How to get one sensor value from the arduino into processing? (

annahansen

How to get one sensor value from the arduino into processing? (

in Integration and Hardware • 5 months ago

Hi,

In the graph tutorial on the arduino website under "communications" where I interface processing with arduino, I get the data from the arduino with the below line of code:

MyPort = new Serial(this, Serial.list()[1], 9600);

If I send one sensor signal from the arduino to processing, how do I extract that one sensor value and make it a variable that I can put into an if statement?

Thanks,

Ana

Replies(2)

spiralbra..

Re: How to get one sensor value from the arduino into processing? (

5 months ago

Hi,

MyPort = new Serial(this, Serial.list()[1], 9600); is for initializing the serial port.

In the tutorial 'inByte' is the variable that holds the sensor value.

you can use substrings to pass many different values, Let us say you pass a string to your processing application : XA203 and store it in temp_buffer

the code below will assign a variable x the value 203, you can add as many variables as you want by just changing the identifier. This is what I use, and is more like in c. Hope this helps.

if(temp_buffer.charAt(0) == 'X' && temp_buffer.charAt(1) == 'A')
{
x = int(temp_buffer.substring(2));
}

annahansen

Re: How to get one sensor value from the arduino into processing? (

5 months ago

Ah, this is how it works. Thanks for the extra explanation and for adding advice how to send multiple sensor data at the same time :-)

Ana

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