He wanted to do a little more with the equipment so he ditched the watch and built an Arduino-based heart rate monitor. He’s still using the chest strap and was happy to find that SparkFun sells ...

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 ...

Here's a good one, showing you how to build a heart rate monitor using a Genuino 101 with Bluetooth comms. The project takes advantage of the Bluetooth Smart comms (aka Bluetooth Low-energy) built ...

If you would prefer to build your very own DIY heart rate ... on how to create a simple wearable heart rate monitor using an Arduino Nano R3. The tiny Arduino development board has been combined ...