Unable getting ECG data from Arduino

YICHENGU · **Joined:** Mon Apr 10, 2017 9:49 am **Posts:** 2

Hi. My board is Arduino UNO along with e-Health Sensor Platform V2.0. Currently I am trying to get the ECG data from my board, but failed. The data always remain in 0.3V. Below is my code

Code:

int analogPin = 0;                              
float sensorValue = 0.0;           

void setup() {
  Serial.begin(9600);  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:
  sensorValue = analogRead(analogPin) 5 / 1023.0;
  // print out the value you read:
  Serial.println(sensorValue);
  delay(10);        // delay in between reads for stability

Is there anything wrong with my code? Or my board is broken?

Also, when using the program you plot on the tutorial, some errors occurred.

Quote:

In file included from C:\Users\guych\Documents\Arduino\libraries\eHealth_raspberrypi_v2.0/eHealth.h:36:0,

from C:\Users\guych\Desktop\ECGExampleSerial\ECGExampleSerial.ino:34:

C:\Users\guych\Documents\Arduino\libraries\arduPi/arduPi.h:27:24: fatal error: netinet/in.h: No such file or directory

#include <netinet/in.h>

^

compilation terminated.

exit status 1

It said that my computer does not have netinet/in.h. Is that because I am now using Windows 7?
Do I run it with Linux instead?

libelium-dev · **Joined:** Mon Sep 28, 2009 12:06 pm **Posts:** 11366

Hello YICHENGU,

Code:

sensorValue = analogRead(analogPin) 5 / 1023.0;

This line does not look right, try with this:

Code:

float sensorValue = (float)((analogRead(analogPin)* 5.0) / 1023.0);

Quote:

In file included from C:\Users\guych\Documents\Arduino\libraries\eHealth_raspberrypi_v2.0/eHealth.h:36:0,

from C:\Users\guych\Desktop\ECGExampleSerial\ECGExampleSerial.ino:34:

C:\Users\guych\Documents\Arduino\libraries\arduPi/arduPi.h:27:24: fatal error: netinet/in.h: No such file or directory

These errors occur because you are trying to use the codes for Raspberry Pi instead of the codes for Arduino Uno.

Regards

YICHENGU · **Joined:** Mon Apr 10, 2017 9:49 am **Posts:** 2

Sorry, still return values around 0.3V.

I use oscilloscope measuring the wave of the analog pin 0 and it returns stable value between 0.3v ~ 0.4v in frequncy domain.
I tried to measure the pin value of OPA4340 in frequency domain.
And below is the value:

Is there any possibility that the hardware is broken or the setting of my Raspberry Pi is wrong?

libelium-dev · **Joined:** Mon Sep 28, 2009 12:06 pm **Posts:** 11366

Hello YICHENGU,

are you using Arduino Uno, or Raspberry Pi? Please could you send us a photo of your hardware setup?

Regards

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Unable getting ECG data from Arduino