Hacking a $6000 Cotton Candy Machine to Fully Control It

Hackaday covers a hardware hacker's journey after purchasing a used industrial cotton candy machine for three hundred dollars—a machine with an original retail price of six thousand dollars. The obstacle: the manufacturer had locked him out of the software, controlling all settings remotely and refusing to transfer access to the new owner. The machine runs Android and custom control boards for motors and temperature sensors. He used remote debugging to access the system's terminal and database, but that alone didn't unlock the controls. His workaround was unconventional—he rewrote the Android app, which happened to be in Chinese, enlisting free large-language-model chatbots to bridge the language and coding gap. The result is a custom settings interface that gives him full pricing and operational control without manufacturer approval. As a final touch, he sealed the machine against ants and deployed it to a private arcade, where patrons can now enjoy cotton candy at whatever price he decides—or free.

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