User manual

Fig. 3.2: A simple traffic light.

The program ampel01.py controls the light:

import RPi.GPIO as GPIO

import time

GPIO.setmode(GPIO.BCM)

red = 0; yellow = 1; green = 2

Light=[4,18,23]

GPIO.setup(light[red], GPIO.OUT, initial=False)

GPIO.setup(light[yellow], GPIO.OUT, initial=False)

GPIO.setup(light[green], GPIO.OUT, initial=True)

print ("Strg+C exits the program")

try:

while True:

time.sleep(2)

GPIO.output(light[green],False); GPIO.output(light[yelllow],True)

time.sleep(0.6)