Integrated pulse oximetry and heart-rate sensor module with red/IR LEDs and photodetector. Breakout boards expose an I²C interface for easy integration with microcontrollers and wearable prototypes.
Measures heart-rate and SpO₂ (optical)
I²C interface on common breakouts
Suitable for prototypes and hobbyist health projects (not medical-grade)
Requires filtering/calibration for accurate results
