Hello all. This is my first post so try not to rip me to shreads for my lack of knowledge! Well, my basic project idea is to have an arduino read a signal into labview serially using the XBee. So far I am able to get the instantaneous values of the graph in by numerical values, but I cant seem to actually be able to GRAPH it... i have an example VI that I 'borrowed' from another source... my ground knowledge of labview is so small. My goal is to actually graph an ECG signal quickly enough so that theres a full waveform that appears for the graph. I actually started learning the basics this february. If it can be done, can anyone give me any pointers? Anything will help!

On the arduino side, this is the code. The last 'delay' determines the sampling rate. I read that ECG/EMG signal sampling needs to adhere to Nyquist sampling theory. EMG maximum frequency is around 500Hz (low pass filter before ADC is set at 500Hz cut off), therefore the sampling has to be atleast twice the maximum frequency - atleast 1000Hz. int potPin = 0; // select the input pin for the potentiometerint val = 0; // variable to store the value coming from the sensorvoid setup() { Serial.begin(9600); // opens serial port, sets data rate to 9600 bps}void loop() { val = analogRead(potPin); // read the value from the voltage divider Serial.println(val); delay(1);}

LabVIEW

Writing terminal COM data to graph using Visa

Solved!

Thanks a lot sir, actually this is just I am testing to plot serial COM port data in graph, for my project I needs to receive the data from accelerometer sensor data continously doing fft on that and then plot in graph.I have not tried to do fft but once I got sensor connected I will try.