I'm using arduino uno with e-health sensor platform and ECG sensor.
But Im getting the voltage in state of waveform..
Please HELP!!!!!!!!!!!!!!!
#include < eHealth.h >
// The setup routine runs once when you press reset:
void setup() {
Serial.begin(115200);
}
// The loop routine runs over and over again forever:
void loop() {
float ECG = eHealth.getECG();
Serial.print("ECG value : ");
Serial.print(ECG, 2);
Serial.print(" V");
Serial.println("");
delay(1000); // wait for a second
}
What is the problem, is it supposed to do something else?
Is this the documentation for your ehealth thingo: http://www.cooking-hacks.com/documentation/tutorials/ehealth-biometric-sensor-platform-arduino-raspberry-pi-medical
We need more information, like what is it, whats connected to it, what you expect. From your picture it looks like its working???
Yes. It's working. But i want it to be in waveform instead of voltage.
963852741:
But i want it to be in waveform instead of voltage.
Please explain what you mean, in particular being careful to define terms like 'it' and 'waveform'.
The image of the waveform that you show in the last post is a graph made of voltages. I think that it was done in MATLAB. What you need to do to pass from voltage to waveform is, like I said before, is to do a graph. You can use MATLAB or even Excel. You need to copy the values to a text (plain text) document and save it in your pc, then open the document with Excel and insert a graph of X,Y values. For this is better change your loop() function:
void loop() {
float ECG = eHealth.getECG();
Serial.println(ECG, 2);
delay(50); // wait 50miliseconds
}
to have mush more values and to remove the information that you don't want for the graph.
If you want the graph in "real-time" you need a application in the PC side, that pick the data form the serial and draw that graph.
Matlab is good, and if you want live data, excel can access the serial port through VB script.
There is an interesting option I saw on GitHub the other day too; It can get the graph happening in Arduino. https://github.com/arduino/Arduino/pull/2177
If you cannot work out github, or how to build the compiler, you could leave a message for the author and see if you could get a working copy. It would be a nice feature to have in the IDE, but will probably need the backing of a few testers ( why I mentioned it ).
The problem with the examples of eHealth is there is a mistake in Serial.begin(115200); you must write Serial.begin(9600); and you have to use low delays for the ECG sensor (i used a delay of 100 ms and it solved my problem)
The problem with the examples of eHealth is there is a mistake in Serial.begin(115200); you must write Serial.begin(9600);
Why? There should be nothing wrong with a baud rate of 115200. Perhaps you are unaware that you can change the baud rate on the serial monitor itself to 115200, because the default is 9600.
Or is it just a bug with Matlab to where it only works at 9600 baud?