towertest.py

   1 from machine import Pin
   2 import time
   3
   4 green=Pin(17,Pin.OUT)
   5 yellow=Pin(14,Pin.OUT)
   6 red=Pin(15,Pin.OUT)
   7
   8 green.off()
   9 yellow.off()
  10 red.off()
  11
  12 while True:
  13     red.off()
  14     green.on()
  15     time.sleep(10)
  16     green.off()
  17     yellow.on()
  18     time.sleep(10)
  19     yellow.off()
  20     red.on()
  21     time.sleep(10)