from machine import Pin
from time import sleep

led = Pin(15, Pin.OUT)

time_multiplier = 3  # this will multiply all durations to make it 3 times longer

# Define Morse code durations
DOT = 0.06 * time_multiplier  # Short blink duration
DASH = 0.18 * time_multiplier  # Long blink duration
GAP = 0.06 * time_multiplier  # Space between blinks
LETTER_GAP = 0.18 * time_multiplier  # Space between S and O, O and S

def blink(duration):    # Function to blink a dot or a dash
    led.value(1)
    sleep(duration)
    led.value(0)
    sleep(GAP)

def sos():  # Function to flash SOS in Morse code
    # "S" = dot-dot-dot
    print('flashing S')
    for _ in range(3):
        blink(DOT)
    sleep(LETTER_GAP)  # Space between letters

    # "O" = dash-dash-dash
    print('flashing O')
    for _ in range(3):
        blink(DASH)
    sleep(LETTER_GAP)  # Space between letters

    # "S" = dot-dot-dot
    print('flashing S')
    for _ in range(3):
        blink(DOT)
    print('')  # newline between words
    sleep(2)  # Space between words

while True: # Main loop
    sos()  # Keep repeating SOS signal