How to make a Heart Rate Detector at Home - Under $10 - YouTube
UG LAND INDIA Pulsesensor Heart Rate Beat Pulse Sensor Module Amplifier for Arduino Raspberry Pi Open Source with Cable Electronic DIY Tool : Amazon.in: Industrial & Scientific
ICQUANZX Ritmo cardíaco Sensor de Pulso Sensor Pulsesensor DIY para Arduino : Amazon.es: Deportes y aire libre
DIY HeartBeat Sensor - YouTube
Heart beat pulse sensor using arduino DIY kit – Superkitz.com