import machine
import time
led = machine.pin(15,machine.pin OUT)
while True:
    led.value(1)
    time.sleep(1)
    led.value(0)
    time sleep(1)
$abcdeabcde151015202530fghijfghij
BOOTSELLED1239USBRaspberryPiPico©2020RP2-8020/21P64M15.00TTT