#---------------------------------------
#      serialWrite_blink.py
#
#   An example of sending data to the
#   serial port (-like to the Arduino)
#---------------------------------------
import serial
import time

ser = serial.Serial("/dev/ttyACM0",9600)
ser.flushInput()

while True :
    ser.write(b'0')  # - data is encoded as one byte char
    print("1")       # - gives some visual feedback
    time.sleep(1)    # - wait one second
    ser.write(b'1')
    print("0")
    time.sleep(1)