Firmata test. Liste des ports vides

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salut à tous,

je suis en train de tester le firmata, pour developper en python.

j'ai suivi ces tutos, ici, ici, et là

dans le second tutos, j'arrive bien à faire allumer/eteindre les leds. par contre, avec le premier, lorsque je lance le firmata-test (linux 64 bits), j'ai bien la fenêtre, mais la liste des ports est vide, et rien ne s'affiche, juste les fenetres vide :(.

j'ai bien mis à jour les bibliothèques, etc, etc.

une idée ?
merci
fabrice

et avec code, cela fonctionne aussi pourtant :
code: [select]

>>> import pyfirmata
>>> pin= 13
>>> port = '/dev/ttyacm0'
>>> board = pyfirmata.arduino(port)


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