Questioning breath: a digital dive into CO2 levels

This work presents a smart mask for real-time monitoring of carbon dioxide (CO2) levels as a reference tool for diagnosis, sports training and mental health status. A printed circuit board was projected and fabricated to gain data with real-time visualization and storage on a database, enabling remote monitoring as a needed skill for telemedicine purposes. The electronics were inserted in a wearable device—shaped like a mask—and 3D-printed with biocompatible materials. The whole device was used for analyzing CO2 on a breath volunteer in three kinds of measurement.