Arduino to Matlab Real time plotting

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hi, im an engineering student and also new to MATLAB. Actually im having problem to plot the data from arduino in real time. For testing purpose im using arduino AnalogSerialInOut coding.
Analog input, analog output, serial output
Reads an analog input pin, maps the result to a range from 0 to 255
and uses the result to set the pulsewidth modulation (PWM) of an output pin.
Also prints the results to the serial monitor.
The circuit:
* potentiometer connected to analog pin 0.
Center pin of the potentiometer goes to the analog pin.
side pins of the potentiometer go to +5V and ground
* LED connected from digital pin 9 to ground
created 29 Dec. 2008
Modified 4 Sep 2010
by Tom Igoe
This example code is in the public domain.
// These constants won't change. They're used to give names
// to the pins used:
const int analogInPin = A0; // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to
int sensorValue = 0; // value read from the pot
int outputValue = 0; // value output to the PWM (analog out)
void setup() {
// initialize serial communications at 9600 bps:
void loop() {
// read the analog in value:
sensorValue = analogRead(analogInPin);
// map it to the range of the analog out:
outputValue = map(sensorValue, 0, 1023, 0, 255);
// change the analog out value:
analogWrite(analogOutPin, outputValue);
// print the results to the serial monitor:
Serial.print("sensor = " );
Serial.print("\t output = ");
// wait 10 milliseconds before the next loop
// for the analog-to-digital converter to settle
// after the last reading:
Anyone please can help me?
  1 Comment
Kaustubha Govind
Kaustubha Govind on 11 Jul 2011
It's not clear how this question relates to MATLAB. From your code, it appears that you are simply writing to Arduino ports.

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Accepted Answer

Mogen Indran
Mogen Indran on 11 Jul 2011
Yea its a sample coding from arduino but i need to replace the potentiometer with the microphone. so 1st i want to test the variables from the potentiometer in the real time graph. so anyone can help me with the simple coding
Walter Roberson
Walter Roberson on 23 Jul 2011
Please clarify that question. What do you mean by reading from cputime ?

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More Answers (1)

Chirag Gupta
Chirag Gupta on 11 Jul 2011
The code above looks like an arduino sketch. Whats you MATLAB code to interface with it?
Have you looked at Arduino Package.
Also look at the associated webinar files


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