Here's how in only a few steps!
I made this particular Instructables using a sonar sensor (XL Max Sonar EZ/AE) but you can do it with any data values that are separated in arduino by a carriage return and a line break:
To put it simply, the incoming sensor data should look like this in the Arduino Serial Monitor:
Separated by a newLine.
I made it at TechShop. !
Step 1: Get CoolTerm
Download it at : http://www.macupdate.com/app/mac/31352/coolterm.
Step 2: CoolTerm and the Arduino code
Serial.println(potValue); //print the sensor value to the debugger panel
Any code for one sensor would work, for instance the attached circuit and code would work for a photocell to measure light levels.
Instead of the photocell I'm using the Max Sonar Sensor to measure proximity.
Step 3: Connecting to the Serial Port in CoolTerm
Make sure the Baud Rate is set to 9600 (because remember in Arduino, we set it to 9600 using Serial.begin(9600);
NOTE: You cannot have two Serial ports open at the same time, so you cannot view the arduino serial monitor while you are using CoolTerm.
Step 4: Start Recording & Saving
You should see data scrolling through in the serial monitor.
Begin to record the data:
Click Connection --> Capture to Text File --> Start
You can specify where to save the text file.
Step 5: Graph the Data
Your sensor data should look something like the image - a long columns of numbers.
See the images for the following:
Click on "Chart".
Then click "Line".
and click on "Line" again.
(see the images)
Step 6: And you should get something like this
Now you can work in excel to label the axes as you like.
Now you can visualize the data using coolTerm and excel!
Coming soon - how to visualize the data real time with Processing.