Students build respirAI, a low-cost talking stethoscope that screens lung sounds on a phone

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At UniHack 2026, a student team created respirAI, a cheap digital stethoscope that walks users through recording their own lung sounds. A neural network running on the phone then indicates whether the sounds appear normal or merit a doctor's review. The team stresses that the tool is a student-built screening aid, not a regulated medical device. The device uses a standard stethoscope chest piece, a microphone, and an ESP32-S3 board streaming audio over Bluetooth Low Energy, while the model was trained on the ICBHI 2017 respiratory sound database. The team also added a voice guide so users with their hands occupied can complete the recording process.

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