connecting mac ports to Processing

Projects Interfacing w/ Software on the Computer
1

Hi,

I'm a week new to arduino and have what might seem like an extremely simple question to you all.

I am doing a tutorial where i'm transmitting information from arduino to the Processing program and all i'm trying to do is make the potentiometer adjust a background colour.

it's set up right as reported by the serial monitor and is converting the info from the potentiometer to a 0 - 255 number.

Everything in Processing seems fine as it' creates the 500x500 box i'd like to adjust. I think Processing isn't receiving the data from the serial port ultimately.

to initialize the port i've used:

port = new Serial (this, Serial.list()[5], 9600);

As i've seen in a tutorial.

this is the only Serial.list number [5] that doesn't return an error.
In the arduino software, the port the arduino is connected to is listed as:
"/dev/cu.usbmodemfa131 (Aurduino Uno)" and so, i've tried "/dev/cu.usbmodemfa131".

Neither has been successful.
I'm using a macbook pro early 2011 and running on 0S 10.7.5.

I even tried installing the FTDI serial patch. If it worked, i'm not sure what i should be changing.

Any help would be appreciate and thanks

js

1 Like
2

Does the Arduino work when it is connected to the Arduino Serial Monitor ? If so the problem lies with Processing (which I am not familiar with).

What Serial Port does the Arduino IDE use to connect to the Arduino? Presumably Processing should use the same Port.

...R

3

Thanks for responding. Yes, the signals from arduino are received by the serial monitor. I agree, it should be the same port so, I can't figure out what the problem is in Processing. I'm very new to that software too.
Is there any other software I can use to have communication btween arduino and my cpu?

again, thanks for taking the time to respond.

4

Someone will probably come along with advice about Processing ...

I use Python and this Python demo may be useful. I think it should work on a Mac if you edit it to put in the correct port reference.

I also wrote a simple Python GUI demo that allows you to select the port. I can't remember if anyone tried it on a Mac - it may be mentioned in the Thread.

...R

1 Like
5

thanks so much. I'll give it a try tonight and see.

I'll report back.