Sensor ECG And AD8232

[pinthask_1]

Hello, I'm working on a project related to ECG (electrocardiogram) measurements, but I'm facing an issue that I can't resolve. I would like to ask for your advice since the deadline for this project is approaching. I am using the DOIT ESP-32 Development Board (ESP-WROOM-32) Wifi+Bluetooth ESP32 ESP-32S along with the AD8232. I am attaching the code I’ve written and the resulting graph. Thank you for your kindness in pointing out any mistakes.

Code

const int ecgPin = 36;

const int thresholdLow = 300;
const int thresholdHigh = 700;

// กำหนดขอบเขตค่าของกราฟ
const int graphMin = -200;
const int graphMax = 200;

void setup() {
Serial.begin(115200);
Serial.println("เริ่มต้นการวัด ECG...");
}

void loop() {
int ecgValue = analogRead(ecgPin);
int scaledValue = 0;

if (ecgValue > thresholdLow && ecgValue < thresholdHigh) {

scaledValue = map(ecgValue, thresholdLow, thresholdHigh, graphMin, graphMax);

} else {

scaledValue = 0;

}

Serial.println(scaledValue);

delay(10);
}

picture

[xfpd]

@pinthask_1

any mistakes

Format your code.

[jim-p]

Try this

const int ecgPin = 36;
//const int ecgPin = A0;

void setup() 
{
  Serial.begin(115200);
 
}

void loop() 
{
  int x = analogRead(ecgPin);
   Serial.print("ECG:");
   Serial.println (x);
   delayMicroseconds(500);
}