User manual

2.4 Switching the LED on or off

Connect a LED via a 220-ohm series resistor (red-red-brown) to the GPIO port 25 (Pin 22), and not anymore

directly to the + 3.3 V connector, and connect the negative terminal of the LED via the ground rail on the

breadboard to the ground wire of the Raspberry Pi (Pin 6), as shown in the next image.

Components required:

1x breadboard

1x LED red

1x 220-ohm series resistor

2x connecting wire

The next program led.py turns the LED on for 5 seconds and then off:

import RPi.GPIO as GPIO

import time

GPIO.setmode(GPIO.BCM)

GPIO.setup(25, GPIO.OUT)

GPIO.output(25, 1)

time.sleep(5)

GPIO.output(25, 0)

GPIO.cleanup()