basic tutorial how to communicatie between Arduino and Puredata with serial port

http://nf-interactive.blogspot.com/2011/02/arduino-data-to-pure-data.html

@danijel said:

Great, I'm in the process of deciding whether to use Pd or Processing for a small Arduino project - this tutorial will come in handy, thanks

I used processing also, it's as easy as PD to connect but the features are very difficult. the graphical interface from PD is very nice!

@nf-interactive said:

I used processing also, it's as easy as PD to connect but the features are very difficult. the graphical interface from PD is very nice!

Thanks for the heads-up - I'm already familiar with PD, and I hate Java, so I'm probably following the same route

Anonymous commenting is enabled on the blog i would very much care about your reactions. thanks!

Noob question here, does the data flows both way ? like can I send data to arduino via the comport object to control a led ?

I wrote a little patch that reads from serial port values sent by Arduino (the value of a photoresistor) and send back to Arduino a text to be shown on an LCD connected to it, but it seems that [comport] outlet reads also what I'm writing.

Do you know if it is possible to read only what is received by the serial port?

Thank you.

Hi killkrt:

Maybe you can tell arduino "not to listen" while you send the data. I don't know if that data would stay in a buffer waiting to be read, anyway. I do that to avoid loops when I refresh two-way controls (the ones that you may operate on both on screen and on midi controllers).

Sumidero

It seems strange to me, since normally Arduino doesn't listen what it is writing from the serial port, did it?

Is it possible that [comport] by default put on the outlet the argument of the print message?

Thank you.

killkrt, want to post you patch and sketch? Maybe you should call a while function like this: while (Serial.available > 0) {} and you put what ever you want to be done with data sent from Pd inside the curly braces...
Maybe you've already done it, just a thought I got.

pblanchette, I've attached a Pd patch that turns an LED on and off. There's a [pddplink] with the URL of the Arduino sketch and circuit needed for this.
Cheers

http://www.pdpatchrepo.info/hurleur/arduino_blink1.pd

Oh my... I was cleaning my code in order to make more readable and sent to you when I noticed that I put a "Serial.println("Data received")" for debugging!!! :-/

Ehm... Sorry!!!