Breathalyzer
Aryaman Jhunjhunwala, Ricky Liu, Susanna Weber
Our project is a portable breathalyzer. It implements an LCD screen, as well as a buzzer for feedback. Two LiPo batteries power an ESP32 that reads the breathalyzer sensor and outputs BAC on the LCD, triggering the buzzer if the level is high enough.
The layout in KiCAD.
The actual PCB.
We chose the wrong regulator for the sensor and had to bodge in a new one.