We used to just write notes/formulas in a text file and use a screenshot of the "MEM CLEARED" screen when they would check your calculator before the exam.
i used to archive programs, because that would make them immune to memory being wiped. you could unarchive them afterwards and still have them work perfectly fine
ti-84s are where I initially learned how to code. I asked my teacher if, "I made it can I use it for tests?", my dumbass thinking I outsmarted my class but really my teacher outsmarting me said Yes. I ran her through all of it each week before a test and I kept getting surprised she kept saying yes, I had managed to get every most variant of each formula I needed based off Prompt. Before I finally realized she was just letting me teach myself, I had managed to get a 100% for every exam thinking I had cheated it and beat math class. I really just taught myself the hard way to do everything
Most important - recognize that you taught yourself (with some help from your teacher) some highly useful skills. I am sure that you have continued to do this after high school. Good Job !
It’s not teaching yourself the hard way, it’s understanding it at a level far better than the rest of your class. You’re not just memorizing how to do it, you’re understanding the process, and what each part of the problems means. Being able to do that is a skill far more important than the knowledge you learn in those classes.
Really cool mod! Reminds me of writing programs on my TI-85 to solve physics problems in high school. I had a snitch tell on me during a test once. The teacher said "If he can write a program that solves the problem, he knows the material better than you. Leave him alone." That teacher is one of the reasons I got my engineering degree.
20+ hours of coding a Pythagorean angle solver in BASIC to "cheat" (on a calculator keyboard) did way more for my understanding than the homework and test ever could've hoped for. Eventually I had the one-liner assembly instruction to restore the memory memorized. Embedded Systems Engineer. :) Thanks teachers!
That's what I've always thought about things like not being allowed to use calculators in class. In every field that uses math (all of them), people use calculators. They may as well let us learn how to use them.
I mean they probably just have you put your phone in a box beforehand. Which would kill the hotspot, thus nullifying this method. And if the local (school) network has an auth page, you probably can't navigate that via the interface we see here.
@@NilesBlackX What if you embed a SIM card inside the calculator? Or instead, use some long range radio protocol and someone outside giving you the answers remotely? They actually use RF detectors on university entry exams here in Spain, cause there have been cases of both things I mentioned (;
@@braulioacosta6816 if you work in IT, or have experience with normal, non tech-savvy users, you'll know that that couldn't be further from the truth. This is anything but 'pretty basic' for the common man. If you will, imagine how not-smart the average person is. Now realize that _50%_ is even dumber than that. :D :D
I remember back in the 80's when I was a student having a foldable Texas Instruments scientific calculator, the teacher would check & made sure I wipe the memory but what they didn't know was that both left & right half's had secret thin slide draw panels. Printed on the panels were the operational instruction how to operate the calculator & the functions so I printed out all the formulas I needed in ultra small print then glued them into the panels, came really handy if you forgot one or need reference.
@@KeithSachs what if you got rid of the metal shield and usb port (after programming) on the seeedstudio and dremeled out all the (assumedly) useless blank parts of the pcb
Because of this video Nanyang Business School of Nanyang Technological University in Singapore banned the entire TI-84 family of calculators during exams which includes the TI-84 plus CE which is a very thin calculator and absolutely has no way of installing this mod without making some significant modifications to the calculator which would be obvious to any invigilator checking the calculators.
I remember using a Ti-86 in school and writing my own programs, from scratch, to help with my homework and tests. Some people said it was cheating, but the fact that I wrote the code myself meant that I had to know the underlying math forward and backward for the program to be accurate. I feel like my teacher understood that.
Them telling you that using a program to do math problems faster is cheating is wild. They do realize that's literally what they're doing when they use a calculator, right?
I genuinely did this same thing back in highschool in 2014. I integrated a Bluetooth chip into my calculator connected to the 2.5mm IO port which communicated with my phone (which has cellular) to send wolfram alpha API commands from the calculator and receive the results back. I recently thought about bringing it back and integrating chat gpt into the mobile app I made for the Bluetooth communication. It started with me making a line plotter that plugs into the IO port controlled by an arduino that draws graphs from the graphing screen where I reverse engineered the IO protocol of the calculator and wrote a library for arduino to communicate with the calculator. From there I designed and laser cut a little 3 axis plotter controlled by 3 servos. I did that because I was tired of drawing graphs on my math homework, it worked great haha. From there I went big with the wolfram alpha integration. I should have documented it and posted my project online. Side note I saw this video in my recommended and I havent watched it yet, I just felt I had to share my experience with a presumably similar project I did.
thats sick. i thought of doing something similar back in high school on the ti 84+ ce but never got far enough bc it lacks the IO port. it takes a lot of dedication to basically brute force your way through learning everything necessary to make such an old and essentially obsolete piece of technology such as a ti calc with an ancient chip in it to work with modern devices, so massive kudos to you
Many years ago, my schools TI-84 Plus had a firmware lock on them that didnt allow you to load games on them. I quickly realized that I could use the newer firmware on my Ti-84 Plus to do a local calculator to calculator firmware upgrade. So I simply connected my calculator to the school's TI84s and flashed new firmware, firmware that wasnt school specific, so it did not have the program blocks enabled. I was then able to transfer whatever games/programs to the calculators I wanted to, half the class had the new firmware and games installed. I enjoyed local celebrity in that class and people always wanted whatever new games I had downloaded from the internet. This was in 2008. I was the kid that always had the silver edition calculators and used birthday money to afford them, so I could have more games. The kid that did the firmware updates on his calculators at home lol
My engineering classes didn't allow calculators on tests. If you were doing it correctly, the numbers could be calculated by a third grader. If you ended up having to multiply or divide something out by hand, you knew you're completely screwed.
@@hyrize3797our tests used to specify that it was okay to truncate pi to 3 for this reason. Sure you didn't get an accurate answer but it was enough to show you knew what you were doing.
I had a TI-Nspire calculator before the color model came out, those had 2 different versions, one with CAS and one without, I had the non-cas CAS had functionalities like putting in an equation, solving it, and showing the steps it took to solve them. Thru a little binary hacking of the firmware files, you were able to load the CAS software on the non-CAS model, couple that with a custom bootloader with the option to reboot out of test mode, we had a lot of fun. props to the TI hacking community, set me up for a career of cybersecurity research.
That's like if the PS5 Pro was not, in fact, a different model, but instead DLC you had to buy online (the PS5 was always able to do it, but you had to pay extra)
@@moamber1 my library disinfects every computer after the person using it leaves. Testing centers are more than capable of taking sanitizing wipes and cleaning calculators
Exactly lol, and even if your test is too tricky you won't get time to browse through all this during limited time. In CA exams even having a formula book in front of you won't help you if you didn't "understand" the concept first.
This was perhaps 15 years ago, so I don’t remember the details, but during a statistics course (or something similar) we learned really long and cumbersome calculations that took forever to calculate by hand. I realized that this math could be done using matrices and there were awesome built-in software for doing advanced stuff with matrices in the TI-84. I could solve these problems in a couple of minutes with matrices and the built in tool while it could take like 15-20 minutes doing the math manually. Never told anyone so everyone was blown away about how fast I could do the math.
I did something similar when i was in college. We used Ti Nspire, so i swapped an Nspire 2 into an Nspire 1 body and downloaded a bunch of calculators to it + enabled internet connectivity. Glad youre bringing this to a new generation
I don't know what classes you're taking, but, if you go to college, and study math, you're going to find that often you can use your notes, you can use your book, you can use a computer (with internet), you can use any calculator, and you even have a whole ass week to do the test... it's because none of that will help you. *queue evil laugh* Your prof even stakes out math stack exchange and giggles when their questions end up there.
It's pretty insane. I've seen tests where nobody in the class made higher than 15%. You still pass since they scale the grades, and it's usually more about your logic getting to the answer than the answer itself, but it gets real dumb real quick.
@@gamagama69 God, I was never allowed a graphing calculator in high school, scientific only. I know they allowed some on the ACT and AP exams, but I just used a little Casio scientific one.
@@Guy-McPerson yes, exactly. My profs told me part of the reason for it was to see how we struggled with a problem and to let us know that this is what it is like to be a mathematician. Part of it too was to force us to collaborate with our classmates because that's how most math is done now, not by lone mathematicians but in small groups of collaborators sometimes with non-mathematicians. I hated it in the moment, but I greatly appreciated it when I got to grad school.
In Uni we were given a final closed-book test worth 70% of our grade. Not even a "Cheat Sheet" was allowed, and they expected us to remember all 30 formulas for various parts of calculus...I barely passed, and I've never needed to use any of that stuff since then.
In Ireland we pretty much solely use Casio calculators, which aren’t programmable like this, so I’d assume they might just go that way. I love watching people do shit with these calculators though, although I’m happy to not have to spend over a €100 on a calculator compared to like €15, especially since it’s recommended here that you bring a backup to your exams.
@@Docypher Some Casio calculators are programmable and usable in exams in NI. But not sure about the Republic. I have an FX-9860GII and no one has said nothing about it yet.
Back in my day, we used that 2.5mm jack to build a home-made cable to connect the calculator to a computer using a parallel port. The official cable was very expensive. This was in the 2000s before USB was widespread. I'm surprised these same calculators are still around today.
The editing and humor in this video alone is incredible, and thats on top of some really cool engineering tech. Immediately subscribing for more engineering chaos, thank UFDtech for the recommendation!
wow this is a lot more well executed than what me and a few guys I knew did with ebay-ing a second calculator and plastic stapling/rearranging the insides so it was just barely spacious enough to fit a iPod Touch 3G or if you ditched the stealthy sliding cover to save you from a quick glance, then a iPhone 4.
When I was in high school in the 90s, I had a little enterprise setup. I wrote programs for the TI series calculators that could "show the work" for math tests. I sold these programs for $5 during lunch and study hall. I never could quite figure out a DRM, so there were also resellers. It just so happens that I also worked in the principal's office for one period a day, and they could not figure out why test scores were up like 20% across the board for certain classes. Back then, teachers were NOT savvy about these calculators. It really should've been obvious because these programs weren't *that* sophisticated. They watched test taking like hawks, but never figured it out. The funniest part is, I personally never cheated. Writing the code is how I learned the material.
😭I made the same thing 3 years ago, but it used Bluetooth (easier to work with/use) to connect to my phone instead. It had a chatroom and Google (no ChatGPT back then) but no photos or games or camera. So, yours is definitely better. Problem was, there was no one to chat with, and yea, Google sucked. As for the camera, I think you could take out one of the black screws on the back and hide the camera behind there. On my calculator, the screws were behind rubber feet, so the camera would be hidden. If you have a thicker model with the recessed screws, the darkness should cover the camera. Connect the camera to your microcontroller with a ribbon cable, write a new command, and voila. If you make the command send the image to the ChatGPT API, you should be able to look at your logs to get the image back for future reference. Or just make a camera command. As for alternate designs, it just has to *look* like a Ti-84. So, strip the guts, leaving only the shell, screen, and keypad. Glue in lead weights to make it weigh the same. Option 1: Then you can add in a raspberry pi (remove the ethernet and usb and headphone jack to reduce height if using full size, or just use a zero/pico). Now you run an emulator on the rpi to get back its functionality or use a custom rom. Add capacitive touch to the dpad to use as a mouse (for smooth movement, otherwise just use it to move 100px in the direction of the click. if you pick the second option you can also use 2, 4, 6, 8 for the 4 directions), on for left click, enter for right click. Add whatever else you need (wireless cards, antenna, apps etc.) You now have a mini-pc at your fingertips. Option 2: Just stick a phone in there with a 3d printed case to hold it in position (otherwise case is too big and phone slides around). Use any sort of microcontroller to simulate the rom-clearing experience/steps. But normally just use the phone. You can have the calc screen click in and slide down exposing the phone screen through a rectangle window, then make the number pad buttons capacitive, so they tap the phone screen. Just write your own app that meets our design constraints (small rectangle window on top, an input button behind every physical button, etc.) These are obviously a lot more complex but have their own benefits. Explore if you feel like it.
Much impressed. Back in my day, I just took my TI-89 and swapped the guts directly into my TI-83 case. Kept the keyboard the same and all. Worked great all 4 years. Much simpler but less impressive.
now all we need is a few of these calculators and the server hooked up to an internet server tucked in someone’s locker, ignore the melted metal, and your good
They have a USB port which people have written libraries for so yeah you could do it. They’re a little more compact though so you might have a bit more trouble cramming an ESP32 in them.
Man, we've come a long way since I used to write and sell TI-84 programs in high school. It was crazy the amount of people who refused to listen to my instructions to archive things to avoid the standard RAM resets the exam instructors would do. Fun times.
My calculator has formulas written in permanent marker on the back and inside of the cover. They came in useful for GCSEs, A-levels, and even uni. Never been caught, and I still have this calculator. I'm still terrible at maths, but I'm far better at solving problems, so it just got me the results that showed I can do this stuff, just on my own terms instead of a predetermined way that didn't work to my strengths.
Not announcing the SSID does not make a network invisible. Beacon frames don't include the SSID but they're still sent at regular intervals, if they weren't no client could ever join the network.
We couldn't have any custom programs on our TI-84 That didn't prevent me from adding a buttload of comments at the end of our trigonometry app that contained actually all the important formulas and theories I didn't want to memorize. Worked like a charm.
I am in my Masters program right now, and what I have learned is that people will ~always~ find a way to cheat. There is nothing wrong with professors making it harder, but if you want to pay $40,000k+ (in the US, at least) for education and choose to not learn anything, that is on you, man. Plus, you're often allowed notes and the book on college exams, because they are only so useful. All that to say, this is fucking sick! Not because I have any need for it, but because it is such a cool integration of novel technologies!
In one course, we were given a final closed-book test worth 70% of our grade. Not even a "Cheat Sheet" was allowed, and they expected us to remember all 30 formulas for various parts of calculus... Idk about you, but I felt that course was rigged to make us fail (Unless you had a photographic memory)
@@ProtofallThat shit happen in my chemistry class. How the F was I supposed to remember all the chemical names, chem properties, combinations, math properties, and different tables. I hide sticky notes under my testing paper and was 1 of 2 people who passed while everyone got less than a 40 for the test. How would anyone remember 4 months worth of chem in a 2hr 70+ question test
Damn, the two comments above mine are shocking to me, we memorized 100s of formulas, 100s of procedures for problem solving across physics, maths, chem (the worst, where you're expected to remember every god damn detail from the book if you wanna get a good score) over a two year period to give a college entrance exam. So having to memorize only 4 months worth of stuff is a blessing for us in college.
Fantastic work! a tip for the mosfets though: Those aint small nor as tricky enough to pull out a microscope or a hot surface. Smudge some thick flux paste on the pads, stick misfit on it and solder with thin tip soldering iron. they aint worth active flux nor all the hassle you went through.
This guy over-engineered the hell out of his cheating device. Back in my day I would just program in the equations for the type of problems that would be on the test, and that made test taking infinitely easier and faster since all I needed to do was input the variables in the problems. It also accidentally had the side effect of making me learn the math that was going to be on the test. Win/Win in my opinion.
Did this all through high school. TI-Basic is such a pain, but nowadays they actually have a limited version of Python on the TI-84 CE and Nspire so it's even easier.
The unfortunate thing is that my college has one simple solution for this: No Programmable calculators allowed in exams. Only non-programmable calculators are to be used.
If I somehow caught you cheating this way I would give you a 100% on whatever we were doing. You did more useful things to set this up than I could teach you in any class.
Hiding my math notes in my calculator is how I started learning how to programming. After notes I wrote programs. Then after programs I learned how to hide them behind a simulated calculator, where the cursor blinked and would still answer equation inputs.
Something I discovered to late in life: It is entirely possible to solder surface mount components with a good iron, a clean tip and flux. I still can't do leadless ICs but everything else is doable.
in highschool this was an assessment for our lab lol to solder smd could solder smd as long as the pin is exposed heck i could even do 0402, im not sure if i have done 0201 but for the chips with underside pads, couldnt do without at least a hot air station
We also used the TI-84 in school, and although our cheating was not as sophisticated as this project here, _some people_ wrote their cheat sheet as a program on the TI-84, disguised it with the name of a Super Mario level, saved it so it wouldn't be deleted when the RAM is cleared, un-saved it later and edited it to read the notes. Much easier and also did get the job done if _some people_ simply couldn't remember some things. Plus: It requires much less skills and knowledge which was the reason for _some people_ to occasionally cheat in the first place.
I'm not worried about people passing, who are smart enough to _build_ a device like this. I'm worried about the students who will be able to _buy_ one from a nerd, and add _yet another line_ to the already 100 pages long list of problems they simply bypass. Homework is already a joke, now the classroom is next. A time will come when you'll prefer to sleep rough rather than under a roof constructed by Gen Alpha.
@@shadowwolf225 fr they always say hackers dont put in the work dude the hackers put way more work and brain power than the people doing it normally (not referring to academics here but u get it)
@@alekslevet the classic "Lenna" photo that was used as the standard test image for digital image processing in 1973 but is a cropped photo of Playboy model, Lenna Forsén, and the photo was banned later
Its definitely coming! Didn't mention it in this video, but the same thing that made me postpone that video was the same level shifter! Now that I know what the issue is there, I can probably finish up that project. I wont disappoint you!
people will do literally ANYTHING but the actual coursework jfc
If you are capable of this level of cheating, you will probably do fine in any job you were testing to get.
🤣
@@hiandrewfisher true
In my defense my coursework is easier than this
@@SiFireHasSpeed That is no defence beacuase you're actually doing the coursework 🤣Maybe you meant the reverse.
"Can we use a calculator in this exam?"
"Sir this is a literature class"
More like: Sir, this is a prostate exam.
i got away with it during law lmao
"Sir, this is track and field"
"I know, but I want to calculate the result on my average for the different grades I could get,"
@@ShALLaX finally i'm ready for my pro-state exam
We used to just write notes/formulas in a text file and use a screenshot of the "MEM CLEARED" screen when they would check your calculator before the exam.
Great idea, I will now be using this
they didn't even check my calculator, i was playing Mario when i finished my exam and nobody even gave a shit
I just typed in “MEMORY CLEARED” with the alpha key, not because I cheated, but I didn’t want to delete anything.
i used to archive programs, because that would make them immune to memory being wiped. you could unarchive them afterwards and still have them work perfectly fine
Others would just study.
A calculator running chatgpt getting sent back in time to an unsuspecting student 20 years ago sounds like a plot to a banger movie
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this would be a great gpt ad on so many levels 🎉
Would you like to play a woke game :)
Reminds me of the book, The homework machine
meh . fellow koreans already made it
there needs to be a kill switch to instantly go back to the normal screen
ti-84s are where I initially learned how to code. I asked my teacher if, "I made it can I use it for tests?", my dumbass thinking I outsmarted my class but really my teacher outsmarting me said Yes. I ran her through all of it each week before a test and I kept getting surprised she kept saying yes, I had managed to get every most variant of each formula I needed based off Prompt. Before I finally realized she was just letting me teach myself, I had managed to get a 100% for every exam thinking I had cheated it and beat math class. I really just taught myself the hard way to do everything
w teacher
@@game-guy-1wish I had a teacher like that 😂
@@MaxTheWraith same
Most important - recognize that you taught yourself (with some help from your teacher) some highly useful skills. I am sure that you have continued to do this after high school. Good Job !
It’s not teaching yourself the hard way, it’s understanding it at a level far better than the rest of your class. You’re not just memorizing how to do it, you’re understanding the process, and what each part of the problems means. Being able to do that is a skill far more important than the knowledge you learn in those classes.
Really cool mod! Reminds me of writing programs on my TI-85 to solve physics problems in high school. I had a snitch tell on me during a test once. The teacher said "If he can write a program that solves the problem, he knows the material better than you. Leave him alone." That teacher is one of the reasons I got my engineering degree.
20+ hours of coding a Pythagorean angle solver in BASIC to "cheat" (on a calculator keyboard) did way more for my understanding than the homework and test ever could've hoped for. Eventually I had the one-liner assembly instruction to restore the memory memorized. Embedded Systems Engineer. :) Thanks teachers!
That's what I've always thought about things like not being allowed to use calculators in class. In every field that uses math (all of them), people use calculators. They may as well let us learn how to use them.
Same here! Teacher let me keep the programs because I wrote them myself. I wasted my talent though I'm not an engineer
What a legend
@@khag.You can still code as a hobby, don't give up :)
I guess students will just have to take their math tests in a Faraday Cage now
I mean they probably just have you put your phone in a box beforehand.
Which would kill the hotspot, thus nullifying this method. And if the local (school) network has an auth page, you probably can't navigate that via the interface we see here.
@@NilesBlackX What if you embed a SIM card inside the calculator? Or instead, use some long range radio protocol and someone outside giving you the answers remotely? They actually use RF detectors on university entry exams here in Spain, cause there have been cases of both things I mentioned (;
I'm sure we'll still be able to find a way to cheat
Or the school could just get evwry student a calculator for exams
@@Ignash just mod the calculator during the exam 🤣 not that hard trust guys
If you are smart enough to make a device like this, you deserve to pass the exam
this is pretty basic ngl
@@braulioacosta6816 if you work in IT, or have experience with normal, non tech-savvy users, you'll know that that couldn't be further from the truth. This is anything but 'pretty basic' for the common man. If you will, imagine how not-smart the average person is. Now realize that _50%_ is even dumber than that. :D :D
I don't think you deserve to pass a medical exam and be trusted with people's health just because you can upgrade a calculator.
@@PouLSthis won't help you become a doctor. There is a reason that residency is mandatory to be a medical doctor.
the comment that i was looking for you nailed it man.
It's not even about cheating anymore. Homie is just pushing the limits for the sake of creation, this is insane. Mad respect.
he is doing it for the love of the game
I remember back in the 80's when I was a student having a foldable Texas Instruments scientific calculator, the teacher would check & made sure I wipe the memory but what they didn't know was that both left & right half's had secret thin slide draw panels. Printed on the panels were the operational instruction how to operate the calculator & the functions so I printed out all the formulas I needed in ultra small print then glued them into the panels, came really handy if you forgot one or need reference.
Wtf youtube where was this video 3 hours ago
😂❤
🤣
Context for future viewers: when this comment was made video was 1 hours old
You just left the sat test today didn't you
bro got a 950
Poor teachers, they don't even know what's gonna hit em
The entire education system is going to have to be rethought.
That's why they measure the weight of these common calculators.
@@asserslab that'll just slow people down, there will always be another work around.
@@asserslab i am absolutely certain you could make this modification such that the weight is identical
@@KeithSachs what if you got rid of the metal shield and usb port (after programming) on the seeedstudio and dremeled out all the (assumedly) useless blank parts of the pcb
The TI 84 isn't allowed in my class, the teacher must've seen this vid
The TI-84 does not exist. The TI-84 Plus exists.
Because of this video Nanyang Business School of Nanyang Technological University in Singapore banned the entire TI-84 family of calculators during exams which includes the TI-84 plus CE which is a very thin calculator and absolutely has no way of installing this mod without making some significant modifications to the calculator which would be obvious to any invigilator checking the calculators.
Goes to show why Singapore students are inherently smarter than American students.
:sob: its not even only the 84 that can do this, theyre morons
noooo, this was MY idea to never take action on NOOOOOOO 😭
That makes 2 of us 🤣
@Ben-z1x make that 3
Now do it with a cheap Ti-X30
@@troyt4969 bet, I will now think abt and nvr make a Ti-X30 with a WiFi chip instead Tyy🙌
four now! @@flibbityjibbity
I remember using a Ti-86 in school and writing my own programs, from scratch, to help with my homework and tests. Some people said it was cheating, but the fact that I wrote the code myself meant that I had to know the underlying math forward and backward for the program to be accurate. I feel like my teacher understood that.
Very cool!
Them telling you that using a program to do math problems faster is cheating is wild. They do realize that's literally what they're doing when they use a calculator, right?
As a math teacher, I 100% agree. If anything, writing code to do the math causes you to overlearn the material.
programmable calculators not allowed in my uni exams.
@@bable6314you literally don't know instant calculation vs unallowed formula sheet
I genuinely did this same thing back in highschool in 2014. I integrated a Bluetooth chip into my calculator connected to the 2.5mm IO port which communicated with my phone (which has cellular) to send wolfram alpha API commands from the calculator and receive the results back. I recently thought about bringing it back and integrating chat gpt into the mobile app I made for the Bluetooth communication. It started with me making a line plotter that plugs into the IO port controlled by an arduino that draws graphs from the graphing screen where I reverse engineered the IO protocol of the calculator and wrote a library for arduino to communicate with the calculator. From there I designed and laser cut a little 3 axis plotter controlled by 3 servos. I did that because I was tired of drawing graphs on my math homework, it worked great haha. From there I went big with the wolfram alpha integration. I should have documented it and posted my project online.
Side note I saw this video in my recommended and I havent watched it yet, I just felt I had to share my experience with a presumably similar project I did.
Damn you had access to some banger resources in highschool.
thats sick. i thought of doing something similar back in high school on the ti 84+ ce but never got far enough bc it lacks the IO port. it takes a lot of dedication to basically brute force your way through learning everything necessary to make such an old and essentially obsolete piece of technology such as a ti calc with an ancient chip in it to work with modern devices, so massive kudos to you
Dude you were clearly already a genius you couldn't have even needed to cheat lol
I once turned in the source code of a computer program I wrote as my "work" in Algebra I 😂
Man if I were an engineering professor and I find you doing this, you'd pass
Many years ago, my schools TI-84 Plus had a firmware lock on them that didnt allow you to load games on them. I quickly realized that I could use the newer firmware on my Ti-84 Plus to do a local calculator to calculator firmware upgrade. So I simply connected my calculator to the school's TI84s and flashed new firmware, firmware that wasnt school specific, so it did not have the program blocks enabled. I was then able to transfer whatever games/programs to the calculators I wanted to, half the class had the new firmware and games installed. I enjoyed local celebrity in that class and people always wanted whatever new games I had downloaded from the internet. This was in 2008. I was the kid that always had the silver edition calculators and used birthday money to afford them, so I could have more games. The kid that did the firmware updates on his calculators at home lol
Wow
This is so wonderfully nerdy and the presentation is top notch and funny. Stands out from the usual YT white noise. Good job!
My engineering classes didn't allow calculators on tests. If you were doing it correctly, the numbers could be
calculated by a third grader. If you ended up having to multiply or divide something out by hand, you knew you're completely screwed.
How did you calculate anything regarding circels or angels?
@hyrize3797 Leave pi as is.
@@bradwavemb inaccurat as hell
@@hyrize3797our tests used to specify that it was okay to truncate pi to 3 for this reason. Sure you didn't get an accurate answer but it was enough to show you knew what you were doing.
@@oliverer3 by hand@@oliverer3
I had a TI-Nspire calculator before the color model came out, those had 2 different versions, one with CAS and one without, I had the non-cas
CAS had functionalities like putting in an equation, solving it, and showing the steps it took to solve them.
Thru a little binary hacking of the firmware files, you were able to load the CAS software on the non-CAS model, couple that with a custom bootloader with the option to reboot out of test mode, we had a lot of fun.
props to the TI hacking community, set me up for a career of cybersecurity research.
That's like if the PS5 Pro was not, in fact, a different model, but instead DLC you had to buy online (the PS5 was always able to do it, but you had to pay extra)
Testing centers are just gonna stock their own known-good calculators bro
That’s exactly why you now have to plan a heist to replace the calculator you are gonna use with the stock one without anyone noticing
this is the way anon @@Gundam4President
Not during the pandemic, no. School doesn't need a lawsuit.
@@moamber1 What pandemic?
@@moamber1 my library disinfects every computer after the person using it leaves. Testing centers are more than capable of taking sanitizing wipes and cleaning calculators
if you can build this, you should be allowed to cheat
Ikr? This would take way more work and effort than just studying for the test.
Exactly lol, and even if your test is too tricky you won't get time to browse through all this during limited time.
In CA exams even having a formula book in front of you won't help you if you didn't "understand" the concept first.
@@martiddy Its not about the effort. Its about sending a message.
8:04 love the "The Hitchhiker's Guide to the Galaxy" refrence :D (great vid by the way)
This was perhaps 15 years ago, so I don’t remember the details, but during a statistics course (or something similar) we learned really long and cumbersome calculations that took forever to calculate by hand. I realized that this math could be done using matrices and there were awesome built-in software for doing advanced stuff with matrices in the TI-84. I could solve these problems in a couple of minutes with matrices and the built in tool while it could take like 15-20 minutes doing the math manually. Never told anyone so everyone was blown away about how fast I could do the math.
and that's why math is so awesome!
simultaneous equations?
Fucking cracked
The most amusing thing to me is how much faster that ESP32-C3 is than the eZ80 in the calculator.
honestly
Well, it's only 60x faster. On one core.
@@LuLeBe "only"
I think you just hit youtube algorithm gold.
Just found out his channel, he deserves the fame
I did something similar when i was in college. We used Ti Nspire, so i swapped an Nspire 2 into an Nspire 1 body and downloaded a bunch of calculators to it + enabled internet connectivity.
Glad youre bringing this to a new generation
I love the way he makes everything sound so simple!
TI-FI would have been a even better name
3-FITI
bane
@@57F.K aye.
TI-FI-ter
they were after his prize
Teacher: "Hey Jonas, why'd you bring your calculator to english class?"
Jonas: "Ehh... well...."
"My name is Jonas" *Power Chords*
"It's a little complicated.."
Because I process text in Unicode
replacing a sophisticated calculator with an LLM that has no idea what facts are and hence can't even do simple addition ... masterful gambit
The o1 model can do this now.
Tell me you have never used ChatGPT without telling me you have never used ChatGPT.
You... Still have access to the calculator?
hater
I think you missed the part where it can communicate with other calculators that have the same mod done. That's huge...
This video wax incredibly well thought out and it works so well! How have I never discovered this channel before? Subscribed.
The ironic thing is to make this device you’re probably smart enough to do really well on the SAT or whatever test it is!
I don't know what classes you're taking, but, if you go to college, and study math, you're going to find that often you can use your notes, you can use your book, you can use a computer (with internet), you can use any calculator, and you even have a whole ass week to do the test... it's because none of that will help you. *queue evil laugh* Your prof even stakes out math stack exchange and giggles when their questions end up there.
It's pretty insane. I've seen tests where nobody in the class made higher than 15%. You still pass since they scale the grades, and it's usually more about your logic getting to the answer than the answer itself, but it gets real dumb real quick.
hs classes im sure. obiviously math degree stuff isnt gonna be helped
@@gamagama69 God, I was never allowed a graphing calculator in high school, scientific only. I know they allowed some on the ACT and AP exams, but I just used a little Casio scientific one.
@@Guy-McPerson yes, exactly. My profs told me part of the reason for it was to see how we struggled with a problem and to let us know that this is what it is like to be a mathematician. Part of it too was to force us to collaborate with our classmates because that's how most math is done now, not by lone mathematicians but in small groups of collaborators sometimes with non-mathematicians. I hated it in the moment, but I greatly appreciated it when I got to grad school.
In Uni we were given a final closed-book test worth 70% of our grade. Not even a "Cheat Sheet" was allowed, and they expected us to remember all 30 formulas for various parts of calculus...I barely passed, and I've never needed to use any of that stuff since then.
Now make it play Bad Apple
yes bro
Yes
weeb
Maybe now testing centers will start providing these instead of expecting everyone to spend a hundred bucks on a twenty year old calculator
Haha I thought the same... but it's now 40yo calculator
@@felixyasnopolski8571 see now I thought so too, but Wikipedia says they're all mid to late nineties. Mandela effect of an I just bad at reading?
This was actually the coolest thing ive ever seen. Subscribed, notifications everything dude. Keep this up this was awesome to watch!
you’re going places man!
death of the era of TI-84. No way standardized testing places continue letting a device so extensively reverse-engineered
Oh, they won't bother banning it.
In Ireland we pretty much solely use Casio calculators, which aren’t programmable like this, so I’d assume they might just go that way. I love watching people do shit with these calculators though, although I’m happy to not have to spend over a €100 on a calculator compared to like €15, especially since it’s recommended here that you bring a backup to your exams.
Testing is already going to be different moving forward. You just dont know it yet.
@@Docypher Some Casio calculators are programmable and usable in exams in NI.
But not sure about the Republic. I have an FX-9860GII and no one has said nothing about it yet.
Thank god im done with my entire math education before shit like this forces us back into the abacus stone ages during exams lmfao.
Back in my day, we used that 2.5mm jack to build a home-made cable to connect the calculator to a computer using a parallel port. The official cable was very expensive. This was in the 2000s before USB was widespread.
I'm surprised these same calculators are still around today.
The editing and humor in this video alone is incredible, and thats on top of some really cool engineering tech. Immediately subscribing for more engineering chaos, thank UFDtech for the recommendation!
wow this is a lot more well executed than what me and a few guys I knew did with ebay-ing a second calculator and plastic stapling/rearranging the insides so it was just barely spacious enough to fit a iPod Touch 3G or if you ditched the stealthy sliding cover to save you from a quick glance, then a iPhone 4.
the "camera" option tease terrifies me.
Maybe he'll intergrate some camera into it??
I'm thinking original Gameboy camera
it's for OCR
Maybe GPT-4o multimodal functions? So it can figure out graph problems, or things of that sort?
When I was in high school in the 90s, I had a little enterprise setup. I wrote programs for the TI series calculators that could "show the work" for math tests. I sold these programs for $5 during lunch and study hall. I never could quite figure out a DRM, so there were also resellers. It just so happens that I also worked in the principal's office for one period a day, and they could not figure out why test scores were up like 20% across the board for certain classes. Back then, teachers were NOT savvy about these calculators. It really should've been obvious because these programs weren't *that* sophisticated. They watched test taking like hawks, but never figured it out. The funniest part is, I personally never cheated. Writing the code is how I learned the material.
😭I made the same thing 3 years ago, but it used Bluetooth (easier to work with/use) to connect to my phone instead. It had a chatroom and Google (no ChatGPT back then) but no photos or games or camera. So, yours is definitely better. Problem was, there was no one to chat with, and yea, Google sucked.
As for the camera, I think you could take out one of the black screws on the back and hide the camera behind there. On my calculator, the screws were behind rubber feet, so the camera would be hidden. If you have a thicker model with the recessed screws, the darkness should cover the camera. Connect the camera to your microcontroller with a ribbon cable, write a new command, and voila. If you make the command send the image to the ChatGPT API, you should be able to look at your logs to get the image back for future reference. Or just make a camera command.
As for alternate designs, it just has to *look* like a Ti-84. So, strip the guts, leaving only the shell, screen, and keypad. Glue in lead weights to make it weigh the same.
Option 1:
Then you can add in a raspberry pi (remove the ethernet and usb and headphone jack to reduce height if using full size, or just use a zero/pico). Now you run an emulator on the rpi to get back its functionality or use a custom rom. Add capacitive touch to the dpad to use as a mouse (for smooth movement, otherwise just use it to move 100px in the direction of the click. if you pick the second option you can also use 2, 4, 6, 8 for the 4 directions), on for left click, enter for right click. Add whatever else you need (wireless cards, antenna, apps etc.) You now have a mini-pc at your fingertips.
Option 2:
Just stick a phone in there with a 3d printed case to hold it in position (otherwise case is too big and phone slides around). Use any sort of microcontroller to simulate the rom-clearing experience/steps. But normally just use the phone. You can have the calc screen click in and slide down exposing the phone screen through a rectangle window, then make the number pad buttons capacitive, so they tap the phone screen. Just write your own app that meets our design constraints (small rectangle window on top, an input button behind every physical button, etc.)
These are obviously a lot more complex but have their own benefits. Explore if you feel like it.
Dude your editing style is among the funniest I've seen on UA-cam, I was cracking up at almost every joke
Much impressed. Back in my day, I just took my TI-89 and swapped the guts directly into my TI-83 case. Kept the keyboard the same and all. Worked great all 4 years. Much simpler but less impressive.
One way to memorize all those facts is to type them on this calculator. It will take so much time you will remember it.
now all we need is a few of these calculators and the server hooked up to an internet server tucked in someone’s locker, ignore the melted metal, and your good
But does this work with modern Ti-84s? Because all the new ones are faster and use a much higher resolution color screen
i hope so, but i'm pretty sure that they don't have data jacks
They have a USB port which people have written libraries for so yeah you could do it. They’re a little more compact though so you might have a bit more trouble cramming an ESP32 in them.
Amazing. Loved the editing and the short length. Subscribed
Man, we've come a long way since I used to write and sell TI-84 programs in high school. It was crazy the amount of people who refused to listen to my instructions to archive things to avoid the standard RAM resets the exam instructors would do.
Fun times.
My calculator has formulas written in permanent marker on the back and inside of the cover. They came in useful for GCSEs, A-levels, and even uni. Never been caught, and I still have this calculator. I'm still terrible at maths, but I'm far better at solving problems, so it just got me the results that showed I can do this stuff, just on my own terms instead of a predetermined way that didn't work to my strengths.
I mean, one of the most important bits of maths is just figuring out what formulas you need to use.
Testing centers now will have a list of authorized hot spot's available on the local network.
I'm not sure I understood you correctly, but you can always make a network that doesn't announce its SSID
Not announcing the SSID does not make a network invisible. Beacon frames don't include the SSID but they're still sent at regular intervals, if they weren't no client could ever join the network.
I feel like to be able to make this you’d to be able to pass the test yourself
no... trust me
@@baldiesss ?
Thanks mate, I’m passing my Cambridge Test Checkpoint
We couldn't have any custom programs on our TI-84
That didn't prevent me from adding a buttload of comments at the end of our trigonometry app that contained actually all the important formulas and theories I didn't want to memorize.
Worked like a charm.
"the jack she told you not to worry about" 💀
I am in my Masters program right now, and what I have learned is that people will ~always~ find a way to cheat. There is nothing wrong with professors making it harder, but if you want to pay $40,000k+ (in the US, at least) for education and choose to not learn anything, that is on you, man. Plus, you're often allowed notes and the book on college exams, because they are only so useful.
All that to say, this is fucking sick! Not because I have any need for it, but because it is such a cool integration of novel technologies!
In one course, we were given a final closed-book test worth 70% of our grade. Not even a "Cheat Sheet" was allowed, and they expected us to remember all 30 formulas for various parts of calculus...
Idk about you, but I felt that course was rigged to make us fail (Unless you had a photographic memory)
@@ProtofallThat shit happen in my chemistry class. How the F was I supposed to remember all the chemical names, chem properties, combinations, math properties, and different tables. I hide sticky notes under my testing paper and was 1 of 2 people who passed while everyone got less than a 40 for the test. How would anyone remember 4 months worth of chem in a 2hr 70+ question test
Damn, the two comments above mine are shocking to me, we memorized 100s of formulas, 100s of procedures for problem solving across physics, maths, chem (the worst, where you're expected to remember every god damn detail from the book if you wanna get a good score) over a two year period to give a college entrance exam. So having to memorize only 4 months worth of stuff is a blessing for us in college.
@@takeuchi5760 Ok, you win. Was your course coordinator a sadist?
@@Protofall very possible lol
add a license to your github repo!!!!!
No, this will be an "All rights reserved" forever!!! Hahaha
Fantastic work!
a tip for the mosfets though: Those aint small nor as tricky enough to pull out a microscope or a hot surface. Smudge some thick flux paste on the pads, stick misfit on it and solder with thin tip soldering iron. they aint worth active flux nor all the hassle you went through.
And you have even have the repo for the code, this is amazing man. Huge props!
4:33 hot PCBs in your area
😂😂😂
💀
I built an entire SNES into a SNES controller once - your unfolded calculator with all the bodge wires gave me flashbacks
Do you have pictures of this? As a fellow bodge wire enthusiast id love to see lol
This guy over-engineered the hell out of his cheating device. Back in my day I would just program in the equations for the type of problems that would be on the test, and that made test taking infinitely easier and faster since all I needed to do was input the variables in the problems. It also accidentally had the side effect of making me learn the math that was going to be on the test. Win/Win in my opinion.
Did this all through high school. TI-Basic is such a pain, but nowadays they actually have a limited version of Python on the TI-84 CE and Nspire so it's even easier.
I love watching videos with stuff ive never heard of but i still enjoy 😊
Love the Hitchhiker's Guide reference, totally Froody of you.
NAH IF YOU SAY SUBSCRIBE THE SUBSCRIBE BUTTON GLOWS THAT IS CRAZY. 9:10
No way! I thought you were kidding!
@ crazy, right?
1:50 it's also generally not advisable to use a russian flag to hook up boards to devices
The unfortunate thing is that my college has one simple solution for this: No Programmable calculators allowed in exams. Only non-programmable calculators are to be used.
I thought, for sure, those tattoos were just for show until he took his revenge and made a Douglas Adams reference… Respect!
If I somehow caught you cheating this way I would give you a 100% on whatever we were doing. You did more useful things to set this up than I could teach you in any class.
This is why my Calculus professor had trust issues and just allowed no calculators at all!
1:40 ice cream sandwich reference
thanks bro, my uni banned my cal cuz of this
Hiding my math notes in my calculator is how I started learning how to programming. After notes I wrote programs.
Then after programs I learned how to hide them behind a simulated calculator, where the cursor blinked and would still answer equation inputs.
Looking forward to your TI-84 powered by 500 cigarettes video. Sounds dope.
Something I discovered to late in life: It is entirely possible to solder surface mount components with a good iron, a clean tip and flux. I still can't do leadless ICs but everything else is doable.
Same with me, all I needed was a clean tip. My solder never sticked it just turned into balls and fell down.
in highschool
this was an assessment for our lab lol
to solder smd
could solder smd as long as the pin is exposed
heck i could even do 0402, im not sure if i have done 0201
but for the chips with underside pads, couldnt do without at least a hot air station
dude you are a savior i will unironically try to make it work on newer models like the plus ce thank god cheating always finds a solution
3:27 was very surprised to see cut from @Slidan video here, heh)
My man really has gone far. Hope he's safe
We also used the TI-84 in school, and although our cheating was not as sophisticated as this project here, _some people_ wrote their cheat sheet as a program on the TI-84, disguised it with the name of a Super Mario level, saved it so it wouldn't be deleted when the RAM is cleared, un-saved it later and edited it to read the notes.
Much easier and also did get the job done if _some people_ simply couldn't remember some things. Plus: It requires much less skills and knowledge which was the reason for _some people_ to occasionally cheat in the first place.
I guess I'll have to dig my ti-84 out, haven't touched it in over a decade, but man this seems like a fun setup.
Honestly I didn't understand a lot of the technical stuff, but I enjoyed your content, good luck and thank you!
1:24 i will use this for passing my exam, 'educational purposes' right?????
jk
The fact that this project probably taught you 10x more than any school ever could
true
Don't know why this was recommended by the algorithm, but I'm happy I watched! Love your style!
The fact i wanted to this so many times, always was in my head. Good job!
I'm not worried about people passing, who are smart enough to _build_ a device like this. I'm worried about the students who will be able to _buy_ one from a nerd, and add _yet another line_ to the already 100 pages long list of problems they simply bypass. Homework is already a joke, now the classroom is next. A time will come when you'll prefer to sleep rough rather than under a roof constructed by Gen Alpha.
0:39 and will produce audio
9:13 what is that background footage
is that moonyl diamondfire
We have already banned those calculators at the university for years. The exam supervisors have to walk around anyway and check attendance.
I just subscribed. This is the coolest thing I've seen in a long time! Thanks!
If I were a teacher and caught my student using such a sophisticated home-built device, I would give him an A anyway.
I've always felt like if you personally design a way to win it should be valid. That said I've never personally cheated. I like challenges.
@@shadowwolf225 fr they always say hackers dont put in the work
dude the hackers put way more work and brain power than the people doing it normally
(not referring to academics here but u get it)
8:43 - the number of people that don't know what the non-cropped source of this photo is always makes me laugh.
What is it?
@@alekslevet the classic "Lenna" photo that was used as the standard test image for digital image processing in 1973 but is a cropped photo of Playboy model, Lenna Forsén, and the photo was banned later
brilliant! am still waiting for the game boy bad apple with bated breath (unless you aren't working on that rn/anymore lol)
Its definitely coming! Didn't mention it in this video, but the same thing that made me postpone that video was the same level shifter! Now that I know what the issue is there, I can probably finish up that project. I wont disappoint you!
omg i pitched this idea to my professor last year LOL. wifi card in a calculator, laptop in another room. good stuff!
I've been waiting for this before taking my FE exam, thanks!