It took us a minute to get our July 2026 Projects of the Month out, but there were a whopping 35 projects our talented hobbyists and hackers worked on in midsummer. Check out calculator (and computer) games, utilities, ports, emulators, and simulators: www.cemetech.net/news.php?id=...

RIP to the ez80, long live z80 and ez80-based devices. I ardently hope for some [e]z80 OSH IP in the future.

Cemetech@cemetech.net · 3w ago

With the z80 having been retired only a few years ago, it's with heavy hearts that we share the retirement of its successor, the ez80: hackaday.com/2026/10/11/l...

I was pleasantly surprised to discover "the Hollywood Carney's, a hot dog stand in a different converted railroad dining car" right by my hotel in LA, and the food was delicious to boot. #trains (TBBT got something right!)

I managed to catch one of the few units that's been painted into the new Great British Railways livery on a recent UK trip, here at London Fenchurch and Upminster. #gbr #uktrains #trains

Join @kermmartian.z80.me’s team if you enjoy procedural modeling!

Christopher Mitchell@kermmartian.z80.me · 5mo ago

‪I'm looking to add more Procedural Developers/Tech Artists to my team. Are you a Houdini wiz with experience creating environments? Do you love acronyms ending in OPs? Please also point others my way! Staff: jobs.smartrecruiters.com/NBCUniversal..., Senior: jobs.smartrecruiters.com/NBCUniversal....

If your modern C++ is solid this is in @kermmartian.z80.me’s org: jobs.smartrecruiters.com/NBCUniversal...

Senior Systems Engineer (C++/Python)

Company Description: NBCUniversal is one of the world's leading media and entertainment companies. We create world-class content, which we distribute across our portfolio of film, television, and stre...

jobs.smartrecruiters.com

‪I'm looking to add more Procedural Developers/Tech Artists to my team. Are you a Houdini wiz with experience creating environments? Do you love acronyms ending in OPs? Please also point others my way! Staff: jobs.smartrecruiters.com/NBCUniversal..., Senior: jobs.smartrecruiters.com/NBCUniversal....

Staff Game Specialist

Company Description: NBCUniversal is one of the world's leading media and entertainment companies. We create world-class content, which we distribute across our portfolio of film, television, and stre...

jobs.smartrecruiters.com

I spent a three-day train ride across the country adding support for @ticalculators.bsky.social's newest graphing calculator to Cemetech's web-based IDE, SourceCoder 3. View, edit, and export TI-BASIC programs (and other files) for the TI-84 Evo in your browser. www.cemetech.net/news/2026/5/...

Coming soon: TI-84 Evo support in SourceCoder 3, so you can created and edit Evo programs, variables, and images right on your computer.

The TI-84 Evo is here. An ARM Cortex-driven calculator in seven colors, running at 156MHz with double the storage of the TI-84 Plus CE, it appears to have a significantly redesigned OS that retains keypress compatibility with 30 years of TI-83/TI-84 Plus calcs. More: www.cemetech.net/news/2026/4/...

The Youtube video has been since taken down for now, but TI-Planet admin critor grabbed it first. We're looking forward to putting TI's new TI-84 Evo through its paces at the beginning of May to see if it's truly an improvement on one of our favorite calculators. www.cemetech.net/forum/viewto...

Cemetechians have spotted more photos and marketing materials about the new TI-84 Evo calculator, reportedly coming at the end of this month: www.cemetech.net/forum/viewto...

The results for our 2025 Projects of the Year are in! Screensaver CE gets the gold medal for classic and new screensavers on your TI calculator, while a graphics library, an HP Prime Tetris game, and a flamethrower with an embedded calculator join it on the podium. www.cemetech.net/news/2026/3/...

Fifteen DIY coding/hacking projects won or tied as "Projects of the Month" on Cemetech in 2025: now it's time to choose the best of the best. Games, screensavers, utilities, and a calculator flamethrower await: www.cemetech.net/news/2026/3/...

Thanks to geekboy1011's laser engraving expertise and ablating powder coating, I now have a good way to add durable, attractive labels to my simulator panels.

Here's (almost) everything we know about the new TI-84 Evo calculator from Texas Instruments (3x faster CPU, more storage, new UI...): youtu.be/EsLICWjasoo

NEW TI Calculator Discovered: TI-84 Evo

YouTube video by KermMartian

youtu.be

And because it continues to be such an unexpected item of interest, I made a video about my process of connecting a physical GSM-R driver's control panel to @trainsimworld.com's Train Sim World: www.youtube.com/watch?v=UrSw...

Simulating GSM-R in Train Sim World 6

YouTube video by KermMartian

youtube.com

New info on the upcoming TI-84 Plus Evo graphing calculator, thanks to MateoConLechuga: USB-C, 3.5MB Flash storage, a smoother font, wider graphing, and a possible change to the TI Innovator accessories making them incompatible with the TI-84 Plus CE. Discussion: www.cemetech.net/forum/viewto...

Eleven years after the TI-84 Plus CE, the color screen version of the immortal TI-84 Plus calculator, @ticalculators.bsky.social will likely be releasing the TI-84 Evo. Leaks point to UI upgrades mirroring Casio and HP calcs, 3x faster CPU, and rearranged buttons. www.cemetech.net/news/2026/1/...

The most common question I've gotten on my train simulator lately is how I managed to connect a GSM-R Driver's Control Panel (DCP) to my simulator. Although just a glorified display and keypad (no radio whatsoever is involved), it's popular for immersive simulation. Here's how: z80.me/blog/tsc-gsmr/

Train Simulator Controller: Simulating a GSM-R Driver's Control Panel

GSM-R is the latest secure way for UK train drivers to communicate with signallers (dispatchers) and other drivers. Modern UK trains have a Driver’s Control Panel (DCP) with a display and buttons, but...

z80.me

Some of that nighttime ambience from my Class 80x train simulator finally coming together. @trainsimworld.com

In a recent video by UK train company @lner.co.uk, a guest trying one of their simulators commented, "[you] could sell these [simulators ...] imagine going to my boyfriend saying, 'Hi, darling. I've got a new train simulator. This is taking up the entire bedroom, BTW.'" And I took that personally.

Do you like flying toasters, word games, crossword puzzles, or building operating systems for 8-bit CPUs? If so, November's Projects of the Month at Cemetech have you covered: www.cemetech.net/news/2025/12...

Another day, another phalanx of CAN bus controllers for my increasingly sprawling train simulator. #trains #simulator

Arcade games galore, and more: Projects of the Month for October 2025 is here, with calculator and computer games (and beyond): www.cemetech.net/news/2025/11...

Eeeeeeeee! I was never a huge Star Trek person, but Stargate SG-1 was *my* show. I'm really excited to see that they're not only doing a new series, but that it's apparently not a reboot / reimagining but a continuation. transfer-orbit.ghost.io/amazon-starg...

Last time, I showed one of the panels (TPWS) going into my train simulator; now, prototyping the complete dashboard section of my simulated UK Class 80x containing that panel: z80.me/blog/tsc-das... #trainsimulator

Train Simulator Controller: Dashboard Prototyping, Part 3

After a cardboard prototype of the center console of my Class 80x simulator, I created a functional hardboard version and took it for a spin.

z80.me

My UK Class 80x train simulator project continues, with a painstakingly recreated TPWS panel, simulating a key safety system: z80.me/blog/tsc-tpws/

Train Simulator Controller: TPWS Control Panel

TPWS is a key safety system in UK trains, so my Class 80x cab needed a precisely replicated TPWS control panel.

z80.me

I think it's that time again.

We woke up just before September ends: our August 2025 Projects of the Month is live. Tetrises, RPGs, hardware projects, for graphing calculators and beyond: see what our creative hobbyists have been making, and vote for the best: www.cemetech.net/news/2025/9/...