for i in range(500):
    relay1.write(True)
    time.sleep(1.2)
    relay1.write(False)
    time.sleep(1.2)
"""
for i in range(5):
    relays.write(to_array([True,]*16, 'z'))    
    time.sleep(0.2)
    relays.write(to_array([False,]*16, 'z'))    
    time.sleep(0.2)
"""