- What's your age? by Jeff calc 84
- Test: How long does it take to graph this function by the CE guy
- Raycaster in AXE for TI84+ by Jeff calc 84
- Is it possible to override prededefined units & constants on AMS (TI-89T)? by twisted_nematic57
Despite the delay, January’s PotM is finally here! Our members started off the new year strong, with close to 20 projects being featured in this post. Since we’ll be recapping the progress on the project during January, be sure to check out their forum threads to see what else has been happening since.
- All languages for the TI 84 + CE: calcgeek is working on a project which aims to provide language fonts/translation for a number of different languages. Right now they’ve been working on Hebrew, and their translation program supports 500+ different common words.
- CE Patch Manager: extend your CEs archive up to 12MB!: Qnex created a utility for patching the TI-OS to support larger flash memory chips, giving people who have replaced or upgraded their calculator’s flash chip in the past a way to take advantage of the extra space.
- Creating a custom AP and protocol for the TI-Nspire Navigator System: With this project, QuestBoy38 hopes to use the TI-Nspire CX Navigator system to communicate with another device, such as a Raspberry Pi. They hope to then use the Raspberry Pi for heavier tasks which the CX may be unable to handle, and then send information from those programs back to the calculator.
- FamiCalc - an NES emulator for the TI-84 Plus CE: Zaalane published a new pre-release of their NES emulator, adding MMC3 support and a full APU implementation, among other bugfixes and smaller changes. They invite you to test your favorite NES games with this new pre-release and let them know of any bugs or feedback you may have!
- HD Picture Viewer [C] [TI-84 Plus CE]: TheLastMillennial spent January working on adding GIF support to their HD Picture Viewer program. In an attempt to increase the framerate for larger GIFs, they’ve also been working on their own graphics routines. Finally, they also re-wrote their converter program to use Avalonia, allowing the program to run on macOS and Linux as well as Windows.
- lwIP Library with CDC-Ethernet for the TI-84+ CE: ACagliano created a configuration wizard for the lwIP app, with the intent that users will be able to configure global parameters of the library. Once the app is available as a dynamic library, these settings will be able to affect any other program that calls into the app.
- Making a python transpiler #3 (and preceding thread): Voblit has been working on a program to compile TI-84+ CE Python programs to eZ80 assembly. This month, they finished the tokenizer component of their project.
- "PAMS" Interpreter: Fard shared an interpreter written in Fortran for their simple programming language, PAMS. PAMS features four operations: Print, Add, Minus, and Syntax. If you’re a fan of programming languages, you may enjoy writing your own PAMS interpreter, as Cemetech users shared in the thread.
- PortCE (Compile ti84ce games for Windows/Linux): ZERICO2005 released the second version of their PortCE program this month. This new version supports the fontlibc library, along with zx0 and zx7 decompression, emulation improvements, and bug fixes.
- Reviving the WAP: Privacy_Dragon created a WAP page to show users current disruptions on Dutch railways, along with sharing an update on the status of other WAP pages, including a new search engine for WAP pages: W@PFind. If you’re a fan of older phones, be sure to check it out!
- 1980s-era Rogue port: dsteffen has been working on porting the original 1980s rougelike Rogue to the TI-84+ CE, with a stripped down curses implementation they’ve written. For any fans of Rogue (or NetHack), this is definitely a program to check out!
- ScreenSaver CE: APD powered screensaver animations: merthsoft, RoccoLox Programs, and TIny_Hacker released an update to their screensaver program. The update includes a new animation with colors that fade in and out, along with a preview feature to test out screensavers in the settings app.
- Taxi game: calcgeek started work on a taxi game for the TI-84+ CE, using Hybrid BASIC. They’ve taken advantage of a custom font to draw road tiles. Go show them your support!
- Text Sprite Generator: mr womp womp returned to their TI-84+ text sprite generator after ten years with a number of optimizations. Additionally, the program now displays “WORKING…” while creating a sprite, and allows both [2nd] and [enter] to be used in the main menu.
- TICEVID - A USB Video Player: ThePinkHacker worked on implementing async video playback this month. They plan to support caption and chapter data in the future as well.
- TinyTurtle: A lightweight Turtle Graphics module for HP Prime: komame published three updates for their Turtle Graphics module in January, adding examples, fixing bugs, and making some useful optimizations. They also added a simplified Screen class, a number of methods, and some safeguards to prevent unintended behavior. For a more detailed recap, be sure to check out the topic!
- Trackinator: merthsoft made a Discord bot to handle assigning the “Active” role to members of Cemetech’s discord server. The bot provides some moderation features as well, with the intent of removing dependance on the “Arcane” bot currently in use.
- Train Simulator Controller: KermMartian built a custom table to support their train simulator controller, which attaches modularly to their desk so it can be removed or adjusted when needed. They’ve also been working on reverse-engineering a GSM-R Driver’s Control Panel, with the intent of incorporating it into the controller to provide control inputs as well as displaying text and info routed from Train Sim World 6. Take a look at the topic for more pictures and some videos of the simulator in action!
- WebTILP: a web version of TILP - now available in v1 (beta): Initially a performance test for the Codex CLI, Adriweb published WebTILP, a web version of the TiLP linking program which makes use of WebUSB. The web app supports any WebUSB-compatible browser, meaning even mobile devices can now benefit from a convenient way to transfer files, take screenshots, and view device info for your calculator.
- Worms68k Party for TI-89: orokro revisited their TI-89 Worms clone after almost a decade, making use of Gemini to detect a bug which had stumped them in 2017. With this newfound motivation, they’ve added more features and are hoping to release the game soon after polishing up the game a bit and fixing some bugs. Check out the topic for an awesome trailer video they’ve created for the game!
As always, be sure to vote in the poll on your favorite completed project this month!
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It’s that time again (and about time) for voting on the Cemetech Projects of the Year™ for 2025! With 15 different projects, the lineup has gotten quite large, and there are plenty of worthy options to choose from.
- January: [84+CE] Fish CE by merthsoft and midiCE: TI-84+ CE as a USB MIDI keyboard by TIny_Hacker: January was a tie between merthsoft’s Fish CE, an aquarium simulator/screensaver with lots of different fish, and TIny_Hacker’s midiCE, a program that allows you to use your CE as a MIDI keyboard, using the keys as a keyboard, and the CE’s screen to display extra controls and options.
- February: A Calculator Flamethrower by TheLastMillennial and TInymon for TI83 by Targz: Another tie, this time between TheLastMilennial’s Calculator Flamethrower, which is, in fact, a real flamethrower that uses a TI-84 Plus CE to to display the barrel temperature using a Vernier probe, and Targz’s TInymon, a creature capturing game in the vein of you-know-what for both the TI-83+/84+ and TI-83.
- March: MIDI Player CE by prime17569: prime17569 has broken the barrier to audio on the TI-84 Plus CE with his USB Midi Player, which uses the speakers of a connected USB-MIDI host to play MIDI files from the CE.
- April: Astro-Calc by linkjt9: In April, linkjt9 released their 2 player space combat PvP game for the TI-84 Plus CE, Astro-Calc, which allows 2 players to duke it out on the same calculator.
- May: 16-bpp Graphics Library for the CE C Toolchain by the dynamic duo of RoccoLox Programs and TIny_Hacker: In May, TIny_Hacker and RoccoLox Programs finally released gfx16, a column-major 16 bpp C graphics library for the TI-84 Plus CE. Gfx16 offers several benefits over graphx, namely the column-major rendering to avoid screen tearing and support for a much wider range of simultaneous colors.
- June: Quickzoom: the best graph zooming utility out there for TI-89/T by twisted_nematic57: twisted_nematic57’s Quickzoom for the TI-89 offers a fantastic quality of life feature: a GUI for zooming in on graphs, removing the trial and error of getting the perfect zoom window on a graph and allowing for easy adjustments.
- July: Liquid Sort for the TI-84 Plus CE by sumde2: sumde2’s Liquid Sort for the TI-84 Plus CE is a port of the game “Liquid Sort” for IOS in C. It features 12 levels, and is very compact at 4.8 Kilobytes.
- August: AsmHook2 with OS 5.8.3 support by RoccoLox Programs and DYNATRIS - a Tetris clone for the HP Prime by komame: Yet another tie, now between RoccoLox’s updated AsmHook2, bringing easy Assembly program to TI-84 Plus CE users on OS 5.8.3, and komame’s DYNATRIS, a detailed Tetris clone for the HP Prime.
- September: BOOMTANK for the TI-84+ by BPierce: September brought forth BPierce’s BOOMTANK, a Scorched Earth type game written in TI-BASIC for the TI-83+/84+. The standout feature here is the addition of a Computer Player mode, giving you a pretty decent singleplayer experience.
- October: WALLHOPR for the TI-84+ by BPierce: BPierce returns for a second POTM win in a row with WALLHOPR, a deceptively tricky ball bouncing puzzle game for the TI-83+/84+ written in TI-BASIC where you must escape various boxes using an exact number of bounces.
- November: Wordscapes for the TI-84 Plus CE by sumde2: For November, sumde2 returns with another mobile game port to the TI-84 Plus CE, this time of Wordscapes, a crossword-adjacent puzzle game.
- December: ScreenSaver CE: APD powered screensaver animations: by merthsoft, RoccoLox Programs, and TIny_Hacker: To round out the batch of projects, we have a collaborative project: ScreenSaver, a collection of screensavers for the TI-84 Plus CE by merthsoft, RoccoLox Programs, and TIny_Hacker. There’s 16 different screensavers/animations to choose from. Unlike older “screensaver” type programs though, this one uses a hook that replaces the Auto Power Down function on the CE with your screensaver of choice, giving you the true screensaver experience!
And thus, this wraps up 2025. Don’t forget to vote for your favorite project!
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The TI-84 Evo, the latest model in the TI-8x series, has just leaked online (on its official Amazon page). TI has yet to announce anything, so this seems to be an accident. We can only now guess that they are getting ready to announce it soon.
Here's what know so far:
- It is the successor to the TI-84 Plus CE Python, and as such, we can expect all the same features software-wise (Graphing, Flash Apps, TI-Basic, Python, etc.) It is yet to be confirmed whether flash apps will be included as an indiscrete part of the OS like the TI-82AEP or if they will continue to be standalone apps.
- Like the TI-84PCE, it will have a rechargeable li-ion battery and 240x320 color TFT LCD.
- It will feature a brand-new ASIC. According to the listing, this processor is said to be "3x faster", which would imply 144 MHz equivalent... more than standard eZ80 implementations. Maybe this will be an ARM processor that both emulates the ez80 and runs the Python interpreter on a single ASIC ?
- It will likely have a USB Type-C port
- It is said to have ”50% more graphing space”, which certainly means they removed the arbitrary border around the graphing area.
- It will feature an Icon-based home screen
The key layout seems to have changed in a few significant ways, which provide clues about calculator functionality:
- Firstly the ON key now features a home icon to go back to the home screen, which is no longer the “calculator” app.
- The X^^-1 key and ^ keys have been merged into a single X^n key, making way for the new <> key. The TI-83 Premium CE has always had this key, which is used to switch between exact and approx answers. This seems to suggest that the Evo could have an exact math engine like the TI-83 Premium CE.
- The APPS key has been replaced with a MathPrint fraction, which had previously been relegated to a 2nd function since OS 5.3.0. The home button will serve a double purpose as an APPS key. Interestingly, the MODE button has not been removed despite the home screen containing a gear icon. Perhaps these will both lead to the same menu, or there will be a new “settings” menu, distinct from the MODE menu.
It seems the TI-84 Evo will initially come in 7 color variants:
- White
- Lavender
- Raspberry Metallic
- Silver Metallic
- Teal
- Mint
- Pink
While the overall shape of the calculator appears to be the same as the TI-84 Plus CE, it lacks the iconic screen bezel, which means the case plastics have been completely redesigned. Hopefully the new design will fit seamlessly into old TI-84 Plus CE Docking Stations and the slidecases will be interchangeable.
The TI-84 Evo, like its predecessors, is approved for standardized exams, including the ACT®, SAT®, IB®, and AP® courses.
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It's time to recap what our members were working on during the last month of 2025! As always, remember to check out the project threads and vote for your favorite completed project of December!
- 8xk Disassembler: ti_kid has been working on a .8xk disassembler, focusing on apps for Z80 calculators. They've identified where execution starts and started work on the disassembler portion of the program.
- Ascend CE!: AchakTheFurry announced a sequel to their game "Jumperz!", which uses TI-BASIC and CelticCE. So far, the game features a level editor with support for a variety of different obstacles and objects for the player to interact with. Once the game engine is completed, they plan to work on the game's levels and story.
- Befunge Interpreter for the Ti83+ line of calculators: Jeff calc 84 wrote a file converter for their Befunge interpreter this month, making use of Python with the tivars_lib_py library. For those unfamiliar, Befunge is an esoteric programming language where code is laid out on a two-dimensional grid.
- BmpToConvfnt: merthsoft created a utility for quickly converting a bitmap file to an ascii font for use with convfont / FontLibC. The program has a number of useful features, including the ability to provide an input text file for mapping characters to glyphs. In the future, they may also create a web version of the utility and add output support for the .FNT file format.
- HD Picture Viewer [C] [TI-84 Plus CE]: TheLastMillennial added support for 1, 2, and 4 bit color to their picture viewer, meaning it now supports images using 1, 2, 4, 8, and 16 bit color! Additionally, they added back pan and zoom support for 16bpp images, as well as making use of convimg's dithering support for the picture converter to significantly improve the appearance of images using lower color depth.
- [TI-NSPIRE CX II] NZP - CoD Zombies Demake: naievil, along with the NZ:P team, announced a demake of Call of Duty Zombies for the TI-Nspire CX II. The game makes use of nQuake and includes a number of maps and weapons, with easter eggs as well. It's quite an impressive project, so be sure to give it a try and check out the thread for a video demo!
- Random Things: StephenM's "Random Things" topic serves as a collection of smaller projects they've published which they deemed didn't warrant a full topic. This month, they posted a TI-BASIC breakout game!
- ScreenSaver CE: APD powered screensaver animations: merthsoft, RoccoLox Programs, and TIny_Hacker released their screensaver program, with 9 new animations from merthsoft for a collection of 16 total. Additionally, the animations are now stored in separate AppVars, making it easier to add more in the future.
- TI-Planet's "Project Builder" with online CE C/C++: Adriweb added documentation for TI-BASIC functions TI-Planet's web IDE this month, which can be viewed by holding ctrl/cmd and hovering over a function with your mouse in the editor. They also added a BBCode module with a real-time preview!
- TinyTurtle: A lightweight Turtle Graphics module for HP Prime: komame has created a lightweight implementation of Python's turtle module optimized for the HP Prime. The module supports a standard mode (seen below) where drawing is performed in real time, along with a viewport mode which renders the image and then allows the user to scale and pan.
- Train Simulator Controller: KermMartian completed hardboard prototypes for the remaining four panels in their (quite impressive!) train simulator controller project. While they have yet to collect some of the remaining electronics, the project is taking shape quickly. Be sure to check out the thread for more photos!
- txttobasic - a program that converts text files to TI-BASIC: frootdaproot has written a Python program to easily convert text files to TI-BASIC programs to be read on your calculator. The script supports .epub, .txt, and .pdf file types, and will split large files across multiple programs.
- Undertale on calculator: Znak_Pares restructured the code for their TI-BASIC Undertale game, moving the maps to their own program, adding more levels, and improving the rendering system to support more solids and decorations in each level.
- World of Squares (PC MMO): VitalAsh announced their voxel MMO game, featuring cute animals, dangerous mobs, and a cube violin (among many other things)! The game is available for free, so be sure to give it a try!
That wraps up December's projects! Be sure to vote in the poll and keep an eye out for the Projects of the Year in a few weeks!
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