Pulse Rate Heart Sensor
Pulse Sensor Amped is a plug-and-play heart-rate sensor for Arduino and Arduino compatibles. 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. Pulse Sensor adds amplification and noise cancellation circuitry to the hardware. It’s noticeably faster and easier to get reliable pulse readings. Pulse Sensor Amped works with either a 3V or 5V Arduino.
- S: signal, connected to any of your microcontroller’s digital pin.
- + : supply, 3V up to 5V
- – : ground
Specification:
- Diameter = 0.625″ (~16mm)
- Overall thickness = 0.125″ (~3mm)
- Working Voltage = 3V to 5V
- Working Current = ~4mA at 5V
Interfacing Heartbeat Sensor with Arduino
CODE:
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#include <LiquidCrystal.h> |
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LiquidCrystal lcd(6, 5, 3, 2, 1, 0); |
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int data=A0; |
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int start=7; |
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int count=0; |
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unsigned long temp=0; |
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byte customChar1[8] = {0b00000,0b00000,0b00011,0b00111,0b01111,0b01111,0b01111,0b01111}; |
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byte customChar2[8] = {0b00000,0b11000,0b11100,0b11110,0b11111,0b11111,0b11111,0b11111}; |
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byte customChar3[8] = {0b00000,0b00011,0b00111,0b01111,0b11111,0b11111,0b11111,0b11111}; |
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byte customChar4[8] = {0b00000,0b10000,0b11000,0b11100,0b11110,0b11110,0b11110,0b11110}; |
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byte customChar5[8] = {0b00111,0b00011,0b00001,0b00000,0b00000,0b00000,0b00000,0b00000}; |
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byte customChar6[8] = {0b11111,0b11111,0b11111,0b11111,0b01111,0b00111,0b00011,0b00001}; |
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byte customChar7[8] = {0b11111,0b11111,0b11111,0b11111,0b11110,0b11100,0b11000,0b10000}; |
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byte customChar8[8] = {0b11100,0b11000,0b10000,0b00000,0b00000,0b00000,0b00000,0b00000}; |
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void setup() |
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{ |
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lcd.begin(16, 2); |
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lcd.createChar(1, customChar1); |
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lcd.createChar(2, customChar2); |
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lcd.createChar(3, customChar3); |
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lcd.createChar(4, customChar4); |
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lcd.createChar(5, customChar5); |
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lcd.createChar(6, customChar6); |
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lcd.createChar(7, customChar7); |
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lcd.createChar(8, customChar8); |
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pinMode(data,INPUT); |
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pinMode(start,INPUT_PULLUP); |
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} |
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void loop() |
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{ |
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lcd.setCursor(0, 0); |
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lcd.print(“Place The Finger”); |
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lcd.setCursor(0, 1); |
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lcd.print(“And Press Start”); |
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while(digitalRead(start)>0); |
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lcd.clear(); |
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temp=millis(); |
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while(millis()<(temp+10000)) |
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{ |
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if(analogRead(data)<100) |
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{ |
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count=count+1; |
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lcd.setCursor(6, 0); |
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lcd.write(byte(1)); |
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lcd.setCursor(7, 0); |
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lcd.write(byte(2)); |
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lcd.setCursor(8, 0); |
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lcd.write(byte(3)); |
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lcd.setCursor(9, 0); |
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lcd.write(byte(4)); |
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lcd.setCursor(6, 1); |
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lcd.write(byte(5)); |
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lcd.setCursor(7, 1); |
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lcd.write(byte(6)); |
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lcd.setCursor(8, 1); |
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lcd.write(byte(7)); |
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lcd.setCursor(9, 1); |
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lcd.write(byte(8)); |
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while(analogRead(data)<100); |
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lcd.clear(); |
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} |
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} |
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lcd.clear(); |
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lcd.setCursor(0, 0); |
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count=count*6; |
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lcd.setCursor(2, 0); |
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lcd.write(byte(1)); |
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lcd.setCursor(3, 0); |
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lcd.write(byte(2)); |
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lcd.setCursor(4, 0); |
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lcd.write(byte(3)); |
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lcd.setCursor(5, 0); |
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lcd.write(byte(4)); |
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lcd.setCursor(2, 1); |
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lcd.write(byte(5)); |
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lcd.setCursor(3, 1); |
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lcd.write(byte(6)); |
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lcd.setCursor(4, 1); |
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lcd.write(byte(7)); |
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lcd.setCursor(5, 1); |
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lcd.write(byte(8)); |
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lcd.setCursor(7, 1); |
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lcd.print(count); |
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lcd.print(” BPM”); |
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temp=0; |
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while(1); |
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}
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Applications:
- A simple project involving Arduino UNO, 16×2 LCD and Heartbeat Sensor Module is designed here which can calculate the heart rate of a person.
- This project can be used as an inexpensive alternative to Smart Watches and other expensive Heart Rate Monitors.
Reference:
https://www.instructables.com/id/Pulse-Sensor-With-Arduino-Tutorial/
https://create.arduino.cc/projecthub/technopaths/heart-rate-monitor-using-iot-ddafca
https://create.arduino.cc/projecthub/Ingeimaks/diy-heart-rate-sensor-a96e89
https://www.electronicshub.org/heartbeat-sensor-using-arduino-heart-rate-monitor/