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» Community Crafted Calculators
» Doors CSE 8.1.2 Brings Bugfixes, Compatibility
» Projects of the Month: November 2014
» ArTICam: Game Boy Camera Photos with a Graphing Calculator
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Community Crafted Calculators
Published by comicIDIOT on December 20, 2014 at 2:29:44 PM CST | Discuss this article (4)
We have some exciting hardware developments from our members. A few of our members either have, or are in the process of, creating their own calculators. These calculators range from emulated TI models or calculators inside TI cases, to completely new calculator models and operating systems.
Member Muessigb is working on a RaspberryPI calculator which emulates the TI-84 Plus. The project started when his original TI-84 Plus died: he had a Raspberry Pi and thought he could emulate it with the Pi while still using the calculator's shell.
Then we have PiCaso created by PiCaso. Similar to Muessigb, PiCaso has stuck a Raspberry Pi into a Casio fx-83 ES. PiCaso is built from Wolfram Alpha's Mathmatica software(Link for rPi Version). It runs faster than the Casio but admittedly, and perhaps obviously, slower than the desktop version. The calc uses an e-Ink screen for the low power consumption and because it's cool. Seriously.
There's also a new user on our forums, hynek, who has created a replica of the TI-86. Hynek's main goal was to learn and understand STMicroelectronics' STM32F4 multipoint control unit, or MCU, which is based on ARMs' Cortex-M4. His replica is a complete, functioning copy of the TI-86, can run the original calculator's operating system, and can even run programs for the original TI-86. It seems he has learned a lot from his project and has since carried on to bigger tasks, hopefully utilizing his new knowledge of the MCU as best as possible. He put a lot of research into this, from learning stuff about the TI-58 from ROM dumps to properly managing power consumption. He chose the TI-86 as he required its functions for his day-to-day calculations.
While this next project doesn't have a topic on Cemetech it is certainly notable. The ArithMax is being developed inside a Casio shell. The software runs on a Cortex-M4, similar to hyneks' TI-86 replica above. It seems the developers are creating a new type of calculator. It has an SD card slot and a slew of other nifty features including Ethernet capabilities (but no RJ45 port due to the size of the connector). For more updated info on this project check out TI-Planet(Translated), check out the source (Translated), this page and of course the source link to the post here at Cemetech. We have reached out to the ArithMax authors and hope they'll find time to swing by to tell us more about this impressive project.
Even our very own KermMartian has a "TI-87" in development. While TI never created a TI-87 calculator (as far as we know), it's instead a name coined by Kerm for his Odroid-W Development board based TI emulator. The plans for the project are to fit this into a TI calculator shell, which seems to be a TI-83+SE, and to support the emulation of multiple TI calculator families: from the TI-73 to the recent TI-84 C SE, with future plans to hopefully support the 85 & 86 (I think we see where the TI-87 came from now!). As far as emulation goes, he plans to use jsTIfied but if it runs too slow then he'll use TILEm(2?). We have yet to hear back on what works best for his project but there's plenty of other updates and details to keep us interested in the meantime.
Though it's amended on to the PiCaso topic, LibreCalc is worth mentioning here. Running a look-a-like TI-82 OS, it sports 128MB of RAM - wow! The LibreCalc project was recently mentioned on Hackaday; as the name implies, it combines completely open-source hardware and software into a free-as-in-speech graphing calculator. The plans and specs for everything from the OS to the PCB to the 3D-printed case and keys are freely available, and we salute the creators for their hard work. As with the ArithMax project, we hope to be able to bring you more updates directly from the creators soon.
If you wish to follow up on any of these projects please follow the bolded links to the proper topics. Ask questions or just read up on the previous discussions.
From Left to Right: TI-86, PiCaso, LibreCalc
Doors CSE 8.1.2 Brings Bugfixes, Compatibility
Published by KermMartian on December 4, 2014 at 8:50:02 PM CST | Discuss this article (6)
Doors CSE 8 is the first and currently only assembly shell for the TI-84 Plus C Silver Edition, TI's flagship color z80 calculator. Built on the Doors CS 7 codebase, it lets you run any kind of TI-BASIC or assembly program, run and edit archived programs, use extra functions in TI-BASIC programs, and offers myriad additional features to make the TI-84+CSE more powerful. The most recent big update to Doors CSE was Doors CSE 8.1 in July: it brought new Hybrid BASIC functions, the ability to list and run Applications, and many bugfixes. Doors CSE 8.1.1 was subsequently released in August, and now Doors CSE 8.1.2 is available. These new updates bring the following fixes:
Doors CSE 8.1.2
Projects of the Month: November 2014
Published by KermMartian on December 1, 2014 at 3:30:08 PM CST | Discuss this article (10)
Another month has ended, and December is upon us, which can only mean that the time has come for another Projects of the Month (POTM) article! As always, administrator tifreak8x has selected the most interesting and exciting projects created or updated on Cemetech in the past month for your enjoyment. Without further ado, here's what Cemetech's ingenious members have been working on this month:
We hope that you're hard at work on your Cemetech Contest #13: Games with Cats & Space contest entry, and we look forward to bringing you more exciting projects at the end of the year. Who knows; perhaps we'll decided to have a little Program of the Year (POTY) of our own...
ArTICam: Game Boy Camera Photos with a Graphing Calculator
Published by KermMartian on November 28, 2014 at 2:29:48 PM CST | Discuss this article (8)
For several years, the idea of video-chatting using graphing calculators and globalCALCnet has been jokingly tossed around on Cemetech. More realistically, ideas about connecting a Game Boy camera to a graphing calculator have been discussed here for at least three years; as early as 2004, the users of United-TI were discussing the feasibility of such a project. In February 2011, Cemetech administrator Merthsoft and I bought Game Boy cameras for such a project, but for over three years, my camera lay unused in my toolbox, disassembled but forgotten. Two weeks ago, a discussion during our weekly Have Calculator, Will Program (HCWP) teleconference led me to pull it out and seriously consider connecting the camera to a calculator.
The recently-published ArTICL Arduino-TI Calculator Linking library made this project quite straightforward by providing an easy way for an Arduino to talk to a calculator. The Game Boy camera requires six digital I/O lines and one analog line, so it could not be connected directly to a calculator, but an Arduino turned out to be a perfect platform to use for controlling the camera. In fact, existing code for interfacing the Game Boy camera's M64282FP image sensor and AVR microcontrollers already existed, and combining this with ArTICL turned out to be the work of a few days. With no additional hardware beyond an Arduino and a Game Boy camera, monochrome or color graphing calculators can now take and display photographs. In fact, because the Arduino pretends to be a calculator (or in some cases a CBL2 device), absolutely no extra software is required on the calculator. To take a picture, you simply use the GetCalc(Pic1) command, and a photograph from the camera will be stored as picture Pic1 on the calculator. You can also read and write the M64282FP's registers as TI lists (arrays), allowing the calculator to adjust parameters like brightness and contrast.
More pictures and documentation about this project can be found at the link below, including the firmware and wiring information to build this project yourself. I challenge you to try building this so you can take your own 128x123 or 64x64-pixel photos with your calculator!
ArTICam documentation, hardware, and firmware
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