Notes from Frequencies

You can use musical note frequencies in the chart below for the tone function’s f parameter to play music.

Example:

bot(22).tone(1975.5, 500)

This command plays a B6 note for half of a second.  Using this chart, you are able to create songs with the piezospeaker and the cyber:bot.

The notes to the first line of  the Happy Birthday song go in the following order: D – D – E – D – G – F.  Matching the notes with their frequencies, we can make the following program.

Example script: happy_birthday

This example script plays out the first line of “Happy Birthday.”

• Set the project’s name to happy_birthday, enter the script below, and then click Save.
• Click Send to micro:bit.
• Set PWR to 1.

# happy_birthday

from cyberbot import *

bot(22).tone(2349.3, 125)        #D for an eighth
bot(22).tone(2349.3,  62)        #D for a sixteenth
bot(22).tone(2637.0, 250)        #E for a quarter
bot(22).tone(2349.3, 250)        #C for a quarter
bot(22).tone(3136.0, 250)        #G for a quarter
bot(22).tone(2793.8, 500)        #F for a half

• Did you hear your cyber:bot play Happy Birthday?
• Set PWR to 0.