Raspberry Pi Basics: How to Control Shutdown with a Button

1. Hardware Preparation

• Raspberry Pi
• Breadboard
• Jumper wires
• Button

2. Configuration Steps

1. Connect the hardware according to the wiring diagram

2. Enter the example folder

cd example/

Create and edit a Python file named shutdown_button.py

nano shutdown_button.py

Enter the code in the editing interface:

from gpiozero import Button
from subprocess import check_call
from signal import pause

def shutdown():
    check_call(['sudo', 'poweroff'])

shutdown_btn = Button(4, hold_time=2)
shutdown_btn.when_held = shutdown

pause()

3. After editing, press ctrl+x to exit, press y to confirm. Run the test:

sudo python3 shutdown_button.py

Long press the button for 2 seconds, and the Raspberry Pi will shut down.

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