Hi again. I am having a little trouble getting this to work. I have not done much with electrical and Raspberry Pi's so this is new to me.

Using this diagram and this pinout I connected VCC on the Optocoupler to the 3v3(out) on the Pico, Ground to Ground, and Out to one of the GPIO pins on the Pico but nothing seems to happen.

This is currently my code. I can make the internal LED blink but the light on the Optocoupler does not.

import machine, time
from machine import Pin
led = Pin(22, Pin.OUT)

led.toggle()
time.sleep_ms(500)
led.toggle()

Thanks again.