Node('bridge.psi.ch',
     'ac resistance bridge',
     'tcp://5000',
     )

Mod('io',
    'frappy_psi.bridge.BridgeIO',
    'communication to sim900',
    uri='serial:///dev/cu.usbserial-14440',
    )

Mod('Resistance_1',
    'frappy_psi.bridge.SIM921',
    'module communication',
    io='io',
    port=1,
    # channel='A'
    )

Mod('Resistance_2',
    'frappy_psi.bridge.SIM921',
    'module communication',
    io='io',
    port=3,
    )

Mod('Resistance_3',
    'frappy_psi.bridge.SIM921',
    'module communication',
    io='io',
    port=5,
    )