By On Saturday, a YouTube creator called “ChromaLock” published a video detailing how he modified a Texas Instruments TI-84 graphing calculator to connect to the Internet and access OpenAI’s ChatGPT, potentially enabling students to cheat on tests. The video, titled “I Made The Ultimate Cheating Device,” demonstrates a custom hardware modification that allows users of the graphing calculator to type in problems sent to ChatGPT using the keypad and receive live responses on the screen.
ChromaLock began by exploring the calculator’s link port, typically used for transferring educational programs between devices. He then designed a custom circuit board he calls “TI-32” that incorporates a tiny Wi-Fi-enabled microcontroller, the Seed Studio ESP32-C3 (which costs about $5), along with other components to interface with the calculator’s systems.
It’s worth noting that the TI-32 hack isn’t a commercial project. Replicating ChromaLock’s work would involve purchasing a TI-84 calculator, a Seed Studio ESP32-C3 microcontroller, and various electronic components, and fabricating a custom PCB based on ChromaLock’s design, which is available online.
