def mix2(servo1, servo2, mixtype=1, gain=0.5):
    '''de-mix a mixed servo output'''
    (v1,v2) = mixer(servo1, servo2, mixtype=mixtype, gain=gain)
    return v2
def mix2 ( servo1 , servo2 , mixtype = 1 , gain = 0.5 ) : ( v1 , v2 ) = mixer ( servo1 , servo2 , mixtype = mixtype , gain = gain ) return v2
de-mix a mixed servo output