Experiment 03 - Button Control LED On/Off

  1. Hardware Connection

Connect button circuit to IO24 (can use DuPont wire instead of button), connect LED bulb to IO23

  1. Software Operation

Enter user home directory and run:

  1. cd user
  2. sudo python3 ./button_led.py

Terminal as shown:

At this point, you can see when the button is pressed, IO23 outputs low level; when released, IO23 outputs high level. (LED on/off)