Arduino Based ECG Display Using Pulse Sensor

Arduino Nano Based ECG Display Using Pulse Sensor

Circuit Diagram :-

Pulse Sensor 

Oled Display

Code :-

//Prateek //www.prateeks.in #include <Adafruit_SSD1306.h> #define OLED_Address 0x3C Adafruit_SSD1306 oled(128, 64); int a=0; int lasta=0; int lastb=0; int LastTime=0; int ThisTime; bool BPMTiming=false; bool BeatComplete=false; int BPM=0; #define UpperThreshold 560 #define LowerThreshold 530 void setup() { oled.begin(SSD1306_SWITCHCAPVCC, OLED_Address); oled.clearDisplay(); oled.setTextSize(2); } void loop() { if(a>127) { oled.clearDisplay(); a=0; lasta=a; } ThisTime=millis(); int value=analogRead(0); oled.setTextColor(WHITE); int b=60-(value/16); oled.writeLine(lasta,lastb,a,b,WHITE); lastb=b; lasta=a; if(value>UpperThreshold) { if(BeatComplete) { BPM=ThisTime-LastTime; BPM=int(60/(float(BPM)/1000)); BPMTiming=false; BeatComplete=false; tone(8,1000,250); } if(BPMTiming==false) { LastTime=millis(); BPMTiming=true; } } if((value<LowerThreshold)&(BPMTiming)) BeatComplete=true; oled.writeFillRect(0,50,128,16,BLACK); oled.setCursor(0,50); oled.print("BPM:"); oled.print(BPM); oled.display(); a++; }

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