Code to blink internal led on Pico (mircopython) #

from machine import Pin
from time import sleep

led = Pin(25, Pin.OUT)

while True:
    led.toggle()
    sleep(0.5)

Code to blink internal led on Pico W (mircopython) #

Unlike the original Raspberry Pi Pico, the on-board LED on Pico W is not connected to a pin on RP2040, but instead to a GPIO pin on the wireless chip. MicroPython has been modified accordingly. 

from machine import Pin
from time import sleep

led = Pin("LED", machine.Pin.OUT)

while True:
    led.toggle()
    sleep(0.5)

Code to blink a led on GPIO 28 with toggle (mircopython) #

from machine import Pin
from time import sleep

led = Pin(28, Pin.OUT)

while True:
    led.toggle()
    sleep(0.5)

Code to blink a led on GPIO 28 with value (mircopython) #

from machine import Pin
from time import sleep

led = Pin(2, Pin.OUT)

while True:
  led.value(1) 
  sleep(.2)
  led.value(0)
  sleep(.2)