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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.
TI-Trek Icon Making Contest
Published by KermMartian 3 weeks, 5 days ago (2019-11-11T14:07:38+00:00) | Discuss this article

As many of you may know, in recent times I have been taking steps to remove direct Star Trek likenesses from this project. The badge logo has been replaced, and we will be changing some of the Trek-specific system names to things more generic. This is not at the behest of anyone, we're doing it to avoid any potential copyright issues down the road.

To this end, we need to replace the Enterprise icon in the screenshot above. The shield bit will be replaced with a gfx_Circle() so you need not worry about the blue outline. As many members of TI-Trek's team have already contributed graphics, I decided to open the floor to the whims of those users who may be interested in the project and contributing in some way.


Design TWO (2) 32x32 icons of an original ship that you would like to see included in this game. The first icon should be a top-down view and the second should be a side-view. The icons may use any color within the XLIBC palette EXCEPT black, which is used as the transparent index (this means make any transparent areas of the icon black).

Submission Guidelines
  1. You may submit a design by posting a link to your submission in the attached forum topic, or emailing me at the address you can find there.
  2. Your submission must include the following, compressed into an archive:
    • Two 32x32 sprites, one a top-down view and the other a side-view
    • A text file, wherein which some form of identification (either forum name or actual name), is included
  3. The contest will close on the November 30th, 2019.
  1. The entries will be reviewed by TI-Trek's graphics team, who will act as the contest judges.
  2. Submissions will be judged based on: the originality of the design and how aesthetically-pleasing the design is.
  3. The top 3 submissions will win.
  1. A plaque recognizing your contribution to the project
  2. An in-game contributor badge (when I get that functionality working)
  3. Inclusion of your icon in the default project assets.
  4. Your sprite and (user)name in the game's in-game and written credits.

Editor's Note: Although this is not an official Cemetech contest (this project is under the sole auspices of ACagliano), we like to encourage collaboration and creativity in the community, so go to it, and have fun!

CC23 Results!
Published by Jeffitus 1 month, 2 weeks ago (2019-10-23T02:01:35+00:00) | Discuss this article

After a delay in the judging, the results of Cemetech Contest 23 are finally here!

As a reminder, these are the categories the entries were judged in:
All judging criterion are scored out of ten and then summed for a total score. We will take language restraints into consideration.

  • Originality: How novel and interesting the game idea is.
  • Style: How well the game is implemented visually.
  • Theme: How well the game fits the theme of spies/stealth.
  • Code Quality: How well the game is implemented. This is a combination of readability, speed, documentation, and optimization.
  • Enjoyability: How much we liked the game, in general.

In third place is Mystery Maze by matkeller19, coming in at 40 points. Great job!

Coming in at second we have Ace Recon by epsilon5, receiving 43 points. Well done!

Finally, the winner of CC23: Stealthy Spies with 48 points is Omicron 34 by Captain Calc. Congratulations!

Both Hunt: An RPG by Argus and Spy Tower by bdoggamer were also quite impressive and are honorable mentions for this contest.

Here are the signature banners for the contest, they should also (hopefully) soon be added as an award that shows up next to your username on the forum.





Huge thanks to KermMartian for letting me run this contest, _iPhoenix_ for a ton of help as well as judging, and slimeenergy for judging as well.

Also, thank you to everyone who participated in the contest; if you would like to know how your game did in all of the categories please PM me, I will get back to you with specific scores as well as comments from the judges.

Projects of the Month: April 2019
Published by _iPhoenix_ 2 months ago (2019-10-07T14:42:00+00:00) | Discuss this article

This month was a slower month for individual projects, with CC22 in full swing and finals ramping up. Nonetheless, a number of great projects were worked on this month! Here's the lineup for April 2019:

  • 68k Latin to English Translator: Sam's project "68k Latin to English Translator" is a Latin translation program for the Voyager 200. It works by searching its database for a translated version of the words you input to it, but it is not quite that simple. The thread contains a detailed explanation of the program and how it works, so I highly recommend checking it out!
  • Android CE: This month, Cemetech member calclover2514 worked hard on his version of "the world’s most popular mobile OS, now re-created on the TI 84 Plus CE"! The shell sports a fancy UI, customizable backgrounds, and lots of useful settings! You can find more information in the thread.
  • BOSshell: beckadamtheinventor's project "BOSshell" is a new shell for the TI-84+CE! It features a custom interpreted language called "BOS-BASIC". He's been working on a complete rewrite of the project, and we can't wait to see how it turns out! Go show beckadamtheinventor some love and support!
  • Calculatormon CE: fbdajh's project "Calculatormon CE" is a very, very cool pokemon remake. It features full sprites, engaging battle, and the thread sports a cool video! It looks like fbdajh is making lots of progress!
  • Hex grid war game in TI Basic: Loganb128's project "Hex grid war game in TI Basic" is a very fancy TI-Basic game based on a hexagonal grid. Similar to the Civilization series of games, it has combat planned and cool graphics. We can't wait for future updates!
  • Star Trek: As you can tell from the title, Star Trek is ACagliano's multiplayer star trek simulator. It has a load of really cool features, including a ton of incredible graphics! This month, he blew us away with a fancy UI and told us about a bunch of new updates he made behind-the-scenes. Check out the thread to see it for yourself!
  • LoopOver CE: From matkeller19, LoopOver CE is a 2d Rubik's cube for the CE. Written in C, it has you rotate rows of numbers to solve a 2d puzzle. This is all very cool stuff, you find a download in the thread!
  • Skyrim CE: This month, Cemetech member kg583 made a lot of progress on his "program like no other"! It has cutscenes, loads of regions, incredible graphics for a TI-BASIC game of this scale, and much, much more. So much more, in fact, we can't even put it all here. It looks interesting, so go check the thread out!
  • Superstar Hero: xlibman has been trying to complete his awesome futuristic RPG set in Quebec City. This month, he released a new update adding new music, fixing old bugs, and more! This update is super exciting, check the thread for more details!

That's all folks! Remember to take a look at the threads before voting in the poll for this month. Like always, the winner of the poll for this month will have a chance to be voted as the 2019 Project of the Year!

Cemetech Contest #23: Stealthy Spies
Published by Jeffitus 3 months ago (2019-09-02T16:22:27+00:00) | Discuss this article

Cemetech Contest #23 is all about games featuring spies and/or stealth! Participants may write a game in any language for any platform. Games must feature spies or stealth to be eligible for this contest.

Games can be in any language, for any platform. The game must feature stealth and/or spies to qualify. How this is implemented is completely up to you; be creative! You are allowed to use sprites, code, and other assets, provided they are public at the start of the contest and the game is still original. There must not be any inappropriate content, or any content that discriminates against others. This contest is open to all Cemetech users, whether you’re a contestant or a judge.

Submitting your game
Submit your entries through email (contest at this website’s domain). Submit it in the same format as you would upload the file to the Cemetech archives. In the readme file, please include a contest specific section that includes the language it’s written in and the platform it was written for. Include any optional screenshot(s) in the submission itself. You are also allowed to submit your game to the Cemetech archives, however it will not be accepted until the contest submission period is over. All entries must be in by 11:59 PM EST on the due dates outlined below. You may only submit one entry (if you want to submit an update to your entry, PM either Jeffitus or KermMartian, and re-email your submission).

Please create a thread to document your progress with the title format "CC23: ". You are allowed to receive help for this particular contest, provided that it is done publicly on either the forums, or on SAX/IRC. If you receive help from someone, make sure to give them credit!

Judging for this contest will be done by a panel of 3 judges. Two of these judges are Jeffitus and _iPhoenix_; if you would like to be the third judge, please PM Jeffitus. Participants will be judged based on criteria decided by these judges. The judges will also take into account limitations of the platform and language of the game when judging.

The contest will begin September 2nd and end on October 3rd. Assuming no delays or extensions, the judges' results will be posted on or before October 14th.

Good luck everyone!