Introduction - If you have any usage issues, please Google them yourself
The microcontroller played a note by pin, periodic output of a specific frequency square wave. This requires microcontroller? Following widespread online MCU music playing program, many people are concerned about how to modify the content of the song, but I do not know how to start. Do pontificating on this software, some notes, and we want to help, that we will be able to write into the new music. In this procedure, including the two data tables which is stored in advance is quite good, and various note frequencies corresponding to the timing of the half cycle time initial value. With these data, the microcontroller can be played from the bass, midrange, treble, and ultra sound, four octaves of 28 notes.