Internally his heart rate monitor is using an Arduino Pro Mini, a small OLED screen, and a turn-key pulse sensor which was originally conceived as a Kickstarter in 2011 by “World Famous ...

You may be interested in a project published to the Hackster.io website earlier this year providing instructions on how to create a simple wearable heart rate monitor using an Arduino Nano R3.

I was recently provided a copy of Environmental Monitoring with Arduino to review and it doesn’t disappoint in keeping the idea train running. Environmental Monitoring with Arduino: Building ...

When both Powerbeats Pro 2 earbuds are placed in the ears, and heart rate monitoring is active, Apple says LED optical sensors pulse at over 100 times per second to measure heart rate via blood flow.