Welcome to Cemetech! Since 2000, Cemetech (pronounced KE'me'tek) has been teaching programming and electronics and developing software and hardware. Among Cemetech's specialties are TI, HP, and Casio graphing calculators like the TI-84 Plus, TI-Nspire, HP Prime, and Casio Prizm, embedded and DIY electronics, and computer and web programming. Cemetech provides a safe, friendly space for people to learn, show off projects, and share knowledge and expertise. Our staff of friendly volunteers hang out on our forum and IRC and SAX chatrooms, and are happy to help.
Projects of the Month: February 2021
Published by TheLastMillennial 1 month, 1 week ago (2021-12-14T03:36:19+00:00) | Discuss this article

Hello everyone! I know it's been nearly a year since the last PotM, but we haven't given up on them yet! Without further ado, lets get right into the projects:
  • A Cemetech/Texas Instruments manga!: Wavejumper3 is brainstorming some ideas for a manga! Feel free to share your ideas.
  • Banchor: Legend of the Hellspawn (TI-84+CE): JamesV is updating a port of his awesome game Banchor to full color! here's a taste of some of the new version!

  • Cesium: MateoConLechuga has released a highly anticipated update to the shell Cesium! It now supports Dutch, OS 5.6.1, but most excitingly, USB support! If you have a USB formatted in FAT32 you can now run programs off of it!
  • CEyboard: Turn your TI-84 Plus CE into an external keyboard!: TheLastMillennial updated his calculator to keyboard tool to more accurately emulate how the TI-84 Plus CE handles the [2nd] and [alpha] keys. Go ahead and try out the tool if you need to input some math equations or turn your calculator into a numpad!
  • Day of Week Calculate tool for the TI-84 Plus CE: Privacy_Dragon just ported his day of the week calculator to the TI-Nspire! It's made to be accurate for any year including November 22, 1200! (That was a Wednesday)

  • Dragonbot, a discord bot I am making: Privacy_Dragon has finished his discord chat bot which can react and respond to dozens of scenarios! It can be added to any Discord server so go ahead and try it out!
  • Flip Frog [C]: Alvajoy123 is creating a new game where you get to care for a cute pet frog! Despite being early in development, there's already some fantastic sprites and animations for you to take a look at. Go show your support in the thread!

  • gfx3 : A sprite stacking library [C]: Currently, programs which overlay sprites on top of other sprites to give the impression of a 3D world need to implement the stacking from scratch. However, with Alvajoy123's library, all the hard work would be done for you! He's already got some great progress shown in the thread.

  • HASHLIB - Cryptography Library for the CE: Need to ensure that some data for your program isn't tampered with? ACagliano has you covered with a variety of hashes and checksum functions. Check it out for all your cryptography needs!
  • HD Picture Viewer [C] [TI-84 Plus CE]: TheLastMillennial released a quick update for his image-to-calculator converter which upgrades it from a 32 bit to a 64 bit application to ensure compatibility with Mac. If you've been having issues running the application, this update should fix it!
  • Homescreen Hook - SI Prefix Appending tool: Even with Engineering mode enabled, remembering what exponent means kilo or nano is unnecessary and can suffer from human error. Iambian has created a fantastic tool which will add the correct prefix to all your results directly on the home screen!

  • Jetpack Joyride for the TI-84 Plus CE: King Dub Dub has continued working on his amazing port of Jetpack Joyride! Death is now a punishment if you hit an obsticle, and there's even a compiled pre-release you can try yourself!

  • Mario Kart CE - TI-84+CE Mode7 test (previously CSE): tr1p1ea released a small update which fixes his port of the pseudo-3D game Mario Kart. The game will now run correctly on all hardware revisions of the TI-84 Plus CE.
  • Scrabble Cheat Program - Android/Computer Programming: User Cheeze is creating a program to cheeze the game of Scrabble! If you don't like playing by the rules, go give your ideas for features to implement.
  • Sonic TI-Blast for the TI-83+/TI-84+/TI-84+ CE: Oxiti8 is continuing development on his Sonic 3D Blast inspired game! He's now working on some art and an exciting showdown to wrap up the game!

  • Terminal CE: After a bit of a break, commandblockguy has dumped a ton of new updates for his VT100 emulator! Once you connect the program to your computer, it can utilize the computer's terminal. Some of the best updates are the significantly faster scrolling method and a hardware cursor inverting the contents it's displayed over!
  • TI 84 + CE Battle Royale (TIBR) Thread: QuillPlayzYT is developing a new battle royal game in C! They need some support and ideas from the community so check it out if you have ideas!
  • TI-Command Line : Ever wanted advanced control over your TI-84 Plus through a terminal? BioHazard has created a cool program with Celtic III which can install, remove, and update programs; manage a stopwatch; and check the battery level among many other useful features!

  • UNO for the TI-84+ CE: ACagliano has made swift progress porting the popular card game Uno to the TI-84 Plus CE. It's already nearly done with most of the rules implemented! Check out the thread for a demo you can try out!
  • VAPOR - CE Online Gaming and Software Hosting Platform: Ever wanted to create an online multiplayer TI-84 Plus CE but didn't have the hardware to set up a server? ACagliano has made an incredible project which will allow online communication for calculator programs
  • VoxelRay - Blocky voxel raymarcher for the TI-84+CE: mid is creating an awesome 3D voxel program! This means you can explore a 40 voxel cubed world even with terrain!

  • VYSION CE: the ultimate CE shell: epsilon5 is hard at work creating the next version of his Windows-like shell, Vysion. This month he has been developing the library which will handle GUI elements and it's looking really good!

  • X-Wing 2.1 - Revival: Oxiti8 has made tons of updates to his 3D Start Wars game for the TI-83 Plus. You can now fly the ARC-170 Starfigher and the TIE fighter with new difficulty levels! Lots of other work has been done so go check it out!

  • Xlibc Color Picker: It's not always easy figuring out the right color for a sprite especially since calculator screens are not color accurate. Now worries! RoccoLox Programs has created a color picker that works directly from any browser!
  • [TI84PCE] DuckHunt Development [C]: Alvajoy123 is working on an awesome port of the classic Duck Hunt game by Nintendo. He has made fantastic progress implementing the game mechanics so far and has especially nailed the sprite design!


There were a ton of fantastic projects released this month. Remember to vote for your favorite in the poll!
Note: CEyboard is included in this poll since it was mistakenly omitted in January

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Projects of the Month: January 2021
Published by kg583 3 months ago (2021-10-21T03:04:06+00:00) | Discuss this article

We kicked off 2021 with a number of community projects, some just begun and others ready for release. Be sure to check them out!

  • A dragon on the CE!: Privacy_Dragon has begun work on a pet simulator for the CE, hoping to feature feeding, grooming, and other classic virtual pet elements. Can you guess their pet of choice?
  • AC-130 Simulator (TI84+CE): A_VERY_Good_Sir is looking to implement a military-style aerial shooter in C for the CE, based on actual footage from AC-130 gunship footage. The project is sure to be a challenge, but has a lot of potential!
  • bbcode: doing it better (a library): Tari has implemented a Rust library for parsing bbcode, those fun tags you can use to add wacky formatting to your posts. He thinks this is a good step toward improving the site's backend overall, but has also naturally managed to make the library useful for any other developer interested in bbcode parsing and rendering. Check it out on GitLab!
  • BOS (OS+ROM) for CEmu: beckadamtheinventor has published a pre-release of BOS, an open-source OS for the CE. BOS has the wonderful ability to run programs from a USB drive, as well as a number of other quality-of-life improvements to the default TI-OS experience. If you don't want to tamper with your calc just yet, there's also a ROM image for CEmu, so be sure to check it out!
  • Bubbles!: SomeCoolGuy has continued work on their bubble shooter for the CE, tidying up some rendering and gameplay elements. Head over to their GitHub repo to give it a try!
  • CBLConsole, the Cross-Platform CBL/LabPro Utility: CVSoft has modernized their console-based interface for TI CBL devices, rewriting much of the code base from scratch. No release is yet available, so keep an eye out!
  • CEyboard: Turn your TI-84 Plus CE into an external keyboard!: TI recently added the ability for the CE to interface with an external keyboard, but only through a rather non-sensical set of keybinds; TheLastMillennial has taken this issue into his own hands, re-mapping all of the keybinds to a more sleek arrangement. Head over to the GitHub repo to try it out for yourself!
  • Fallout Password Hacking Solving Aid made in Python 3.X: MufinMcFlufin has developed a simple Python tool for cracking virtual passwords in the Fallout series of games, which leverages a bit of frequency analysis to help you solve the games' Mastermind-esque password puzzles. If you're a fan of the games, this a must-see!
  • Genesis X CE: Space Colony Simulator: EverydayCode has completed a visually-stunning space colony sandbox on the CE. Do your best to manage the planet around you in changing environments, all from a beautiful top-down isometric vantage. Check it out on their GitHub repo!
  • gfx3 : A sprite stacking library [C]: Alvajoy123 has begun work on their graphics library for the CE, which builds upon the gfx library to allow sprite stacking. This feature permits a number of complex graphical elements that are otherwise challenging to implement by hand, so keep an eye on its development to see how you can incorporate it into your next project!
  • HD Picture Viewer [C] [TI-84 Plus CE]: TheLastMillennial has greatly improved their popular picture program for the CE, implementing scaling, zooming, and panning. What more could you need? Be sure to try it out on your favorite images!
  • HexaEdit CE: On-calc hex editor: Captain Calc has released version 2.0 of HexaEdit CE, a sleek on-calc hex editor with a number of quality-of-life features. Feedback is always appreciated for its development, and future versions are currently in the works, so be sure to check it out!
  • Hexapawn AI: fXXa has created an AI program on the Casio fx-CG50 to beat any player in the combinatorial game Hexapawn. Though simple in its design, the AI technique is quite robust, being able to best most players after only a few games of learning. Check it out on the archives!
  • iPhoenix's Cemetech Userstyles: _iPhoenix_ has released version 3.0 of his popular userstyle, which seeks to improve the design of many UI elements on the site. SAX improvements and Firefox support are just the tip of the iceberg of new additions, so be sure to give it a try!
  • Jetpack Joyride for the TI-84 Plus CE: King Dub Dub has updated their implementation of the classic mobile game Jetpack Joyride for the CE, adding a number of score/stat trackers and cleaning up the codebase. The project continues to impress, so keep an eye out for its full release!
  • Latest News on TI-Trek: ACagliano has released a small update for TI-Trek, an immersive multiplayer game based on the Star Trek franchise. This project has been in continued development for over seven years and only continues to improve!
  • Library for reading/tokenizing/writing TI vars in PHP: Deep Toaster has begun work on a tool in PHP for reading and manipulating TI vars with the ClrHome toolbox. Development is just beginning, so be sure to keep an eye on its progress!
  • M.U.L.E. CE [C]: KnightsWhoSayNi has begun development on their first game in C for the CE, a recreation of M.U.L.E. for the Atari 800/400. The game looks great so far, but development is ongoing; check out the GitHub repo to see its progress!
  • Rate my architecture!: lennartVH01 has begun designing a simple-yet-practical CPU architecture with rather limited memory and instructions. They're always looking for feedback on the design to ensure it's not totally bunk, so check it out to see if it can in fact run Doom.
  • Super Accurate Stopwatch Using Only BASIC: RoccoLox Programs has released a BASIC stopwatch that can achieve 50 millisecond accuracy. If you're ever caught at a race with only a calc on-hand, Rocco's got your back!
  • Tanks! CE: commandblockguy has continued to improve their exciting clone of Tanks! for the Nintendo Wii. Development is ongoing, with a complete redesign of the underlying graphics, so be sure to check out its current progress.
  • Mario Kart CE - TI-84+CE Mode7 test (previously CSE): tr1p1ea has released another update to their stunning Mario Kart clone, improving racer AI and a number of graphical details. The build is still unstable, but lots of fun if you want to give it a whirl!
  • TI-Command Line α: BioHazard has continued development on a on-calc command-line interface using Celtic III. The interface will be able to interact with a number of system utilities as well as run loaded programs. Be sure to check it out!
  • TIGHT: TI GrapH Theory: kg583 has continued work on his graph theory library in BASIC, adding a number of new graph algorithms and other analysis programs. New additions and other suggestions are always welcome, and you can check out the current progress on the GitHub repo.
  • X-Wing 2.1 - Revival: Oxiti8 has released their own modern update to X-Wing 2.0, a 3D Star Wars shooter originally for the TI-83. The update includes a number of bug fixes and graphical improvements while remaining true to the original's gameplay experience. Check it out on the archives!
  • XWING III (my first (public) game): HacksAndSlash has released a sequel to an original BASIC shooter game of their's, now written in C++ and loaded with all kinds of fancy features. (Note: bears no relation to X-Wing by Oxiti8, but is just as fun!)
  • [TI-68k] CBLM, a Modular CBL/CBL2/LabPro Interfacing Program: CVSoft has finally made headway on a long-teased Python implementation of their custom CBL software for the TI-68k series. This project aims to fill a disappointing void in such software, and has already proven its potential. Check it out!
  • [TI84PCE] DuckHunt Development [C]: Alvajoy123 has begun development of their port of the classic game Duck Hunt to the CE. The graphics are clean, the gameplay is great, and the ducks are, well, ducks! The project continues to see active development and updates, so be sure to keep an eye out for the full release!

And that's all for January! Be sure to vote for your favorite completed project and stay tuned for February's PotM!

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Cemetech Projects of the Year 2020 Results
Published by Michael2_3B 4 months ago (2021-09-21T01:13:40+00:00) | Discuss this article

Well folks, the poll for Projects of the Year 2020 has ended, and it is time to announce the results!

In 6th Place, we have 5 projects:
  • Sudoku CE by Jeffitus. This fun puzzle game for the TI 84+ CE allows you to play Sudoku in a clean, simple, and distraction-free environment.
  • Hue CE by epsilon5. Hue CE is a colorful shooter game, requiring you to quickly and accurately shoot specific targets.
  • Contagion CE by epsilon5 and EverydayCode. This Plague, Inc. port is focused around simulating a global virus, much like the covid pandemic.
  • FPGA as ti link cable by rv68k. This incredible hardware project transfer data nearly 2x faster than a normal TI cable!
  • Calculator in Minecraft by _iPhoenix_. This large and fully functional redstone calculator in minecraft was built to look just like an 84+ CE!


In 5th Place, we have 4 projects:


In 4th Place, we have Nesizm by tswilliamson. This project is an NES emulator for the Casio Prizm, and supports many of your favorite classic games at full speed!

3rd Place goes to 2 projects:
  • HailStorm CE by epsilon5. HailStorm is a fun and graphically-pleasing shoot 'em up game for the TI 84+ CE in which you must navigate a spaceship through an asteroid field.
  • Cemetech Userstyles by _iPhoenix_. This project entails various stylistic and functional improvements to the Cemetech website through the power of chrome extensions.


In 2nd Place, and getting 24% of the votes, tihle by Tari is a project which allows for the emulation of many popular games for the monochrome calculators, and implements many of TI's routines in Rust without using any of TI's code.


And finally, in 1st Place, and getting 28% of the votes in the poll, we have the 2020 Project of the Year:
VYSION CE by epsilon5!
epsilon5 has worked very hard on this project, which is a Windows-like shell for the TI-84 Plus CE/TI-83 Premium CE calculators, and that has many, many features, including a spiffy UI, file operations, program launching, numerous customization options, and more. Be sure to congratulate epsilon5, and download this impressive and very spiffy project!



Thank you to all of our members that competed in the poll, and be sure to keep the great projects coming!

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Projects of the Year: 2020
Published by _iPhoenix_ 5 months ago (2021-08-27T01:40:44+00:00) | Discuss this article

Hello everyone! It is that time of year again; time for reviewing the Projects of the Year for the year of 2020.

Let's get on with the projects!

Our first notable project, from the month of January, is the Zilog Z8671 BASIC/DBG Pocket Computer by Botboy3000. This mostly-hardware project sported many 3d-printed parts, dozens of lovingly-placed vinyl decals on the keys, and no small number of wires on the inside. The project did extremely well in the January Projects of the Month poll, earning itself nine out of the ten votes cast.


The completed project with decals, a screen, and keys. Click to enlarge.


From the month of February is HailStorm CE by epsilon5. Winning all but one of the nine votes that month, this project is an original CE game with great graphics. The game features addicting gameplay, unlockable ships with space lasers, boss fights, and more.


Gameplay Sample


Next up is the month of March, won by NESizm by tswilliamson with five out of the seven votes cast. Finally released to our archives after a long break in progress, this impressive NES emulator for the Casio Prizm supports running many of your favorite classic games at full speed.


NESizm running Donkey Kong on a CG10. Click to enlarge.


For April, the program Sudoku CE by Jeffitus took the cake in its PotM poll with ten out of thirteen votes. Featuring fast puzzle generation and a very clean UI, this distraction-free sudoku affords hours of puzzle-solving fun.


A generated puzzle showcasing the UI


May was a hotly contested month with two winners. Tied with nine votes each out of twenty votes cast, this month's winners are Calculator Water Cooling by AlexTheGreatish with LinusTechTips and Plane Jump by Iambian. The former uses a PC water cooling system to "aid" the overclocking of a monochrome graphing calculator. The latter is a recreation of an online game with neat perspective and spray paint and explosions.


Plane Jump Gameplay Sample


In June there was significantly less competition. HUE CE by epsilon5 swept the polls, receiving nine out of sixteen votes. This game is a colorful shooter requiring both accuracy and speed to master.


Gameplay Sample


July had many competing projects but tihle by Tari, a Cemetech Administrator, won handily. This project implements many of TI's routines in Rust without using any of TI's code. It allows for the emulation of many popular games for the monochrome models, notably PatrickD's game Phoenix.


The logo of the tihle project


From August came a flurry of projects marking the start of the school year. The winner this month was Contagion CE by epsilon5 and EverydayCode, with seven out of the sixteen votes that month. This Plague, Inc. analogue has an excellent video to go with it and can provide hours of entertainment.


Gameplay Sample


September had the first release of the Cemetech Userstyles started by _iPhoenix_. The userstyle brings various stylistic and functional improvements to the Cemetech website. It did very well in the polls, recieving nine out of the twelve votes submitted.


A section of a page viewed with the userstyle active. Click to enlarge.


October's featured project was FPGA as ti link cable by rv68k. Written using the Verilog hardware description language, it provides nearly a 2x speed improvement over the official SilverLink cable. It won 6 out of 13 votes this month.


A view of this project in action. Click to enlarge.


November had another tie, between Calculator In Minecraft by _iPhoenix_ and Maze Dash CE by matkeller19. The Calculator in Minecraft thread details the design process of a large redstone calculator that was built up by the author on the Cemetech-MC 1.16 server. Maze Dash is a port of a mobile game with nearly 300 levels. The port has very clean graphics and is enjoyable to play. Both projects received 9 out of 25 votes.


A shot of the underside of the calculator, showing the case and some of the wiring. Click to enlarge.

Maze Dash Gameplay Sample


The last notable project this year, for December, is VYSION CE by epsilon5. The 1.0.0 release of his shell features a spiffy UI, file operations, program launching, and numerous customization options. It earned 13 out of the 19 votes cast that month.


Showcasing menuing and file operations in the shell



That's all from me for this post- remember to evaluate each project before voting in the poll for our Project of the Year!

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