Mechanical SpiroMètre

Design InspirationI designed and made an electronic spirometer with my grandfather while I was in high school. For fun and to challenge my self, I tried to remake it, but using only gears and rod-cranks. PS. Sorry for broken English. Printing indicationsNozzle 0.40.15mm at 50mm/s for most parts.All the parts were printed with PLA or PLA+ except for the tourbillon which works better in PETG. It’s also important that all the parts are cleaned of stringing and printing artifacts.CaseThe ‘’whistle’’