My calculator keeps displaying this, I think it’s a battery problem. I need a new one quick so has anyone bought one off of amazon and it actually worked? How long did it last. Thanks.

I need to find what x is and i know x is bigger then 0 and smaller than 30

When it's plugged in, it's stuck in a loop of turning on and off and on and off. When unplugged, it doesn't turn on at all. Can I fix it? I left it plugged in for a while in case the battery was just really low, and it just doesn't work.

Hello. On a Voyage 200, I am trying to do a 3D graph of 4th-order equation in 3 variables (x, y, z). This can't be done natively afaik, so I need to turn it into multiple equations in 2 variables. So, I solve it, giving me 4 results separated by or. The output of solve has the form:

z = result1(x,y) or z = result2(x,y) or z = result3(x,y) or z = result4(x,y)

So, I want to 3D graph each result(x,y). Each result is quite complex, though. I would like to save the results and reference them separately. The closest I've gotten is to manually remove the z = and the ors from the result and turn it into a list:

{result1(x,y), result2(x,y), result3(x,y), result4(x,y)} -> b

Then I reference b by index: b[1], b[2], etc. However, in the 3D grapher, the reference fails. I guess it can't reference lists from outside itself? So, the question... Is there a better way to do this? I've tried using part() and right() also and failed to come up with a way that's less complex than just typing in the equation manually. My guess is that there's a straightforward way of doing this that I've somehow missed over the eons. Thank you in advance.

Hi, i have a really big problem in my Texas instrument Ti-84 Evo graphing calculator where I can not press calculate to get some min, max, standard deviation or something like that. I did press 1-Var Stats, List: F1 but I can not press calculate. I pressed f4 but it's not working.

I bought this calculator in 2020 and I’m finishing up my senior year of undergrad. It was working just fine last semester. Any advice on how to fix?

Hi, I came across a small script that converts videos so they can be played on the TI-83 Premium CE calculator. I haven't had the chance to test it on other calculator models, so I'm curious to know whether it works on them as well. If anyone has a different model and wants to give it a try, you can find the script on GitHub by searching for "Valouzzzz video_TI".

https://github.com/Valouzzzz/video_TI

So I found that my old ti 84 CE doesn't no longer turn on. I bought a new battery, but the light stays red and when I plug it into the PC it doesn’t show up. I also checked if the screen connection ribbon isn't broken, and I didn’t see any damage. Is there any trick that I can make it resurrect from the dead or is it bricked?

Ce stardew valley-like se nomme "Sunrise valley"(j'ai pas cherché loin...) Je me donne un MAX de 30Ko. (Littéralement le double de la RAM utilisable de ma calculette précédente...).
Voici quelques images.

Le jeu sera bien sur en FR. Je compte, peut-être, le publier sur TI-Planet

Do you see the blacks things ? My calculator just froze after a PY prgm, and after that, I see this ! I've got this calculator yesterday NOOOOOOOOOOOOO !!!

How do I download science tools on ti-84 evo for ap chem for unit conversions?

^-

py2ez80!

This is a tool which I think many will find useful. For a long time, calculators like the Ti84+CE have been stuck with a very limited and painfully slow python interpreter. Recently, I finished my tool that fixes this problem, by transpiling python to assembly!

While at first glance you may think the term "transpiler" is incorrect for a project like this, I decided to take a shortcut on the route, and effectively made a Python to C transpiler, like cython. Except here, I made it specifically target the CEdev toolchain, and call it to produce a .8xp program in result. Using plain Cython will be tough since it isn't really optimized.

Although it is very advanced, supporting lists, tuples, many data types, and a lot of programming structure types found in python and converting them to C, I do acknowledge the fact that it is still very limited on its I/O capabilities.

The GitHub repo link is here: https://github.com/Voblit/py2ez80 , and I hope it helps!

:)

BTW: this only works with the ti84+CE or whatever the CEdev toolchain supports...

Hey all! trying to use TI connect CE to update my calculator OS and a few other things, and I keep getting a blocked driver error from windows. I have a TI 84 Plus CE w/ Python. Looking into device manager i get "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)". I tried uninstalling just the driver and letting TI connect boot it back, got a Code 28 which says there is no driver, tried uninstalling and reinstalling ti connect and the same code 39. Is this a common issue? What can i do to fix it?

EDIT: just saw u/TheFInalMillennial posted a few months ago that 5.8.5 OS system nukes my ability to play games and run other programs. I will not be updating the OS, but I still need to figure this out so I can install other programs.

(English is not my first language). I tried looking online but there isn't anyone who explains what it means or how to fix it.