from machine import Pin, Timer
led = Pin("LED", Pin.OUT)
timer = Timer()
def blink(timer):
led.toggle()
timer.init(freq = 2.5, mode = Timer.PERIODIC, callback = blink)
![](https://blog.icysamon.com/wp-content/uploads/sites/2/2024/07/harrison-broadbent-c3YpscwJb04-unsplash-scaled.jpg)
from machine import Pin, Timer
led = Pin("LED", Pin.OUT)
timer = Timer()
def blink(timer):
led.toggle()
timer.init(freq = 2.5, mode = Timer.PERIODIC, callback = blink)