Scan for the herkulex servos connected

	This function will scan for all the herkulex servos connected
	to the bus.

	Args:
	    none
	Returns:
	    list: a list of tuples of the form [(id, model)]

def scan_servos():

    """Scan for the herkulex servos connected

	This function will scan for all the herkulex servos connected
	to the bus.

	Args:
	    none
	Returns:
	    list: a list of tuples of the form [(id, model)]
	"""
    servos = []
    for servo_id in range(0x00, 0xFE):
        model = get_model(servo_id)
        if model:
            servos += [(servo_id, model)]
    return servos