on: February 07, 2013, 02:02:51 am »
Definitely agreed, the case is a secondary matter until you've validated the first prototype boards by testing on real hardware.
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Offline Lancelot_du_lac

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #146 on: February 08, 2013, 12:42:16 am »
The most important in the hardware case, is the choice of the screen. That part is done. The PCB will be small and battery a bit large.

Offline _Nicco_

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #147 on: February 08, 2013, 09:40:50 pm »
What screen will you be using?  7 inches sounds a little big for a calculator.
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Offline willrandship

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #148 on: February 08, 2013, 10:05:03 pm »
As long as it's cost effective, a big screen never hurts. Character size needs to be low for ACT standards, but that's not difficult.

I still think you underestimate the work in laying out a PCB, with CPU, RAM, battery, and I/O all handled properly.

Offline DJ Omnimaga

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Re: [new_calc] New Calc project ... with cas engine /!\
« Reply #149 on: February 08, 2013, 10:54:09 pm »
A big screen is OK if you can make much use of the space around the screen. Just have as less buttons as possible, while still having the ones we need to access regularly. On the TI-92 in addition to 2nd there is also a Shift and Diamond key. Basically layout the buttons on each side of the calculator and have a string of F keys at the bottom or something in a way that the calc remains as small as possible and fit in our pocket.
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