Published by TheLastMillennial 3 weeks ago on Dec. 26, 2025, 9:29 p.m. | Discuss this article

Welcome back to a new month of awesome projects! Let's jump right into it.

• 8xk Disassembler: ti_kid has started work on turning .8xk files into binary files for use with hex editors. There's a download available so you can try it yourself!
• Befunge Interpreter for the Ti83+ line of calculators: Everyone loves a good esoteric programming language so Jeff calc 84 has started making Befunge compatible with the TI-84 Plus! Visit the thread to see what's special about this unique language, as it joins many previous Cemetech projects like Nonsense, Beatnik, Spyrodecimal, and most importantly, Merthese.
• Breakout Ti84ce (breakout like game): Cosmicfasttravel updated their breakout game with a level editor. The possibilities for levels are endless so go try making your own!
  
• Building Own OS: ti_kid is learning about creating their very own TI-84 Plus OS. It's very primitive at the moment but the code is posted so you can take a look yourself.
• CE C tooling in your browser: Displeased with the now-outdated infrastructure needed to run the server-side C compiler that supports C programming in SourceCoder 3, Tari has created a proof of concept compiler that runs directly on your browser! This was no easy feat requiring x86 emulation in the browser. The code and juicy details are in the thread, and it should arrive in SourceCoder itself soon.
• CrossBun: Crossword program for the TI-84+ CE: euphory was enjoying commandz's crossword puzzle game so much, they took it upon themselves to fix a bug where long clues wouldn't display correctly. commandz has accepted the code update so you can see it for yourself!
• eMMUlate: TI Nspire CX II btrom keys extractor!: For those that want to emulate their TI Nspire CX directly on their computer, satyamedh has released a tool that allows a user to extract BootROM keys for use in the firebird emulator. There's a full blogpost with a full technical explanation too!
• FamiCalc - an NES emulator for the TI-84 Plus CE: Zaalane has published the first pre-compiled version of their NES emulator. Just a few days later, Tari managed to get the emulator's ROM converter working in a web browser to simplify the user experience!
• Github Skyline - Your Github Contribution Story in 3D: Battlesquid posted their Github contributions for the year as an awesome 3D-printed visualization! There's a web converter so you can easily turn your very own contributions into a 3D model. It could be the perfect desk ornament!
  
• LaTeX compiller from TI-84 Plus CE: danisoares08 is working on a project that will allow a subset of the LaTeX markup language to be viewed on your calculator! This would make viewing formatted text and formulas much easier.
• ScreenSaver CE: APD powered screensaver animations: TIny_Hacker, RoccoLox Programs, and Merthsoft have been collaborating during 2025 on a set of screensavers for the TI-84 Plus CE. Unlike most "screensavers" for graphing calculators, which are manually run by the user and are functionally more animations than screensavers, these actually trigger when the calculator's auto powerdown (APD) triggers, after a period of inactivity. Among the available screensavers are the classic Flying Toasters, Pipes, Fish, Random Walk, Tiles, Spirograph. The authors have been actively adding more screensavers and fielding suggestions from the community, so be sure to check out this impressive project and add questions or suggestions of your own.
  
• Train Simulator Controller: KermMartian completed a prototype of the center panel of his long-running train simulator, integrating the many CAN bus-connected components he built over the past two years into a hardboard dashboard section. Earlier in the month, he showed off a functioning scratchbuilt replica of a TPWS panel, a safety system from the UK train he is simulating, which he integrated into that dashboard prototype. If you're into simulators or trains, check out the topic for the latest updates!
  
• Word game for CG50: scratching_claws has built a Scrabble-like word game as a school project. Beyond normal Scrabble-esque play, it also lets you tweak the rules, save and load games, and play with up to four players simultaneously. This looks to be a comprehensive project, even including a web-based installer: you can grab it from the topic, and don't hesitate to share your feedback and encouragement!
  
• Wordscapes for the TI-84 Plus CE!: sumde2 has ported an iOS game of the same name to the TI-84 Plus CE. It's a mix of crossword puzzles and the New York Times' "Spelling Bee" game: you built words from a set of provided letters, and the words must fit together in the provided grid squares, crossword-style. Check it out in the topic, which includes a download link!
  

We have three completed projects, so get your votes in, and see you soon for the final PotM of 2025! Don't forget to get a topic posted about your projects-in-progress if you want to be in the running for Cemetech's Project of the Year 2025.

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