Hello friends, I hope you all are doing great. Today, I am going to share the new MH-Z19B CO2 Sensor Library for Proteus V1.0 . The MH-Z19B is the small gold-plated NDIR (infrared) carbon dioxide sensor that sits in many indoor air-quality monitors, ventilation controllers and school CO2 traffic lights. It measures real CO2, not just "bad air", and it talks to an Arduino over a UART and a PWM pin. Behind the part sits our own model , written from Winsen's user's manual and checked against the MH-Z19 Arduino library, the one most makers use with this sensor - so the library's own commands get the answers they expect. The sensor preheats , follows a change of the air with its response time , holds its zero point at 400 ppm , corrects itself with ABC , and can be calibrated right or wrong, ju ...