Hardware and software requirements

Let's first see what we need for this project. As usual, we will use an Arduino Uno board.

You will also need a heart rate sensor, which is the most important component of this chapter. We used a sensor that is compatible with Arduino, simply called the pulse sensor (http://pulsesensor.com/).

The following is an image of the sensor we used:

For wireless communications, we used the nRF8001 BLE breakout board that we used in previous chapters.

Finally, you will need a breadboard and some jumper wires to make the connections between the different parts.

This is the list of all of the hardware you will need for this project, along with links to find these parts on the web:

• Arduino Uno board (https://www.adafruit.com/products/50)
• nRF8001 breakout board (https://www.adafruit.com/products/1697)
• Heart rate sensor (http://pulsesensor.myshopify.com/products/pulse-sensor-amped)
• Breadboard (https://www.adafruit.com/products/64)
• Jumper wires (https://www.adafruit.com/products...