Pulse Sensor
Introduction
Pulse Sensor is a well-designed plug-and-play heart-rate sensor for Arduino. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart rate data into their projects. The Pulse Sensor clips onto a fingertip or earlobe and plugs right into Arduino. It also includes an open-source monitoring app that graphs your pulse in real time.
Specifications
- Operating voltage: 3.3V – 5V
- Current: 4mA
- Indicator LED
Working of Pulse Sensor
The Pulse Sensor can be connected to arduino, or plugged into a breadboard.The front of the Pulse Sensor is the pretty side with the Heart logo. This is the side that makes contact with the skin. On the front you see a small round hole, which is where the LED shines through from the back, and there is also a little square just under the LED.
The square is an ambient light sensor, exactly like the one used in cellphones, tablets, and laptops, to adjust the screen brightness in different light conditions. The LED shines light into the fingertip or earlobe, or other capillary tissue, and sensor reads the light that bounces back. The back of the sensor is where the rest of the parts are mounted.
How to interface Pulse Rate Sensor with Arduino Uno?
Hardware and Software Required
- Pulse Rate Sensor
- Arduino Uno
- Arduino IDE
- Processing software
Hardware connections
The Pulse Rate Sensor should be connected to Uno as follows:
- Signal(S) to A0
- Vcc(+) to 5V
- Gnd(-) to Gnd
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