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Buzzer

Eliobot buzzer


Eliobot's buzzer is a passive buzzer, so it can emit sounds over a wide frequency range, much like old telephones.

Use with Elioblocs​

To use Eliobot's buzzer on Elioblocs, we use blocks from the sound category category to play a sound.

Use with Python​

To play notes in Python, we use the IO17 pin as a PWM output to be able to reproduce the desired frequency.

To play music, simply repeat the desired frequencies like in a score.

Elioblocs example​

Elioblocs buzzer example

Here, we play note C for 1 second and repeat forever.

Python example​

import board
import pwmio
import time

buzzer = pwmio.PWMOut(
                board.IO17, # Buzzer pin
                variable_frequency=True, # Allow changing the frequency
                ) # Create buzzer object

while True:
    buzzer.frequency = 262 # C note frequency
    time.sleep(1) # Wait 1 second
    buzzer.frequency = 0 # Stop sound
    time.sleep(1) # Wait 1 second

Here, we play note C for 1 second and repeat forever.