for more information on building your very own heartbeat visualiser using an Arduino Nano microcontroller and heart rate sensor jump over to the official Instructables project page.

He’s built a finger-mounted pulse detector using a few simple components and an Arduino. This circuit uses a method known as photoplethysmography.

If you’d rather ditch the PC altogether, you might want to check out this standalone heartbeat sensor instead. Posted in Arduino Hacks Tagged arduino, heartbeat, infrared, led, medical ...

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...