SOS

This is a lab intended to test your ability to control LEDs and look up documentation. In this lab, you will create a SOS script incase you are in an emergancy. The SOS script will blink …—… or short short short long long long short short short repeat.

SOS Challenge

Using either the Python interactive shell or a script, use the Gpiozero library and documentation at https://gpiozero.readthedocs.io/en/stable/api_output.html to create a SOS. When you are complete, check your anwser below. If you are impatient, you can just continue to the anwser.

SOS Anwser

1. On the Raspberry Pi command-line open a new sos.py file using the nano text editor.

nano sos.py

1. Add the following Python code.

#!/usr/bin/env python3

import time
from gpiozero import LED

led = LED(21)
while True:
        led.blink(.5,.5,3, False)
        led.blink(1,.5,3, False)
        led.blink(.5,.5,3, False)
        time.sleep(5)

1. Exit nano using Ctrl+X.
2. Make script executable.

chmod 744 sos.py

1. Execute script.

./sos.py

1. End script with Ctrl+C.

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NEXT