Hi everyone, I have very basic knowledges of PureData.
I was wondering if pd can do something like this, using pduino or similar:

http://code.google.com/p/cvairsequencer/

It´s a simple cv sequencer for analog synthesizers using flash scripts and arduino.
I have tried it and works pretty good, but the problem come with the insuficient control...no midi, only mouse...and you can´t save the works.

It would be possible to use pduino to do something similar?
I searched but without success.

Any idea where I can start?

Thank you very much!

Short answer? YES, absolutely.

Long answer may be a little more complicated. The first issue that comes to mind is the fact that the "Analog" output on the arduino is PWN, not true analog. You can smooth it with an analog filter, which is what is baing done in the project you linked to. You would also need external transistors/darlingtons to switch the 0-10v. Also, the arduino only has 6 PWM output pins. If you are working with analog, this would become a limitation rather quickly.

Check out what Pduino offers in terms of PWM control.
I like the ULN200X line of PhotoDarlington IC's for switching higher voltage/current.

Thanks nestor.
I have used one rc filter with the flash based sequencer, and it worked ok.
Not the best, but works.
The gate out comes directly from a digital pin without any filter.
I will find more info about the pwm out on pduino.

Found an interesting application note from microchip on using filters and opamps to generate analog voltages from pwm.

http://ww1.microchip.com/downloads/en/AppNotes/00538c.pdf

Hey, thanks a lot nestor!
That´s perfect for this project and I have opamps here for try it.
I was now doing tests with the ardino PWM outputs (+rc filter) and some pd sequencers.
My little knowledge of pd makes me work very slowly... but no problem, this is a good opportunity to learn something more about pd.
Greetings!

You could always use a MIDI sequencer, and then pipe the signals through PD to convert them to CV. Actually, you could do all of that just with the arduino come to think of it.

Another thing I tried was a voltage doubler directly with the soundcard line out, changing the dac (from pd) values to obtain diferent out voltages.
Something like the method used with the Silentway plugins.