Arduino VS PD
Like in the Max/MSP the Arduino to PD communication functionality comes in two parts; the Arduino Code for the board and the PD patch There are two different offerings for doing this - Simple Message System and PDuino.
Simple Message System is exactly the same as the Max/MSP version and even uses the same Arduino code. This time however you open PD then navigate to the PD patch called SimpleMessageSystem.pde . It is downloaded from here which is the same zip file as the one for Max/MSP so if you have that you don'y need to download it again, and like before you need to copy the right files in to the right PD directories as explained in the readme in the PD folder. It is important to remember to set your communications port to whaterver your serial or usb Arduino board to plugged into, on mine the usb port is ' com 3 '.
PDunio
Pdunio is another great object for Arduino into PD. it can be downloaded here >
http://pure-data.cvs.sourceforge.net/pure-data/externals/hardware/arduino/
Instructions and examples are here. You need to get the .pde from firmware folder and program it onto your Arduino board, then open the .pd patch in PD to start communication.
Note : I didn't get ver 1.1 working but i did get 1.0 and 1.2 working so if your having trouble try another version.
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