Raspberry Pi - Buzzer speaker via GPIO

Hardware

Dit voorbeeld laat zien hoe je een toon en duur kan laten horen met een buzzer of speaker via via de GPIO pinnen van een Raspberry Pi doormiddel van een Python script.

Wat is een piëzo-elektrische luidspreker

Een keramische luidspreker, ook wel piëzo-elektrische luidspreker genoemd, is een type luidspreker.

Het stralend element is hier een keramisch materiaal dat onder invloed van een aangelegde elektrische spanning vervormt. Het Piëzo-elektrisch effect. Sommige kristallijne of keramische materialen vervormen onder invloed van een aangelegde elektrische spanning.

Deze luidsprekers zijn gebaseerd op het feit dat bij sommige kristallen bij het aanbrengen van een spanning er een buiging van het kristal ontstaat. De beweging is beperkt. Daarom wordt dit principe enkel gebruikt bij tweeters. Een tweeter heeft over het algemeen een frequentiebereik van 2000 tot 20.000 hertz. Sommige tweeters gaan nog hoger, al is dit boven de gehoorgrens van het menselijk gehoor.

Het zijn goedkope en minder goede hoogtonige luidsprekers. Meestal vindt men ze ingebouwd in een trechtervormige plastic behuizing. Ze zijn alleen geschikt voor de hoge frequenties. De geluidskwaliteit is over het algemeen matig. Deze luidsprekers kan men aantreffen in polsuurwerken, goedkope boxen.

Het omgekeerde effect bestaat ook. Het Piëzo-elektrisch effect. Diezelfde materialen wekken een elektrische spanning op als ze vervormd worden. Dit effect wordt in tal van toepassingen gebruikt: Piëzo-elektrische en keramische pick-up elementen voor platendraaier, gitaar, microfoons. Gasaanstekers en sigarettenaanstekers.

Bron: Wikipedia

Aansluiten op de Raspberry Pi

Sluit de Buzzer speaker servo aan zoals aangegeven op onderstaand schema:

Script zonder toonfrequentie:

Met onderstaand python script kun je een simpel een duur opgeven om de speakerpin hoog te maken, te gebruiken bij een buzzer.

import RPi.GPIO as GPIO # Importeer de GPIO bibliotheek.
import time ## Importeer de bibliotheek voor tijdfuncties
 
buzzer_pin = 22  # Geef het nummer van de pin op waar de speaker is aangesloten.
GPIO.setmode(GPIO.BCM) # GebruikBroadcom GPIO benaming van de pinnen.
GPIO.setup(buzzer_pin, GPIO.OUT) # Zet de speaker pin als uitgang.

print "Druk op CTRL+C om het programma te beeindigen."

try:
  while True:
    GPIO.output(buzzer_pin, True) # Zet speakerpin hoog.
    time.sleep(.3) # Wacht even.
    GPIO.output(buzzer_pin, False) # Zet speakerpin laag.
    time.sleep(.5) # Wacht even.

except KeyboardInterrupt:  
  GPIO.output(buzzer_pin, False) # Zet speakerpin laag.
  # GPIO netjes afsluiten
  GPIO.cleanup()

import RPi.GPIO as GPIO # Importeer de GPIO bibliotheek.

import time ## Importeer de bibliotheek voor tijdfuncties

buzzer_pin = 22 # Geef het nummer van de pin op waar de speaker is aangesloten.

GPIO.setmode(GPIO.BCM) # GebruikBroadcom GPIO benaming van de pinnen.

GPIO.setup(buzzer_pin, GPIO.OUT) # Zet de speaker pin als uitgang.

print "Druk op CTRL+C om het programma te beeindigen."

try:

while True:

GPIO.output(buzzer_pin, True) # Zet speakerpin hoog.

time.sleep(.3) # Wacht even.

GPIO.output(buzzer_pin, False) # Zet speakerpin laag.

time.sleep(.5) # Wacht even.

except KeyboardInterrupt:

GPIO.output(buzzer_pin, False) # Zet speakerpin laag.

# GPIO netjes afsluiten

GPIO.cleanup()

Script met toonfrequentie

Met onderstaand python script kun je een frequentie en duur opgeven gevolgd door enter de speaker zal dan een toon laten horen.

Ps. commentaar regels in het script zijn Engels.

import RPi.GPIO as GPIO   #import the GPIO library
import time #import the time library

buzzer_pin = 22                   #set the buzzer pin variable to number 18
GPIO.setmode(GPIO.BCM)#Use the Broadcom method for naming the GPIO pins
GPIO.setup(buzzer_pin, GPIO.OUT)  #Set pin 22 as an output pin

def buzz(pitch, duration):   #create the function "buzz" and feed it the pitch and duration)
 period = 1.0 / pitch     #in physics, the period (sec/cyc) is the inverse of the frequency (cyc/sec)
 delay = period / 2     #calcuate the time for half of the wave
 cycles = int(duration * pitch)   #the number of waves to produce is the duration times the frequency

 for i in range(cycles):    #start a loop from 0 to the variable "cycles" calculated above
   GPIO.output(buzzer_pin, True)   #set pin 18 to high
   time.sleep(delay)    #wait with pin 18 high
   GPIO.output(buzzer_pin, False)    #set pin 18 to low
   time.sleep(delay)    #wait with pin 18 low

while True:    #start infinite loop
  pitch_s = raw_input("Enter Pitch (200 to 2000): ")   #ask the user to type in the pitch
  pitch = float(pitch_s)    #convert user input to a floating decimal
  duration_s = raw_input("Enter Duration (seconds): ")  #ask the user to type in the duration
  duration = float(duration_s)  #convert user input to a floating decimal
  buzz(pitch, duration)  #feed the pitch and duration to the function, "buzz"

import RPi.GPIO as GPIO #import the GPIO library

import time #import the time library

buzzer_pin = 22 #set the buzzer pin variable to number 18

GPIO.setmode(GPIO.BCM)#Use the Broadcom method for naming the GPIO pins

GPIO.setup(buzzer_pin, GPIO.OUT) #Set pin 22 as an output pin

def buzz(pitch, duration): #create the function "buzz" and feed it the pitch and duration)

period = 1.0 / pitch #in physics, the period (sec/cyc) is the inverse of the frequency (cyc/sec)

delay = period / 2 #calcuate the time for half of the wave

cycles = int(duration * pitch) #the number of waves to produce is the duration times the frequency

for i in range(cycles): #start a loop from 0 to the variable "cycles" calculated above

GPIO.output(buzzer_pin, True) #set pin 18 to high

time.sleep(delay) #wait with pin 18 high

GPIO.output(buzzer_pin, False) #set pin 18 to low

time.sleep(delay) #wait with pin 18 low

while True: #start infinite loop

pitch_s = raw_input("Enter Pitch (200 to 2000): ") #ask the user to type in the pitch

pitch = float(pitch_s) #convert user input to a floating decimal

duration_s = raw_input("Enter Duration (seconds): ") #ask the user to type in the duration

duration = float(duration_s) #convert user input to a floating decimal

buzz(pitch, duration) #feed the pitch and duration to the function, "buzz"

Start het script met: sudo python toon.py , druk op CTRL+C om het script te stoppen!

Bron: raspberrypikid.wordpress.com

Script with melodies

Source: https://github.com/gumslone/raspi_buzzer_player/blob/master/buzzer_player.py

#!/usr/bin/env python
#---------------------------------------------------
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org>
#---------------------------------------------------
# 
#		Passive buzzer 			   Pi 
#			VCC ----------------- 3.3V
#			GND ------------------ GND
#			SIG ---------------- Pin Gpio27
#
#		some notes for melodies were taken from:
#		http://www.astlessons.com/pianoforkids1.html
#		http://www.astlessons.com/pianoforkids2.html
#		where you can get more notes
#
#---------------------------------------------------
import RPi.GPIO as GPIO
import time

buzzer_pin = 27

notes = {
	'B0' : 31,
	'C1' : 33, 'CS1' : 35,
	'D1' : 37, 'DS1' : 39,
	'EB1' : 39,
	'E1' : 41,
	'F1' : 44, 'FS1' : 46,
	'G1' : 49, 'GS1' : 52,
	'A1' : 55, 'AS1' : 58,
	'BB1' : 58,
	'B1' : 62,
	'C2' : 65, 'CS2' : 69,
	'D2' : 73, 'DS2' : 78,
	'EB2' : 78,
	'E2' : 82,
	'F2' : 87, 'FS2' : 93,
	'G2' : 98, 'GS2' : 104,
	'A2' : 110, 'AS2' : 117,
	'BB2' : 123,
	'B2' : 123,
	'C3' : 131, 'CS3' : 139,
	'D3' : 147, 'DS3' : 156,
	'EB3' : 156,
	'E3' : 165,
	'F3' : 175, 'FS3' : 185,
	'G3' : 196, 'GS3' : 208,
	'A3' : 220, 'AS3' : 233,
	'BB3' : 233,
	'B3' : 247,
	'C4' : 262, 'CS4' : 277,
	'D4' : 294, 'DS4' : 311,
	'EB4' : 311,
	'E4' : 330,
	'F4' : 349, 'FS4' : 370,
	'G4' : 392, 'GS4' : 415,
	'A4' : 440, 'AS4' : 466,
	'BB4' : 466,
	'B4' : 494,
	'C5' : 523, 'CS5' : 554,
	'D5' : 587, 'DS5' : 622,
	'EB5' : 622,
	'E5' : 659,
	'F5' : 698, 'FS5' : 740,
	'G5' : 784, 'GS5' : 831,
	'A5' : 880, 'AS5' : 932,
	'BB5' : 932,
	'B5' : 988,
	'C6' : 1047, 'CS6' : 1109,
	'D6' : 1175, 'DS6' : 1245,
	'EB6' : 1245,
	'E6' : 1319,
	'F6' : 1397, 'FS6' : 1480,
	'G6' : 1568, 'GS6' : 1661,
	'A6' : 1760, 'AS6' : 1865,
	'BB6' : 1865,
	'B6' : 1976,
	'C7' : 2093, 'CS7' : 2217,
	'D7' : 2349, 'DS7' : 2489,
	'EB7' : 2489,
	'E7' : 2637,
	'F7' : 2794, 'FS7' : 2960,
	'G7' : 3136, 'GS7' : 3322,
	'A7' : 3520, 'AS7' : 3729,
	'BB7' : 3729,
	'B7' : 3951,
	'C8' : 4186, 'CS8' : 4435,
	'D8' : 4699, 'DS8' : 4978
}



melody = [
  notes['E7'], notes['E7'], 0, notes['E7'],
  0, notes['C7'], notes['E7'], 0,
  notes['G7'], 0, 0,  0,
  notes['G6'], 0, 0, 0,
 
  notes['C7'], 0, 0, notes['G6'],
  0, 0, notes['E6'], 0,
  0, notes['A6'], 0, notes['B6'],
  0, notes['AS6'], notes['A6'], 0,
 
  notes['G6'], notes['E7'], notes['G7'],
  notes['A7'], 0, notes['F7'], notes['G7'],
  0, notes['E7'], 0, notes['C7'],
  notes['D7'], notes['B6'], 0, 0,
 
  notes['C7'], 0, 0, notes['G6'],
  0, 0, notes['E6'], 0,
  0, notes['A6'], 0, notes['B6'],
  0, notes['AS6'], notes['A6'], 0,
 
  notes['G6'], notes['E7'], notes['G7'],
  notes['A7'], 0, notes['F7'], notes['G7'],
  0, notes['E7'], 0, notes['C7'],
  notes['D7'], notes['B6'], 0, 0
]
tempo = [
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
 
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
 
  9, 9, 9,
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
 
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
 
  9, 9, 9,
  12, 12, 12, 12,
  12, 12, 12, 12,
  12, 12, 12, 12,
]


underworld_melody = [
  notes['C4'], notes['C5'], notes['A3'], notes['A4'],
  notes['AS3'], notes['AS4'], 0,
  0,
  notes['C4'], notes['C5'], notes['A3'], notes['A4'],
  notes['AS3'], notes['AS4'], 0,
  0,
  notes['F3'], notes['F4'], notes['D3'], notes['D4'],
  notes['DS3'], notes['DS4'], 0,
  0,
  notes['F3'], notes['F4'], notes['D3'], notes['D4'],
  notes['DS3'], notes['DS4'], 0,
  0, notes['DS4'], notes['CS4'], notes['D4'],
  notes['CS4'], notes['DS4'],
  notes['DS4'], notes['GS3'],
  notes['G3'], notes['CS4'],
  notes['C4'], notes['FS4'], notes['F4'], notes['E3'], notes['AS4'], notes['A4'],
  notes['GS4'], notes['DS4'], notes['B3'],
  notes['AS3'], notes['A3'], notes['GS3'],
  0, 0, 0
]

underworld_tempo = [
  12, 12, 12, 12,
  12, 12, 6,
  3,
  12, 12, 12, 12,
  12, 12, 6,
  3,
  12, 12, 12, 12,
  12, 12, 6,
  3,
  12, 12, 12, 12,
  12, 12, 6,
  6, 18, 18, 18,
  6, 6,
  6, 6,
  6, 6,
  18, 18, 18, 18, 18, 18,
  10, 10, 10,
  10, 10, 10,
  3, 3, 3
]

adventure_time_melody = [
    notes['D5'], 
    notes['G5'], notes['G5'], notes['G5'], notes['G5'], notes['FS5'],
    notes['FS5'], notes['E5'], notes['D5'], notes['E5'], notes['D5'], notes['D5'],
    notes['C5'], notes['B5'], notes['A5'], notes['G4'],  
    0, notes['C5'], notes['B5'], notes['A5'], notes['G4'], 0,  
    notes['G5'], 0, notes['G5'], notes['G5'], 0, notes['G5'], 
    notes['FS5'], 0, notes['E5'], notes['E5'], notes['D5'], notes['D5'], 
    notes['C5'], notes['C5'], notes['C5'], notes['D5'], 
    notes['D5'], notes['A5'], notes['B5'], notes['A5'], notes['G4'], 
    notes['G5']
  ]
adventure_time_tempo = [
    24,
    24, 12, 12, 12, 24,
    12, 24, 24, 24, 12, 24,
    12, 12, 12, 12,
    24, 12, 24, 24, 12, 24,  
    24, 24, 24, 12, 24, 12, 
    24, 24, 24, 12, 12, 24, 
    8, 24, 24, 8, 
    8, 24, 12, 24, 24, 
    12 
  ]


star_wars_melody = [ 
					notes['G4'], notes['G4'], notes['G4'], 
					notes['EB4'], 0, notes['BB4'], notes['G4'], 
					notes['EB4'], 0, notes['BB4'], notes['G4'], 0,
					
					notes['D4'], notes['D4'], notes['D4'], 
					notes['EB4'], 0, notes['BB3'], notes['FS3'],
					notes['EB3'], 0, notes['BB3'], notes['G3'], 0,
					
					notes['G4'], 0, notes['G3'], notes['G3'], 0,
					notes['G4'], 0, notes['FS4'], notes['F4'], 
					notes['E4'], notes['EB4'], notes['E4'], 0,
					notes['GS3'], notes['CS3'], 0, 
					
					notes['C3'], notes['B3'], notes['BB3'], notes['A3'], notes['BB3'], 0,
					notes['EB3'], notes['FS3'], notes['EB3'], notes['FS3'], 
					notes['BB3'], 0, notes['G3'], notes['BB3'], notes['D4'], 0,
					
					
					notes['G4'], 0, notes['G3'], notes['G3'], 0,
					notes['G4'], 0, notes['FS4'], notes['F4'], 
					notes['E4'], notes['EB4'], notes['E4'], 0,
					notes['GS3'], notes['CS3'], 0, 
					
					notes['C3'], notes['B3'], notes['BB3'], notes['A3'], notes['BB3'], 0,
					
					notes['EB3'], notes['FS3'], notes['EB3'],  
					notes['BB3'], notes['G3'], notes['EB3'], 0, notes['BB3'], notes['G3'],
					]


star_wars_tempo = [
					2, 2, 2, 
					4, 8, 6, 2, 
					4, 8, 6, 2, 8,
					
					2, 2, 2,
					4, 8, 6, 2,
					4, 8, 6, 2, 8,
					
					2, 16, 4, 4, 8,
					2, 8, 4, 6,
					6, 4, 4, 8,
					4, 2, 8, 
					4, 4, 6, 4, 2, 8,
					4, 2, 4, 4, 
					2, 8, 4, 6, 2, 8,
					
					2, 16, 4, 4, 8,
					2, 8, 4, 6,
					6, 4, 4, 8,
					4, 2, 8, 
					4, 4, 6, 4, 2, 8,
					4, 2, 2, 
					4, 2, 4, 8, 4, 2,
					]

popcorn_melody = [
	
	notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'], 
	notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'], 
	
	notes['A4'], notes['B4'], notes['C5'], notes['B4'], notes['C5'], notes['A4'], notes['B4'], notes['A4'], notes['B4'], notes['G4'], 
	notes['A4'], notes['G4'],notes['A4'], notes['F4'], notes['A4'],
	
	
	notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'], 
	notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'], 
	
	notes['A4'], notes['B4'], notes['C5'], notes['B4'], notes['C5'], notes['A4'], notes['B4'], notes['A4'], notes['B4'], notes['G4'], 
	notes['A4'], notes['G4'],notes['A4'], notes['B4'], notes['C5'],
	
	notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'], 
	notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'], 
	
	notes['E5'], notes['FS5'], notes['G5'], notes['FS5'], notes['G5'], notes['E5'], notes['FS5'], notes['E5'], notes['FS5'], notes['D5'], 
	notes['E5'], notes['D5'],notes['E5'], notes['C5'], notes['E5'],
	
	###
	
	notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'], 
	notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'], 
	
	notes['E5'], notes['FS5'], notes['G5'], notes['FS5'], notes['G5'], notes['E5'], notes['FS5'], notes['E5'], notes['FS5'], notes['D5'], 
	notes['E5'], notes['D5'],notes['B4'], notes['D5'], notes['E5'],
]
popcorn_tempo = [
	8,8,8,8,8,8,4,
	8,8,8,8,8,8,4,
	
	8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,4,
	
	8,8,8,8,8,8,4,
	8,8,8,8,8,8,4,
	
	8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,4,
	
	8,8,8,8,8,8,4,
	8,8,8,8,8,8,4,
	
	8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,4,
	
	8,8,8,8,8,8,4,
	8,8,8,8,8,8,4,
	
	8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,4,
]

twinkle_twinkle_melody = [
	notes['C4'], notes['C4'], notes['G4'], notes['G4'], notes['A4'], notes['A4'], notes['G4'],
	notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'], notes['D4'], notes['C4'],
	
	notes['G4'], notes['G4'], notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'],
	notes['G4'], notes['G4'], notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'],
	
	notes['C4'], notes['C4'], notes['G4'], notes['G4'], notes['A4'], notes['A4'], notes['G4'],
	notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'], notes['D4'], notes['C4'],
]

twinkle_twinkle_tempo = [
	4,4,4,4,4,4,2,
	4,4,4,4,4,4,2,
	
	4,4,4,4,4,4,2,
	4,4,4,4,4,4,2,
	
	4,4,4,4,4,4,2,
	4,4,4,4,4,4,2,
]

crazy_frog_melody = [
	notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'], 
	notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],
	notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'], 
	notes['A4'],0,
	
	notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'], 
	notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],
	notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'], 
	notes['A4'],0,
	
	
	notes['A3'], notes['G3'], notes['E3'], notes['D3'],
	
	notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'], 
	notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],
	notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'], 
	notes['A4'],
]

crazy_frog_tempo = [
	2,4,4,8,4,4,4,
	2,4,4,8,4,4,4,
	4,4,4,8,4,8,4,4,
	1,4,
	
	2,4,4,8,4,4,4,
	2,4,4,8,4,4,4,
	4,4,4,8,4,8,4,4,
	1,4,
	
	8,4,4,4,
	
	2,4,4,8,4,4,4,
	2,4,4,8,4,4,4,
	4,4,4,8,4,8,4,4,
	1,
]

deck_the_halls_melody = [
	notes['G5'], notes['F5'], notes['E5'], notes['D5'],
	notes['C5'], notes['D5'], notes['E5'], notes['C5'],
	notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],
	notes['C5'], notes['B4'], notes['C5'], 0,
	
	notes['G5'], notes['F5'], notes['E5'], notes['D5'],
	notes['C5'], notes['D5'], notes['E5'], notes['C5'],
	notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],
	notes['C5'], notes['B4'], notes['C5'], 0,
	
	notes['D5'], notes['E5'], notes['F5'], notes['D5'],
	notes['E5'], notes['F5'], notes['G5'], notes['D5'],
	notes['E5'], notes['F5'], notes['G5'], notes['A5'], notes['B5'], notes['C6'],
	notes['B5'], notes['A5'], notes['G5'], 0,
	
	notes['G5'], notes['F5'], notes['E5'], notes['D5'],
	notes['C5'], notes['D5'], notes['E5'], notes['C5'],
	notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],
	notes['C5'], notes['B4'], notes['C5'], 0,
]

deck_the_halls_tempo = [
	2, 4, 2, 2,
	2, 2, 2, 2,
	4, 4, 4, 4, 2, 4,
	2, 2, 2, 2,
	
	2, 4, 2, 2,
	2, 2, 2, 2,
	4, 4, 4, 4, 2, 4,
	2, 2, 2, 2,
	
	2,4,2,2,
	2,4,2,2,
	4,4,2,4,4,2,
	2,2,2,2,
	
	2, 4, 2, 2,
	2, 2, 2, 2,
	4, 4, 4, 4, 2, 4,
	2, 2, 2, 2,
]

manaderna_melody = [
	notes['E4'],notes['E4'],notes['F4'],notes['G4'],
	notes['G4'],notes['F4'],notes['E4'],notes['D4'],
	notes['C4'],notes['C4'],notes['D4'],notes['E4'],
	notes['E4'],0,notes['D4'],notes['D4'],0,
	
	notes['E4'],notes['E4'],notes['F4'],notes['G4'],
	notes['G4'],notes['F4'],notes['E4'],notes['D4'],
	notes['C4'],notes['C4'],notes['D4'],notes['E4'],
	notes['D4'],0,notes['C4'],notes['C4'],0,
	
	notes['D4'],notes['D4'],notes['E4'],notes['C4'],
	notes['D4'],notes['E4'],notes['F4'],notes['E4'],notes['C4'],
	notes['D4'],notes['E4'],notes['F4'],notes['E4'],notes['D4'],
	notes['C4'],notes['D4'],notes['G3'],0,
	
	notes['E4'],notes['E4'],notes['F4'],notes['G4'],
	notes['G4'],notes['F4'],notes['E4'],notes['D4'],
	notes['C4'],notes['C4'],notes['D4'],notes['E4'],
	notes['D4'],0,notes['C4'],notes['C4'],
]

manaderna_tempo = [
	2,2,2,2,
	2,2,2,2,
	2,2,2,2,
	2,4,4,2,4,
	
	2,2,2,2,
	2,2,2,2,
	2,2,2,2,
	2,4,4,2,4,
	
	2,2,2,2,
	2,4,4,2,2,
	2,4,4,2,2,
	2,2,1,4,
	
	2,2,2,2,
	2,2,2,2,
	2,2,2,2,
	2,4,4,2,
]

bonnagard_melody = [
	notes['C5'],notes['C5'],notes['C5'],notes['G4'],
	notes['A4'],notes['A4'],notes['G4'],
	notes['E5'],notes['E5'],notes['D5'],notes['D5'],
	notes['C5'],0,notes['G4'],
	
	notes['C5'],notes['C5'],notes['C5'],notes['G4'],
	notes['A4'],notes['A4'],notes['G4'],
	notes['E5'],notes['E5'],notes['D5'],notes['D5'],
	notes['C5'],0,notes['G4'],notes['G4'],
	
	notes['C5'],notes['C5'],notes['C5'],notes['G4'],notes['G4'],
	notes['C5'],notes['C5'],notes['G4'],
	notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],
	notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],0,
	
	notes['C5'],notes['C5'],notes['C5'],notes['G4'],
	notes['A4'],notes['A4'],notes['G4'],
	notes['E5'],notes['E5'],notes['D5'],notes['D5'],
	notes['C5'],0,
]

bonnagard_tempo = [
	2,2,2,2,
	2,2,1,
	2,2,2,2,
	1,2,2,
	
	2,2,2,2,
	2,2,1,
	2,2,2,2,
	1,2,4,4,
	
	2,2,2,4,4,
	2,2,1,
	4,4,2,4,4,2,
	4,4,4,4,2,2,4,
	
	2,2,2,2,
	2,2,1,
	2,2,2,2,
	1,1,
]

final_countdown_melody = [
	notes['A3'],notes['E5'],notes['D5'],notes['E5'],notes['A4'],
	notes['F3'],notes['F5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],
	notes['D3'],notes['F5'],notes['E5'],notes['F5'],notes['A4'],
	notes['G3'],0,notes['D5'],notes['C5'],notes['D5'],notes['C5'],notes['B4'],notes['D5'],
	notes['C5'],notes['A3'],notes['E5'],notes['D5'],notes['E5'],notes['A4'],
	notes['F3'],notes['F5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],
	notes['D3'],notes['F5'],notes['E5'],notes['F5'],notes['A4'],
	notes['G3'],0,notes['D5'],notes['C5'],notes['D5'],notes['C5'],notes['B4'],notes['D5'],
	notes['C5'],notes['B4'],notes['C5'],notes['D5'],notes['C5'],notes['D5'],
	notes['E5'],notes['D5'],notes['C5'],notes['B4'],notes['A4'],notes['F5'],
	notes['E5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],
	notes['E5'],
]

final_countdown_tempo = [
	1,16,16,4,4,
	1,16,16,8,8,4,
	1,16,16,4,4,
	2,4,16,16,8,8,8,8,
	4,4,16,16,4,4,
	1,16,16,8,8,4,
	1,16,16,4,4,
	2,4,16,16,8,8,8,8,
	4,16,16,4,16,16,
	8,8,8,8,4,4,
	2,8,4,16,16,
	1,
]

def buzz(frequency, length):	 #create the function "buzz" and feed it the pitch and duration)

	if(frequency==0):
		time.sleep(length)
		return
	period = 1.0 / frequency 		 #in physics, the period (sec/cyc) is the inverse of the frequency (cyc/sec)
	delayValue = period / 2		 #calcuate the time for half of the wave
	numCycles = int(length * frequency)	 #the number of waves to produce is the duration times the frequency
	
	for i in range(numCycles):		#start a loop from 0 to the variable "cycles" calculated above
		GPIO.output(buzzer_pin, True)	 #set pin 27 to high
		time.sleep(delayValue)		#wait with pin 27 high
		GPIO.output(buzzer_pin, False)		#set pin 27 to low
		time.sleep(delayValue)		#wait with pin 27 low
	


def setup():
	GPIO.setmode(GPIO.BCM)
	GPIO.setup(buzzer_pin, GPIO.IN)
	GPIO.setup(buzzer_pin, GPIO.OUT)
	
def destroy():
	GPIO.cleanup()				# Release resource
	

def play(melody,tempo,pause,pace=0.800):
	
	for i in range(0, len(melody)):		# Play song
		
		noteDuration = pace/tempo[i]
		buzz(melody[i],noteDuration)	# Change the frequency along the song note
		
		pauseBetweenNotes = noteDuration * pause
		time.sleep(pauseBetweenNotes)
	
	

if __name__ == '__main__':		# Program start from here
	try:
		setup()
		print "The Final Countdown"
		play(final_countdown_melody, final_countdown_tempo, 0.30, 1.2000)
		time.sleep(2)
		print "Per Olssons Bonnagard (Old MacDonald Had A Farm) Melody"
		play(bonnagard_melody, bonnagard_tempo, 0.30, 0.800)
		time.sleep(2)
		print "Manaderna (Symphony No. 9) Melody"
		play(manaderna_melody, manaderna_tempo, 0.30, 0.800)
		time.sleep(2)
		print "Deck The Halls Melody"
		play(deck_the_halls_melody, deck_the_halls_tempo, 0.30, 0.800)
		time.sleep(2)
		print "Crazy Frog (Axel F) Theme"
		play(crazy_frog_melody, crazy_frog_tempo, 0.30, 0.900)
		time.sleep(2)
		print "Twinkle, Twinkle, Little Star Melody"
		play(twinkle_twinkle_melody, twinkle_twinkle_tempo, 0.50, 1.000)
		time.sleep(2)
		print "Popcorn Melody"
		play(popcorn_melody, popcorn_tempo, 0.50, 1.000)
		time.sleep(2)
		print "Star Wars Theme"
		play(star_wars_melody, star_wars_tempo, 0.50, 1.000)
		time.sleep(2)
		print "Super Mario Theme"
		play(melody, tempo, 1.3, 0.800)
		time.sleep(2)
		print "Super Mario Underworld Theme"
		play(underworld_melody, underworld_tempo, 1.3, 0.800)
		time.sleep(2)
		print "Adventure Time Theme"
		play(adventure_time_melody, adventure_time_tempo, 1.3, 1.500)
		
		destroy()
	except KeyboardInterrupt:  	# When 'Ctrl+C' is pressed, the child program destroy() will be  executed.
		destroy()

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#!/usr/bin/env python

#---------------------------------------------------

# This is free and unencumbered software released into the public domain.

# Anyone is free to copy, modify, publish, use, compile, sell, or

# distribute this software, either in source code form or as a compiled

# binary, for any purpose, commercial or non-commercial, and by any

# means.

# In jurisdictions that recognize copyright laws, the author or authors

# of this software dedicate any and all copyright interest in the

# software to the public domain. We make this dedication for the benefit

# of the public at large and to the detriment of our heirs and

# successors. We intend this dedication to be an overt act of

# relinquishment in perpetuity of all present and future rights to this

# software under copyright law.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR

# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

# OTHER DEALINGS IN THE SOFTWARE.

# For more information, please refer to <http://unlicense.org>

#---------------------------------------------------

# Passive buzzer Pi

# VCC ----------------- 3.3V

# GND ------------------ GND

# SIG ---------------- Pin Gpio27

# some notes for melodies were taken from:

# http://www.astlessons.com/pianoforkids1.html

# http://www.astlessons.com/pianoforkids2.html

# where you can get more notes

#---------------------------------------------------

import RPi.GPIO as GPIO

import time

buzzer_pin = 27

notes = {

'B0' : 31,

'C1' : 33, 'CS1' : 35,

'D1' : 37, 'DS1' : 39,

'EB1' : 39,

'E1' : 41,

'F1' : 44, 'FS1' : 46,

'G1' : 49, 'GS1' : 52,

'A1' : 55, 'AS1' : 58,

'BB1' : 58,

'B1' : 62,

'C2' : 65, 'CS2' : 69,

'D2' : 73, 'DS2' : 78,

'EB2' : 78,

'E2' : 82,

'F2' : 87, 'FS2' : 93,

'G2' : 98, 'GS2' : 104,

'A2' : 110, 'AS2' : 117,

'BB2' : 123,

'B2' : 123,

'C3' : 131, 'CS3' : 139,

'D3' : 147, 'DS3' : 156,

'EB3' : 156,

'E3' : 165,

'F3' : 175, 'FS3' : 185,

'G3' : 196, 'GS3' : 208,

'A3' : 220, 'AS3' : 233,

'BB3' : 233,

'B3' : 247,

'C4' : 262, 'CS4' : 277,

'D4' : 294, 'DS4' : 311,

'EB4' : 311,

'E4' : 330,

'F4' : 349, 'FS4' : 370,

'G4' : 392, 'GS4' : 415,

'A4' : 440, 'AS4' : 466,

'BB4' : 466,

'B4' : 494,

'C5' : 523, 'CS5' : 554,

'D5' : 587, 'DS5' : 622,

'EB5' : 622,

'E5' : 659,

'F5' : 698, 'FS5' : 740,

'G5' : 784, 'GS5' : 831,

'A5' : 880, 'AS5' : 932,

'BB5' : 932,

'B5' : 988,

'C6' : 1047, 'CS6' : 1109,

'D6' : 1175, 'DS6' : 1245,

'EB6' : 1245,

'E6' : 1319,

'F6' : 1397, 'FS6' : 1480,

'G6' : 1568, 'GS6' : 1661,

'A6' : 1760, 'AS6' : 1865,

'BB6' : 1865,

'B6' : 1976,

'C7' : 2093, 'CS7' : 2217,

'D7' : 2349, 'DS7' : 2489,

'EB7' : 2489,

'E7' : 2637,

'F7' : 2794, 'FS7' : 2960,

'G7' : 3136, 'GS7' : 3322,

'A7' : 3520, 'AS7' : 3729,

'BB7' : 3729,

'B7' : 3951,

'C8' : 4186, 'CS8' : 4435,

'D8' : 4699, 'DS8' : 4978

}

melody = [

notes['E7'], notes['E7'], 0, notes['E7'],

0, notes['C7'], notes['E7'], 0,

notes['G7'], 0, 0, 0,

notes['G6'], 0, 0, 0,

notes['C7'], 0, 0, notes['G6'],

0, 0, notes['E6'], 0,

0, notes['A6'], 0, notes['B6'],

0, notes['AS6'], notes['A6'], 0,

notes['G6'], notes['E7'], notes['G7'],

notes['A7'], 0, notes['F7'], notes['G7'],

0, notes['E7'], 0, notes['C7'],

notes['D7'], notes['B6'], 0, 0,

notes['C7'], 0, 0, notes['G6'],

0, 0, notes['E6'], 0,

0, notes['A6'], 0, notes['B6'],

0, notes['AS6'], notes['A6'], 0,

notes['G6'], notes['E7'], notes['G7'],

notes['A7'], 0, notes['F7'], notes['G7'],

0, notes['E7'], 0, notes['C7'],

notes['D7'], notes['B6'], 0, 0

]

tempo = [

12, 12, 12, 12,

9, 9, 9,

12, 12, 12, 12,

9, 9, 9,

12, 12, 12, 12,

]

underworld_melody = [

notes['C4'], notes['C5'], notes['A3'], notes['A4'],

notes['AS3'], notes['AS4'], 0,

notes['C4'], notes['C5'], notes['A3'], notes['A4'],

notes['AS3'], notes['AS4'], 0,

notes['F3'], notes['F4'], notes['D3'], notes['D4'],

notes['DS3'], notes['DS4'], 0,

notes['F3'], notes['F4'], notes['D3'], notes['D4'],

notes['DS3'], notes['DS4'], 0,

0, notes['DS4'], notes['CS4'], notes['D4'],

notes['CS4'], notes['DS4'],

notes['DS4'], notes['GS3'],

notes['G3'], notes['CS4'],

notes['C4'], notes['FS4'], notes['F4'], notes['E3'], notes['AS4'], notes['A4'],

notes['GS4'], notes['DS4'], notes['B3'],

notes['AS3'], notes['A3'], notes['GS3'],

0, 0, 0

]

underworld_tempo = [

12, 12, 12, 12,

12, 12, 6,

12, 12, 12, 12,

12, 12, 6,

12, 12, 12, 12,

12, 12, 6,

12, 12, 12, 12,

12, 12, 6,

6, 18, 18, 18,

6, 6,

18, 18, 18, 18, 18, 18,

10, 10, 10,

3, 3, 3

]

adventure_time_melody = [

notes['D5'],

notes['G5'], notes['G5'], notes['G5'], notes['G5'], notes['FS5'],

notes['FS5'], notes['E5'], notes['D5'], notes['E5'], notes['D5'], notes['D5'],

notes['C5'], notes['B5'], notes['A5'], notes['G4'],

0, notes['C5'], notes['B5'], notes['A5'], notes['G4'], 0,

notes['G5'], 0, notes['G5'], notes['G5'], 0, notes['G5'],

notes['FS5'], 0, notes['E5'], notes['E5'], notes['D5'], notes['D5'],

notes['C5'], notes['C5'], notes['C5'], notes['D5'],

notes['D5'], notes['A5'], notes['B5'], notes['A5'], notes['G4'],

notes['G5']

]

adventure_time_tempo = [

24,

24, 12, 12, 12, 24,

12, 24, 24, 24, 12, 24,

12, 12, 12, 12,

24, 12, 24, 24, 12, 24,

24, 24, 24, 12, 24, 12,

24, 24, 24, 12, 12, 24,

8, 24, 24, 8,

8, 24, 12, 24, 24,

]

star_wars_melody = [

notes['G4'], notes['G4'], notes['G4'],

notes['EB4'], 0, notes['BB4'], notes['G4'],

notes['EB4'], 0, notes['BB4'], notes['G4'], 0,

notes['D4'], notes['D4'], notes['D4'],

notes['EB4'], 0, notes['BB3'], notes['FS3'],

notes['EB3'], 0, notes['BB3'], notes['G3'], 0,

notes['G4'], 0, notes['G3'], notes['G3'], 0,

notes['G4'], 0, notes['FS4'], notes['F4'],

notes['E4'], notes['EB4'], notes['E4'], 0,

notes['GS3'], notes['CS3'], 0,

notes['C3'], notes['B3'], notes['BB3'], notes['A3'], notes['BB3'], 0,

notes['EB3'], notes['FS3'], notes['EB3'], notes['FS3'],

notes['BB3'], 0, notes['G3'], notes['BB3'], notes['D4'], 0,

notes['G4'], 0, notes['G3'], notes['G3'], 0,

notes['G4'], 0, notes['FS4'], notes['F4'],

notes['E4'], notes['EB4'], notes['E4'], 0,

notes['GS3'], notes['CS3'], 0,

notes['C3'], notes['B3'], notes['BB3'], notes['A3'], notes['BB3'], 0,

notes['EB3'], notes['FS3'], notes['EB3'],

notes['BB3'], notes['G3'], notes['EB3'], 0, notes['BB3'], notes['G3'],

]

star_wars_tempo = [

2, 2, 2,

4, 8, 6, 2,

4, 8, 6, 2, 8,

2, 2, 2,

4, 8, 6, 2,

4, 8, 6, 2, 8,

2, 16, 4, 4, 8,

2, 8, 4, 6,

6, 4, 4, 8,

4, 2, 8,

4, 4, 6, 4, 2, 8,

4, 2, 4, 4,

2, 8, 4, 6, 2, 8,

2, 16, 4, 4, 8,

2, 8, 4, 6,

6, 4, 4, 8,

4, 2, 8,

4, 4, 6, 4, 2, 8,

4, 2, 2,

4, 2, 4, 8, 4, 2,

]

popcorn_melody = [

notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'],

notes['A4'], notes['B4'], notes['C5'], notes['B4'], notes['C5'], notes['A4'], notes['B4'], notes['A4'], notes['B4'], notes['G4'],

notes['A4'], notes['G4'],notes['A4'], notes['F4'], notes['A4'],

notes['A4'], notes['G4'], notes['A4'], notes['E4'], notes['C4'], notes['E4'], notes['A3'],

notes['A4'], notes['B4'], notes['C5'], notes['B4'], notes['C5'], notes['A4'], notes['B4'], notes['A4'], notes['B4'], notes['G4'],

notes['A4'], notes['G4'],notes['A4'], notes['B4'], notes['C5'],

notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'],

notes['E5'], notes['FS5'], notes['G5'], notes['FS5'], notes['G5'], notes['E5'], notes['FS5'], notes['E5'], notes['FS5'], notes['D5'],

notes['E5'], notes['D5'],notes['E5'], notes['C5'], notes['E5'],

###

notes['E5'], notes['D5'], notes['E5'], notes['C5'], notes['G4'], notes['C5'], notes['E4'],

notes['E5'], notes['FS5'], notes['G5'], notes['FS5'], notes['G5'], notes['E5'], notes['FS5'], notes['E5'], notes['FS5'], notes['D5'],

notes['E5'], notes['D5'],notes['B4'], notes['D5'], notes['E5'],

]

popcorn_tempo = [

8,8,8,8,8,8,4,

8,8,8,8,8,8,8,8,8,8,

8,8,8,8,4,

8,8,8,8,8,8,4,

8,8,8,8,8,8,8,8,8,8,

8,8,8,8,4,

8,8,8,8,8,8,4,

8,8,8,8,8,8,8,8,8,8,

8,8,8,8,4,

8,8,8,8,8,8,4,

8,8,8,8,8,8,8,8,8,8,

8,8,8,8,4,

]

twinkle_twinkle_melody = [

notes['C4'], notes['C4'], notes['G4'], notes['G4'], notes['A4'], notes['A4'], notes['G4'],

notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'], notes['D4'], notes['C4'],

notes['G4'], notes['G4'], notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'],

notes['C4'], notes['C4'], notes['G4'], notes['G4'], notes['A4'], notes['A4'], notes['G4'],

notes['F4'], notes['F4'], notes['E4'], notes['E4'], notes['D4'], notes['D4'], notes['C4'],

]

twinkle_twinkle_tempo = [

4,4,4,4,4,4,2,

]

crazy_frog_melody = [

notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'],

notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],

notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'],

notes['A4'],0,

notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'],

notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],

notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'],

notes['A4'],0,

notes['A3'], notes['G3'], notes['E3'], notes['D3'],

notes['A4'], notes['C5'], notes['A4'], notes['A4'], notes['D5'], notes['A4'], notes['G4'],

notes['A4'], notes['E5'], notes['A4'], notes['A4'], notes['F5'], notes['E5'], notes['C5'],

notes['A4'], notes['E5'], notes['A5'], notes['A4'], notes['G4'], notes['G4'], notes['E4'], notes['B4'],

notes['A4'],

]

crazy_frog_tempo = [

2,4,4,8,4,4,4,

4,4,4,8,4,8,4,4,

1,4,

2,4,4,8,4,4,4,

4,4,4,8,4,8,4,4,

1,4,

8,4,4,4,

2,4,4,8,4,4,4,

4,4,4,8,4,8,4,4,

]

deck_the_halls_melody = [

notes['G5'], notes['F5'], notes['E5'], notes['D5'],

notes['C5'], notes['D5'], notes['E5'], notes['C5'],

notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],

notes['C5'], notes['B4'], notes['C5'], 0,

notes['G5'], notes['F5'], notes['E5'], notes['D5'],

notes['C5'], notes['D5'], notes['E5'], notes['C5'],

notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],

notes['C5'], notes['B4'], notes['C5'], 0,

notes['D5'], notes['E5'], notes['F5'], notes['D5'],

notes['E5'], notes['F5'], notes['G5'], notes['D5'],

notes['E5'], notes['F5'], notes['G5'], notes['A5'], notes['B5'], notes['C6'],

notes['B5'], notes['A5'], notes['G5'], 0,

notes['G5'], notes['F5'], notes['E5'], notes['D5'],

notes['C5'], notes['D5'], notes['E5'], notes['C5'],

notes['D5'], notes['E5'], notes['F5'], notes['D5'], notes['E5'], notes['D5'],

notes['C5'], notes['B4'], notes['C5'], 0,

]

deck_the_halls_tempo = [

2, 4, 2, 2,

2, 2, 2, 2,

4, 4, 4, 4, 2, 4,

2, 2, 2, 2,

2, 4, 2, 2,

2, 2, 2, 2,

4, 4, 4, 4, 2, 4,

2, 2, 2, 2,

2,4,2,2,

4,4,2,4,4,2,

2,2,2,2,

2, 4, 2, 2,

2, 2, 2, 2,

4, 4, 4, 4, 2, 4,

2, 2, 2, 2,

]

manaderna_melody = [

notes['E4'],notes['E4'],notes['F4'],notes['G4'],

notes['G4'],notes['F4'],notes['E4'],notes['D4'],

notes['C4'],notes['C4'],notes['D4'],notes['E4'],

notes['E4'],0,notes['D4'],notes['D4'],0,

notes['E4'],notes['E4'],notes['F4'],notes['G4'],

notes['G4'],notes['F4'],notes['E4'],notes['D4'],

notes['C4'],notes['C4'],notes['D4'],notes['E4'],

notes['D4'],0,notes['C4'],notes['C4'],0,

notes['D4'],notes['D4'],notes['E4'],notes['C4'],

notes['D4'],notes['E4'],notes['F4'],notes['E4'],notes['C4'],

notes['D4'],notes['E4'],notes['F4'],notes['E4'],notes['D4'],

notes['C4'],notes['D4'],notes['G3'],0,

notes['E4'],notes['E4'],notes['F4'],notes['G4'],

notes['G4'],notes['F4'],notes['E4'],notes['D4'],

notes['C4'],notes['C4'],notes['D4'],notes['E4'],

notes['D4'],0,notes['C4'],notes['C4'],

]

manaderna_tempo = [

2,2,2,2,

2,4,4,2,4,

2,2,2,2,

2,4,4,2,4,

2,2,2,2,

2,4,4,2,2,

2,2,1,4,

2,2,2,2,

2,4,4,2,

]

bonnagard_melody = [

notes['C5'],notes['C5'],notes['C5'],notes['G4'],

notes['A4'],notes['A4'],notes['G4'],

notes['E5'],notes['E5'],notes['D5'],notes['D5'],

notes['C5'],0,notes['G4'],

notes['C5'],notes['C5'],notes['C5'],notes['G4'],

notes['A4'],notes['A4'],notes['G4'],

notes['E5'],notes['E5'],notes['D5'],notes['D5'],

notes['C5'],0,notes['G4'],notes['G4'],

notes['C5'],notes['C5'],notes['C5'],notes['G4'],notes['G4'],

notes['C5'],notes['C5'],notes['G4'],

notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],

notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],notes['C5'],0,

notes['C5'],notes['C5'],notes['C5'],notes['G4'],

notes['A4'],notes['A4'],notes['G4'],

notes['E5'],notes['E5'],notes['D5'],notes['D5'],

notes['C5'],0,

]

bonnagard_tempo = [

2,2,2,2,

2,2,1,

2,2,2,2,

1,2,2,

2,2,2,2,

2,2,1,

2,2,2,2,

1,2,4,4,

2,2,2,4,4,

2,2,1,

4,4,2,4,4,2,

4,4,4,4,2,2,4,

2,2,2,2,

2,2,1,

2,2,2,2,

1,1,

]

final_countdown_melody = [

notes['A3'],notes['E5'],notes['D5'],notes['E5'],notes['A4'],

notes['F3'],notes['F5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],

notes['D3'],notes['F5'],notes['E5'],notes['F5'],notes['A4'],

notes['G3'],0,notes['D5'],notes['C5'],notes['D5'],notes['C5'],notes['B4'],notes['D5'],

notes['C5'],notes['A3'],notes['E5'],notes['D5'],notes['E5'],notes['A4'],

notes['F3'],notes['F5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],

notes['D3'],notes['F5'],notes['E5'],notes['F5'],notes['A4'],

notes['G3'],0,notes['D5'],notes['C5'],notes['D5'],notes['C5'],notes['B4'],notes['D5'],

notes['C5'],notes['B4'],notes['C5'],notes['D5'],notes['C5'],notes['D5'],

notes['E5'],notes['D5'],notes['C5'],notes['B4'],notes['A4'],notes['F5'],

notes['E5'],notes['E5'],notes['F5'],notes['E5'],notes['D5'],

notes['E5'],

]

final_countdown_tempo = [

1,16,16,4,4,

1,16,16,8,8,4,

1,16,16,4,4,

2,4,16,16,8,8,8,8,

4,4,16,16,4,4,

1,16,16,8,8,4,

1,16,16,4,4,

2,4,16,16,8,8,8,8,

4,16,16,4,16,16,

8,8,8,8,4,4,

2,8,4,16,16,

]

def buzz(frequency, length): #create the function "buzz" and feed it the pitch and duration)

if(frequency==0):

time.sleep(length)

return

period = 1.0 / frequency #in physics, the period (sec/cyc) is the inverse of the frequency (cyc/sec)

delayValue = period / 2 #calcuate the time for half of the wave

numCycles = int(length * frequency) #the number of waves to produce is the duration times the frequency

for i in range(numCycles): #start a loop from 0 to the variable "cycles" calculated above

GPIO.output(buzzer_pin, True) #set pin 27 to high

time.sleep(delayValue) #wait with pin 27 high

GPIO.output(buzzer_pin, False) #set pin 27 to low

time.sleep(delayValue) #wait with pin 27 low

def setup():

GPIO.setmode(GPIO.BCM)

GPIO.setup(buzzer_pin, GPIO.IN)

GPIO.setup(buzzer_pin, GPIO.OUT)

def destroy():

GPIO.cleanup() # Release resource

def play(melody,tempo,pause,pace=0.800):

for i in range(0, len(melody)): # Play song

noteDuration = pace/tempo[i]

buzz(melody[i],noteDuration) # Change the frequency along the song note

pauseBetweenNotes = noteDuration * pause

time.sleep(pauseBetweenNotes)

if __name__ == '__main__': # Program start from here

try:

setup()

print "The Final Countdown"

play(final_countdown_melody, final_countdown_tempo, 0.30, 1.2000)

time.sleep(2)

print "Per Olssons Bonnagard (Old MacDonald Had A Farm) Melody"

play(bonnagard_melody, bonnagard_tempo, 0.30, 0.800)

time.sleep(2)

print "Manaderna (Symphony No. 9) Melody"

play(manaderna_melody, manaderna_tempo, 0.30, 0.800)

time.sleep(2)

print "Deck The Halls Melody"

play(deck_the_halls_melody, deck_the_halls_tempo, 0.30, 0.800)

time.sleep(2)

print "Crazy Frog (Axel F) Theme"

play(crazy_frog_melody, crazy_frog_tempo, 0.30, 0.900)

time.sleep(2)

print "Twinkle, Twinkle, Little Star Melody"

play(twinkle_twinkle_melody, twinkle_twinkle_tempo, 0.50, 1.000)

time.sleep(2)

print "Popcorn Melody"

play(popcorn_melody, popcorn_tempo, 0.50, 1.000)

time.sleep(2)

print "Star Wars Theme"

play(star_wars_melody, star_wars_tempo, 0.50, 1.000)

time.sleep(2)

print "Super Mario Theme"

play(melody, tempo, 1.3, 0.800)

time.sleep(2)

print "Super Mario Underworld Theme"

play(underworld_melody, underworld_tempo, 1.3, 0.800)

time.sleep(2)

print "Adventure Time Theme"

play(adventure_time_melody, adventure_time_tempo, 1.3, 1.500)

destroy()

except KeyboardInterrupt: # When 'Ctrl+C' is pressed, the child program destroy() will be executed.

destroy()

Zoeken

Raspberry Pi – Buzzer speaker via GPIO

Hardware

Wat is een piëzo-elektrische luidspreker

Aansluiten op de Raspberry Pi

Script zonder toonfrequentie:

Script met toonfrequentie

Script with melodies