Connect the sensor from

Connect FTDI to U1 and to the USB

Open Arduino IDE install the InvIoT U1 library.

Go to file/examples/InvIoT_U1/applications/pulseSensor

Upload sketch


Visit for the U1 board, library download

and for the pulse sensor


This is not for medical use! The code on the example is from and is modified for the U1 library.

What can you do?

You can use the WIFI ESP8266 that is on board of the U1, and send the pulse data over the internet to sites like