z80 and 68k calculator development, web, offline, and mobile programming, technology discussions, ha
Cemetech combines a philanthropic mission to teach programming and electronics with a practical mission to develop hardware and software. On its philanthropic side, Cemetech aims to instill a passion for programming, embedded and DIY electronics, and engineering in its members, offering free tools, resources, and guidance. We focus on teaching programming via graphing calculators like the TI-84 Pl
04/28/2026
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. We'll go hands-on with it soon, but in the meantime, more: https://www.cemetech.net/news/2026/4/1062/_/ti-84-evo-calculator-released-fast-graphing-new-ui-new-hardware
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. https://www.cemetech.net/news/2026/3/1060/_/cemetech-projects-of-the-year-2025-results
03/01/2026
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: https://www.cemetech.net/news/2026/3/1058/_/projects-of-the-year-voting-2025
Our last Projects of the Month for 2025 includes an HP Prime turtle graphics port, a voxel MMO, a variety of TI-BASIC arcade-style games, a TI-Nspire CoD Zombies "demake", a train simulator, and much more. Vote to choose the last contender for Project of the Year:
https://www.cemetech.net/news/2026/1/1056/_/projects-of-the-month-december-2025
12/27/2025
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: https://www.cemetech.net/forum/viewtopic.php?t=20757
11/29/2025
Arcade games galore, and more: Projects of the Month for October 2025 is here, with calculator and computer games (and beyond): https://www.cemetech.net/news/2025/11/1054/_/projects-of-the-month-october-2025
11/02/2025
What do shells, roguelikes, 3D Github contribution visualization, text editors, and arcade games have in common? They're all featured in our September 2025 Projects of the Month: for graphing calculators and computers: https://www.cemetech.net/news/2025/11/1053/_/projects-of-the-month-september-2025
09/29/2025
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: https://www.cemetech.net/news/2025/9/1052/_/projects-of-the-month-august-2025
07/05/2025
Less than seven years late, Cemetech's calculator-hacking exhibits at World Maker Faire 2018 - and what the loss of the Faire in 2019 has meant for showing off DIY, making, and hacking, inside and outside the calculator community. https://www.cemetech.net/news/2025/7/1048/_/cemetech-at-world-maker-faire-2018-recap
07/01/2025
Our members were unusually busy in May, with 8 completed projects to vote on, and many others moving forward. Check out arcade and 3D calculator games, a Godot game, hardware projects, and yes, even a few math projects: https://www.cemetech.net/news/2025/7/1047/_/projects-of-the-month-may-2025