# if passive buzzer is used, import the Speaker class from picozero
from picozero import Speaker
from gpiozero import LED
from time import sleep

# creating Speaker and LED objects
speaker = Speaker(15)  # Passive buzzer connected to GPIO Pin 15
led1 = LED(18)         # First LED connected to GPIO Pin 18
led2 = LED(23)         # Second LED connected to GPIO Pin 23

# continuously beep at 1 sec interval while the board has power
# note: a passive buzzer can also be used to play different tones
for _ in range(3):  # Ring the buzzer and light up LEDs for 3 seconds
    speaker.on()    # Turn on the buzzer
    led1.on()       # Turn on the first LED
    led2.on()       # Turn on the second LED
    sleep(1)        # Keep them on for 1 second
    speaker.off()   # Turn off the buzzer
    led1.off()      # Turn off the first LED
    led2.off()      # Turn off the second LED
    sleep(1)        # Wait for 1 second between beeps

# Clean up GPIO on program exit
speaker.close()
led1.close()
led2.close()