uk_trafficLights.py

   1 import machine
   2 import utime
   3
   4 led_red=machine.Pin(15,machine.Pin.OUT)
   5 led_yellow=machine.Pin(14,machine.Pin.OUT)
   6 led_green=machine.Pin(13,machine.Pin.OUT)
   7
   8 while True:
   9     led_red.value(1)
  10     utime.sleep(5)
  11     led_yellow.value(1)
  12     utime.sleep(2)
  13     led_red.value(0)
  14     led_yellow.value(0)
  15     led_green.value(1)
  16     utime.sleep(5)
  17     led_green.value(0)
  18     led_yellow.value(1)
  19     utime.sleep(5)
  20     led_yellow.value(0)