(Pulse Oximeter and Heart-Rate Sensor) is not included in the standard Proteus component library by default. To simulate it, you must download a third-party library, correctly place the files, and ensure the simulation model is linked. 1. Download & Installation Fix
if (error == 0) Serial.println("MAX30100 found in simulation!"); else Serial.println("MAX30100 missing. Check library.");
MAX30100.IDXMAX30100.LIBMAX30100.HEX (sometimes)