Model 1 projecting a PPG on the PC Arduino Serial Plotter display.
Model 2 projecting a PPG on the PC Arduino Serial Plotter display.
Model 2 producing instantaneous BPM readings and displaying on Arduino Serial Monitor.
Model 3 LED output simulating the rhythm of my heart through its blinking.
Model 3 producing a heartbeat measurement taken over a short sampling period and scaled to a BPM.