README.md

heart-sensor

This is a small Arduino project based on a simple heart rate sensor.

Build setup

• Hardware:
  • Arduino UNO (or any other)
  • Heart rate sensor
  • OLED display (optional)

Wiring

Heart rate sensor (HRS):

HRS pin	Arduino pin
+	+5V
-	GND
S	A1

OLED display (optional):

OLED pin	Arduino pin
VDD	+5V
GND	GND
SDA	A4
SCK	A5

Running

1. Download and install U8g2 library in Arduino IDE: Sketch (Alt + S) → Include Library → Manage Libraries.

2. Connect all components to Arduino according to the above instructions.

3. Connect Arduino via USB, compile and upload the sketch using Arduino IDE.

Reading data

1. Install all required Python packages with:

$ cd python-cli
$ pip install -r requirements.txt

2. Put your finger on a heart rate sensor and run the script:

python getData-cli.py

3. The dataset will be saved into this directory.

Processing data

1. Run Jupyter Notebook (or Lab) in this project directory:

$ jupyter lab

2. Open HRV analysis.ipynb file and set path variable to a dir with your dataset. You may wish to create data folder. In my case, it is data/Me/.

3. Run the cells to see the results.