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https://github.com/james1236/buzzer_music

RPI Pico / Micropython library to play music through one or more buzzers, can automatically replace chords with fast arpeggios to simulate polyphony with a single buzzer. Music can be easily taken from onlinesequencer.net
https://github.com/james1236/buzzer_music

buzzer micropython passive-buzzer raspberry-pi raspberry-pi-pico rp2040 rpi-pico rpi-rp2

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RPI Pico / Micropython library to play music through one or more buzzers, can automatically replace chords with fast arpeggios to simulate polyphony with a single buzzer. Music can be easily taken from onlinesequencer.net

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README

        

# buzzer_music
Play thousands of songs on your Raspberry Pi Pico with a buzzer

Micropython library to play music through a buzzer, automatically replaces chords with fast arpeggios to simulate polyphony. Music can be easily taken from [onlinesequencer.net](https://onlinesequencer.net/)

Also supports playing music through multiple buzzers, dividing the currently playing notes across them for polyphony

### Online Simulator
See it working or test it out using this online simulator! [One Buzzer](https://wokwi.com/projects/384484222930823169) | [Multiple Buzzers](https://wokwi.com/projects/384484055755294721)


![buzzers](https://github.com/james1236/buzzer_music/assets/32351696/87245a5d-99e1-4d9d-a607-87499c3d1e27)


### Usage with RPi Pico / Other Micropython Board
1) Connect your buzzer to a ground pin and pin 0 on your Pico
2) Install micropython on your Pico and copy the files in this repository to it
3) Find some music on onlinesequencer.net (music aligned to the grid works best), click edit, select all notes with CTRL + A and then copy them with CTRL + C
4) Paste the string in place of the one in the example file, making sure to remove the "Online Sequencer:120233:" from the start and the ";:" from the end

You can pause and resume with `mySong.stop()` and `mySong.resume()`

### Board Compatibility
| Board | Compatible? |
|-------|-------------|
| Raspberry Pi Pico | Yes |
| Wemos D1 mini (ESP8266) | Yes [i8](/../../issues/8)|
| Raspberry Pi 3, 4 | Follow steps below |
| ESP32 | Yes [i14](/../../issues/14#issuecomment-2439775389)|

### Raspberry Pi 3, 4 Compatibility
The following code was contributed by [@Miniontoby](https://github.com/Miniontoby) in [i10](/../../issues/10), simply create a file called `machine.py` in the same folder as the other files and put this code in it:
```python3
import RPi.GPIO as GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)

class PWMchanged(GPIO.PWM):
def __init__(self, chan, freq):
super().__init__(chan, freq)
self.start(freq)
def duty(self,dutycycle): self.ChangeDutyCycle(dutycycle/65535)
def freq(self, value): self.ChangeFrequency(value)
def deinit(self): self.stop()
pass

def PWM(pin):
GPIO.setup(pin, GPIO.OUT) # Just to make sure
return PWMchanged(pin, 50)

def Pin(pin):
GPIO.setup(pin, GPIO.OUT)
return pin
```