try here:

http://robottini.altervista.org/arduino-and-real-time-charts-in-excel

Thank you Michal.

Yes I have seen this site you refer to. But when I use a code for arduino with a potentiometer, I obtain a graph. But with my Muscle sensor v3, I obtain a graph that does not correspond at my signal. Raison why, I need a code for arduino which can be specific for EMG that I can use to plot with PLX-DAQ.

Your help is welcome.

I'll have a closer look into it a bit later.

Maybe the reaspon for your signal is described in manual of muscle sensor:

RAW EMG vs Rectified & Smoothed EMG

Our Muscle Sensors are designed to be used directly

with a microcontroller. Therefore, our sensors do

not output a RAW EMG signal but rather an

amplified, rectified, and smoothed signal that will

work well with a microcontroller’s analog‐to‐digital

converter (ADC). This difference can be illustrated by

using a simple sine wave as an example.

http://cdn.sparkfun.com/datasheets/Sensors/Biometric/Muscle%20Sensor%20v3%20Users%20Manual.pdf

I am not sure what PLX-DAQ is, but I have a student who wrote code for acquiring the v3 sensor that he acquires in LabVIEW. Would that be helpful to you?

Checked the datasheet of Muscle Sensor v3.

There it says, that it is not producing signal exactly as expecetd from EMG, but rectified and smoothened version of it. 

Hi Adam,

Can I have your site address, or site address for your students to see code that your students wrote to acquire with v3 sensor? Please help me.

Thank