Hi @David and @Alexandros, thank you so much for your help, it is really appreciated.

Alexandros : the arduino abstraction includes comport, here is the arduino object pd:
arduino.pd.zip

I have followed your advice and included the arduino object and print, but this still not working.
Also, when I click on print nothing happens.

Here is my patch:
PIR_Arduino_Puredata V2.pd
What am I missing?

Many thanks again for any help you might provide

@whale-av Thank you, sorry this is my first post in the forum.
Here is my patch.

PIR Arduino Puredata.pd.zip

Hi all,

I am new to puredata. My aim is to have my PIR (already connected with Arduino-Pduino) activating a bang in my patch.
(Please see screenshots attached)

When I click on number 2 of the board the bang is triggered, althoug my aim is to have the motion sensor activating it.
What am I missing?

Many thanks for any help you might provide