40-pin IO Development

Experiment 03 - Button-controlled LED On/Off

  1. Hardware Connection

Connect the button circuit to IO24 (dupont jumper wires can be used in place of a button), and the LED to IO23.

  1. Software Execution

Enter the user home directory and run:

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

Terminal output:

You will see IO23 output a low level when the button is pressed and a high level when the button is released (LED on/off).